82 FR 45705 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 189 (October 2, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 189 (October 2, 2017)
| Page Range | 45705-45710 | |
| FR Document | 2017-20831 |
[Federal Register Volume 82, Number 189 (Monday, October 2, 2017)] [Rules and Regulations] [Pages 45705-45710] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-20831] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2016-9522; Product Identifier 2016-NM-144-AD; Amendment 39-19065; AD 2017-20-08] RIN 2120-AA64 Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: We are superseding Airworthiness Directive (AD) 2009-17-01, which applied to certain Gulfstream Model G-IV, GIV-X, GV-SP airplanes and Model GV airplanes. AD 2009-17-01 required an inspection for sealant applied to the exterior of the auxiliary power unit (APU) enclosure (firewall), and a revision of the airplane flight manual (AFM), as applicable. This AD requires revising the AFM and revising the applicability to include additional airplanes. This AD was prompted by a report indicating that the type design sealant applied to the APU enclosure failed certain tests. We are issuing this AD to address the unsafe condition on these products. DATES: This AD is effective November 6, 2017. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of November 6, 2017. ADDRESSES: For service information identified in this final rule, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912-965-3520; email [email protected]; Internet http:// www.gulfstream.com/ [[Page 45706]] product_support/technical_pubs/pubs/index.htm. You may view this referenced service information at the FAA, Transport Standards Branch, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-9522. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016- 9522; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800-647- 5527) is Docket Management Facility, U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Ky Phan, Aerospace Engineer, Propulsion and Services Section, FAA, Atlanta ACO Branch, 1701 Columbia Avenue, College Park, GA 30337; phone: 404-474-5536; fax: 404-474-5606; email: [email protected]. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2009-17-01, Amendment 39-15991 (74 FR 40061, August 11, 2009) (``AD 2009-17-01''). AD 2009-17-01 applied to certain Gulfstream Model G-IV, GIV-X, GV-SP airplanes, and Model GV airplanes. The NPRM published in the Federal Register on January 4, 2017 (82 FR 737) (``the NPRM''). The NPRM was prompted by a report indicating that the type design sealant (Aerospace Material Specification (AMS) 3374), applied to the APU enclosure, does not meet the requirement in 14 CFR 25.1191(b)(1) for a firewall to be fireproof, and failed a certification test and a company test. The NPRM proposed to require revising the AFM and revising the applicability to include additional airplanes. We are issuing this AD to provide the flight crew with operating procedures for airplanes that have AMS 3374 or Gulfstream Material Specification (GMS) 4107 sealant applied to the APU enclosure (firewall). Under certain anomalous conditions such as an APU failure/ APU compartment fire, AMS 3374 or GMS 4107 sealant could ignite the exterior surfaces of the APU enclosure, and result in propagation of an uncontained fire to other critical areas of the airplane. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA's response to each comment. Request To Withdraw the NPRM Gulfstream requested that the NPRM be withdrawn. The commenter stated that the FAA's findings and decisions in the proposed AD are not based on analysis of the commenter's supporting data and accepted risk and safety assessment methodologies. The commenter asserted that its risk assessments, performed using the FAA's Transport Airplane Risk Assessment Methodology (TARAM) Handbook, are within the allowable guidelines of the FAA's TARAM Handbook. We do not agree with the commenter's request because this final rule is consistent with FAA policy and orders. The FAA's TARAM is used to assess risk associated with a wide variety of potential safety issues. The FAA typically follows the defined risk guidelines contained in the TARAM Handbook for transport category airplanes. However, occasionally, other factors affect the decision on whether to issue an AD. FAA Order 8110.107A, ``Monitor Safety/Analyze Data,'' paragraph 2- 10.e. states: In rare situations the Aviation Safety Engineer or FAA management may, based on factors unrelated to the risk analysis, make recommendations not consistent with risk guidelines for ADs or other mandatory corrective actions. The decision to accept or reject these recommendations is made during the CARB [Corrective Action Review Board]. One such factor, unrelated to risk analysis, is whether the affected system provides an emergency or safety function. Examples of emergency/safety systems include seatbelts, life rafts, oxygen systems, and firewalls. Failure of emergency systems typically do not cause an accident, but can greatly increase the probability of fatalities in the event of an additional unrelated failure. TARAM analyses of emergency/ safety systems typically indicate a low TARAM risk. This is due to the fact that the precipitating event is very rare, for example, high-g decelerations due to an accident, ditching, explosive decompression, and engine fire. Ultimately, the decision regarding whether to mandate airworthiness action for a condition is the responsibility of the FAA's CARB, which for this AD was comprised of representatives from the Atlanta ACO Branch, Transport Airplane Directorate, Atlanta MIDO Section, and the Aircraft Evaluation Group. The CARB unanimously concluded that factors other than the TARAM risk indicated the need to mandate corrective action for Gulfstream APU firewalls assembled using AMS 3374 sealant, in addition to the previously mandated requirements for Gulfstream APU firewalls assembled using GMS 4107 sealant. Several 14 CFR part 25 regulations are intended to prevent the spread of a fire to other critical areas of an airplane in the event of an in-flight or ground fire; one of these regulations is 14 CFR 25.1191 (``Firewalls''). The 14 CFR part 25 regulations include requirements for (1) fire detection, (2) fire suppression, and (3) fire containment by a firewall. The AMS 3374 sealant, as applied to the Gulfstream APU firewall type designs that are the subject of this AD, has been shown by fire testing to result in backside (cold side) ignition of the firewall when exposed to a 2,000 degree Fahrenheit flame for 15 minutes, thus violating the 14 CFR part 25 requirement for the firewall to be fireproof (refer to FAA Advisory Circular (AC) 20-135, ``Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards and Criteria,'' dated February 6, 1990 (``AC 20-135''), for firewall fire testing guidance.) Previous fire testing also confirmed that Gulfstream APU firewalls assembled with GMS 4107 exhibited backside ignition during those tests. The backside ignition of the Gulfstream APU firewalls occurred in an area of the airplane that does not have fire detection or fire suppression. This is a non-compliance with the requirements of 14 CFR 25.1191(b)(1) for firewalls to be fireproof. If an APU fire occurred in flight or on the ground on such a non-compliant airplane, it could result in backside ignition of the firewall, potentially resulting in propagation of an uncontained fire to other critical areas of the airplane. The area outside and adjacent to the Gulfstream APU firewall contains many airplane critical systems such as empennage structure, flight control components, fuel lines, and oil lines. The FAA finds that APU operations on the affected Gulfstream models without a firewall that is fireproof, as required by 14 CFR 25.1191, constitutes an unsafe condition. The FAA performed an [[Page 45707]] additional TARAM analysis, which indicated a higher risk than the results of the original Gulfstream TARAM analysis. However, we want to point out that neither TARAM analysis was the sole consideration for mandating corrective action. We have made no changes to this AD in this regard. Request for Separate AD Action for AMS 3374 Sealant Gulfstream requested that the FAA issue a separate rulemaking action to address the use of AMS 3374 sealant. The commenter deems it inaccurate to associate the GMS 4107 sealant unsafe condition with the application of the AMS 3374 sealant. Gulfstream also considers the corrective actions to be significantly different for the two types of sealants. We disagree with the commenter's request. Many of the Gulfstream airplanes affected by this AD have both GMS 4107 and AMS 3374 sealants used in the fabrication of APU firewalls. The use of GMS 4107 and/or AMS 3374 sealants, per the Gulfstream type design for the APU firewalls that are the subject of this AD action, has resulted in backside ignition of the APU firewall in fire tests that were intended to demonstrate that the firewalls are fireproof. The corrective action for both types of sealants is identical, applying restrictions on APU operations. The corrective actions specified in the AD being superseded, AD 2009-17-01, did not address APU firewalls fabricated using AMS 3374 sealant. Subsequent fire testing has shown that AMS 3374 sealant, used as specified in the Gulfstream type design, does not comply with the regulations that require a firewall to be fireproof; therefore, AD 2009-17-01 must be superseded to include APU firewalls fabricated using AMS 3374 sealant. Future rulemaking to incorporate a solution proposed by Gulfstream might be considered when and if a proposed solution is made available to the FAA. We have made no changes to this AD in this regard. Request To Clarify Terminology Gulfstream requested that the FAA revise the NPRM by removing all of the statements that AMS 3374 sealant is flammable. The commenter stated that it is not accurate to make a general statement that AMS 3374 sealant is flammable because there are many applications where AMS 3374 sealants are compliant with applicable fireproof certification requirements. We partially agree with the commenter's request. The FAA's certification requirement is that firewalls be fireproof, not that the sealant be fireproof. The FAA does not have specific requirements for sealant, apart from the requirement that its use in the assembly of firewalls must result in a fireproof firewall assembly. Also, the commenter's statement that there are many applications where AMS 3374 sealants are compliant with applicable fireproof certification requirements may be partially correct. There could be firewalls assembled using AMS 3374 sealants that do meet the applicable fireproof certification requirements. The issue addressed by this final rule is that Gulfstream's application of AMS 3374 sealant to the APU firewall assemblies affected by this rulemaking action is not compliant with the airworthiness requirement for the firewall to be fireproof. The AMS 3374 sealant does meet the requirements of an industry specification, the Society of Automotive Engineers (SAE) Standard AMS 3374. Compliance with an SAE standard is not equivalent to, and does not satisfy, compliance with the FAA certification requirement that firewalls be fireproof. AC 20-135 is used throughout the aviation industry as guidance material for how to show compliance with the FAA's requirement that firewalls be fireproof. Regarding the use of sealants, AC 20-135 provides the following guidance: Outgassing. A characteristic of bonded construction firewall materials and seal materials is the outgassing of the volatile constituents of the bonding resins or seal materials. This can occur from either the hot or cool side surface of the specimens during the test. These gasses are, in most instances, highly flammable. Ignition occurring on the cool side is unacceptable in passing the fire test. . . . For these types of construction, no ``cool side'' ignition is allowed and verification is required. There are many variables that determine if a given firewall configuration meets the airworthiness requirement to be fireproof. Sealants are known to outgas volatile constituents. In the case of the Gulfstream APU firewall type design, outgassed constituents of AMS 3374 sealant ignited on the backside during fire testing, and therefore, the firewall does not meet the definition of fireproof per AC 20-135. We have changed the wording in this final rule to specify that the type design sealant (AMS 3374), as applied in the Gulfstream APU firewall, does not meet the airworthiness requirement in 14 CFR 25.1191(b)(1), for a firewall to be fireproof. We do not agree that AMS 3374 sealant is compliant with applicable fireproof certification requirements because the FAA does not certificate sealants; the FAA certificates that firewalls are fireproof. Therefore, we have made no changes to this AD in this regard. Request To Revise the Estimated Costs of Compliance Gulfstream requested that the estimated costs of compliance in the NPRM be revised to include costs associated with an operator's inability to use the APU during normal operations, and the cost associated with a terminating action. The commenter noted that the estimated costs in the NPRM are associated with physically revising the AFM by inserting the applicable AFM supplement (AFMS). The commenter stated that the costs associated with a terminating action that would allow an operator to use its APU in flight is much more expensive, and depending on the number of airplanes that need to be retrofitted, the costs are likely to be tens of millions of dollars. The FAA did not include any costs associated with an operator's inability to use the APU during normal operations because APU usage is not required by the FAA for the operation of any of the affected aircraft. This final rule does allow APU usage during certain emergencies. We acknowledge that the costs associated with a terminating action, which would allow an operator to have use of its APU in flight, may be higher because the costs associated with retrofit of the airplane are likely to be higher than for implementing the change to the AFMS. This final rule only provides the costs associated with implementing the AFMS that restricts APU operations. There are no hardware or modification costs associated with this final rule. We do not agree with the commenter's request to revise the estimated costs of compliance. The FAA uses a standard labor rate of $85 per hour for evaluation of all airworthiness actions, regardless of who performs the corrective action. The only cost associated with this final rule is for revising the AFM by inserting the applicable AFMS. Therefore, we have made no changes to this final rule regarding this issue. Additional Change Made to This Final Rule The FAA no longer considers this final rule to be an ``interim action'' and reference to ``interim action,'' which was included in the NPRM, has been omitted from this final rule. The FAA will accept the AFMS restrictions on APU operation as terminating action. If Gulfstream proposes design changes that would eliminate the APU firewall unsafe condition addressed by this AD, [[Page 45708]] the FAA might consider further rulemaking. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this AD with the changes described previously, and minor editorial changes. We have determined that these minor changes:Are consistent with the intent that was proposed in the NPRM for correcting the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM. We also determined that these changes will not increase the economic burden on any operator or increase the scope of this AD. Related Service Information Under 1 CFR Part 51 We reviewed the following Gulfstream AFMSs. The AFMSs provide operating limitations on the use of the APU during certain ground and flight operations. These documents are distinct since they apply to different airplane models. Gulfstream GIV/G300/G400 AFM Supplement GIV-2016-01, dated July 27, 2016, to the Gulfstream GIV AFM, dated April 22, 1987; the Gulfstream G300 AFM, dated January 15, 2003; and the Gulfstream G400 AFM, dated November 18, 2002. Gulfstream G450/G350 AFM Supplement G450-2016-01, dated July 27, 2016, to the Gulfstream G450 AFM, dated August 12, 2004; and the Gulfstream G350 AFM, dated October 28, 2004. Gulfstream GV AFM Supplement GV-2016-01, dated July 27, 2016, to the Gulfstream GV AFM, dated April 11, 1997. Gulfstream G550/G500 AFM Supplement G550-2016-01, dated July 27, 2016, to the Gulfstream G550 AFM, dated August 14, 2003; and the Gulfstream G500 AFM, dated December 5, 2003. Gulfstream GVI (G650) AFM Supplement G650-2016-01, dated July 27, 2016, to the Gulfstream GVI (G650) AFM, dated September 7, 2012. Gulfstream GVI (G650ER) AFM Supplement G650ER-2016-03, dated July 27, 2016, to the Gulfstream GVI (G650ER) AFM, dated October 2, 2014. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. Costs of Compliance We estimate that this AD affects 1,220 airplanes of U.S. registry. We estimate the following costs to comply with this AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost per Cost on U.S. Action Labor cost Parts cost product operators ---------------------------------------------------------------------------------------------------------------- AFM revision....................... 1 work-hour x $85 per hour $0 $85 $103,700 = $85. ---------------------------------------------------------------------------------------------------------------- Authority for This Rulemaking Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. This AD is issued in accordance with authority delegated by the Executive Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to transport category airplanes to the Director of the System Oversight Division. Regulatory Findings We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ``significant regulatory action'' under Executive Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD) 2009-17-01, Amendment 39-15991 (74 FR 40061, August 11, 2009), and adding the following new AD: 2017-20-08 Gulfstream Aerospace Corporation: Amendment 39-19065; Docket No. FAA-2016-9522; Product Identifier 2016-NM-144-AD. (a) Effective Date This AD is effective November 6, 2017. (b) Affected ADs This AD replaces AD 2009-17-01, Amendment 39-15991 (74 FR 40061, August 11, 2009) (``AD 2009-17-01''). (c) Applicability This AD applies to the Gulfstream Aerospace Corporation airplanes, certificated [[Page 45709]] in any category, identified in paragraphs (c)(1) through (c)(5) of this AD. (1) Model G-IV airplanes, having serial numbers (S/Ns) 1000 and subsequent. (2) Model GIV-X airplanes, having S/Ns 4001 and subsequent. (3) Model GV airplanes, having S/Ns 501 and subsequent. (4) Model GV-SP airplanes, having S/Ns 5001 and subsequent. (5) Model GVI airplanes, having S/Ns 6001 and subsequent. (d) Subject Air Transport Association (ATA) of America Code 49, Airborne Auxiliary Power; and 53, Fuselage. (e) Unsafe Condition This AD was prompted by a report indicating that the type design sealant (Aerospace Material Specification (AMS) 3374), as applied to the auxiliary power unit (APU) enclosure (firewall), does not meet the requirement in 14 CFR 25.1191(b)(1) for a firewall to be fireproof, and failed a certification test and a company test. We are issuing this AD to provide the flight crew with operating procedures for airplanes that have AMS 3374 or Gulfstream Material Specification (GMS) 4107 sealant applied to the APU enclosure. Under certain anomalous conditions such as an APU failure/APU compartment fire, AMS 3374 or GMS 4107 sealant could ignite the exterior surfaces of the APU enclosure and result in propagation of an uncontained fire to other critical areas of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Airplane Flight Manual (AFM) Revision Within 30 days after the effective date of this AD, revise the Limitations Section of the applicable Gulfstream AFM specified in paragraphs (h)(1) through (h)(6) of this AD to include the information in the applicable Gulfstream AFM supplement (AFMS) specified in paragraphs (h)(1) through (h)(6) of this AD. These AFMSs introduce operating limitations on the use of the APU during certain ground and flight operations. This AFM revision may be done by inserting a copy of the applicable AFMS into the applicable AFM specified in paragraphs (h)(1) through (h)(6) of this AD. When the AFMS has been included in the general revision of the AFM, the general revision may be inserted into the AFM, provided the relevant information in the general revision is identical to that in the applicable AFMS specified in paragraphs (h)(1) through (h)(6) of this AD. (h) AFMSs For the AFM revision required by paragraph (g) of this AD, insert the applicable AFMS into the applicable Gulfstream AFM identified in paragraphs (h)(1) through (h)(6) of this AD. (1) Gulfstream GIV/G300/G400 AFM Supplement GIV-2016-01, dated July 27, 2016, to the Gulfstream GIV AFM, dated April 22, 1987; the Gulfstream G300 AFM, dated January 15, 2003; and the Gulfstream G400 AFM, dated November 18, 2002. (2) Gulfstream G450/G350 AFM Supplement G450-2016-01, dated July 27, 2016, to the Gulfstream G450 AFM, dated August 12, 2004; and the Gulfstream G350 AFM, dated October 28, 2004. (3) Gulfstream GV AFM Supplement GV-2016-01, dated July 27, 2016, to the Gulfstream GV AFM, dated April 11, 1997. (4) Gulfstream G550/G500 AFM Supplement G550-2016-01, dated July 27, 2016, to the Gulfstream G550 AFM, dated August 14, 2003; and the Gulfstream G500 AFM, dated December 5, 2003. (5) Gulfstream GVI (G650) AFM Supplement G650-2016-01, dated July 27, 2016, to the Gulfstream GVI (G650) AFM, dated September 7, 2012. (6) Gulfstream GVI (G650ER) AFM Supplement G650ER-2016-03, dated July 27, 2016, to the Gulfstream GVI (G650ER) AFM, dated October 2, 2014. (i) Credit for Previous Actions This paragraph provides credit for the action required by paragraph (g) of this AD, if that action was performed before the effective date of this AD using the applicable service information specified in paragraphs (i)(1) through (i)(4) of this AD. This service information was incorporated by reference in AD 2009-17-01. (1) Gulfstream G-IV/G300/G400 AFM Supplement G-IV-2009-02, Revision 1, dated June 25, 2009, to the Gulfstream GIV AFM, the Gulfstream G300 AFM, and the Gulfstream G400 AFM. (2) Gulfstream G450/G350 AFM Supplement G450-2009-03, Revision 1, dated June 25, 2009, to the Gulfstream G450 AFM and the Gulfstream G350 AFM. (3) Gulfstream GV AFM Supplement GV-2009-03, Revision 1, dated June 25, 2009, to the Gulfstream GV AFM. (4) Gulfstream G550/G500 AFM Supplement G550-2009-03, Revision 1, dated June 25, 2009, Gulfstream G550 AFM and the Gulfstream G500 AFM. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Atlanta ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (k)(1) of this AD. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (3) AMOCs approved previously for paragraph (h) of AD 2009-17-01 are approved as AMOCs for the corresponding provisions of paragraph (g) of this AD. (k) Related Information (1) For more information about this AD, contact Ky Phan, Aerospace Engineer, Propulsion and Services Section, FAA, Atlanta ACO Branch, 1701 Columbia Avenue, College Park, GA 30337; phone: 404-474-5536; fax: 404-474-5606; email: [email protected]. (2) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (l)(3) and (l)(4) of this AD. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Gulfstream GIV/G300/G400 Airplane Flight Manual (AFM) Supplement GIV-2016-01, dated July 27, 2016, to the Gulfstream GIV AFM, dated April 22, 1987; the Gulfstream G300 AFM, dated January 15, 2003; and the Gulfstream G400 AFM, dated November 18, 2002. (ii) Gulfstream G450/G350 Airplane Flight Manual (AFM) Supplement G450-2016-01, dated July 27, 2016, to the Gulfstream G450 AFM, dated August 12, 2004; and the Gulfstream G350 AFM, dated October 28, 2004. (iii) Gulfstream GV Airplane Flight Manual (AFM) Supplement GV- 2016-01, dated July 27, 2016, to the Gulfstream GV AFM, dated April 11, 1997. (iv) Gulfstream G550/G500 Airplane Flight Manual (AFM) Supplement G550-2016-01, dated July 27, 2016, to the Gulfstream G550 AFM, dated August 14, 2003; and the Gulfstream G500 AFM, dated December 5, 2003. (v) Gulfstream GVI (G650) Airplane Flight Manual (AFM) Supplement G650-2016-01, dated July 27, 2016, to the Gulfstream GVI (G650) AFM, dated September 7, 2012. (vi) Gulfstream GVI (G650ER) Airplane Flight Manual (AFM) Supplement G650ER-2016-03, dated July 27, 2016, to the Gulfstream GVI (G650ER) AFM, dated October 2, 2014. (3) For service information identified in this AD, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912- 965-3520; email [email protected]; Internet http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm. (4) You may view this service information at the FAA, Transport Standards Branch, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. [[Page 45710]] Issued in Renton, Washington, on September 18, 2017. Dionne Palermo, Acting Director, System Oversight Division, Aircraft Certification Service. [FR Doc. 2017-20831 Filed 9-29-17; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 82, No. 189 / Monday, October 2, 2017 / Rules and Regulations 45705
Adoption of the Amendment (i) Other FAA AD Provisions 1601 Lind Avenue SW., Renton, WA. For
The following provisions also apply to this information on the availability of this
Accordingly, under the authority material at the FAA, call 425–227–1221.
AD:
delegated to me by the Administrator, (5) You may view this service information
(1) Alternative Methods of Compliance
the FAA amends 14 CFR part 39 as (AMOCs): The Manager, New York ACO that is incorporated by reference at the
follows: Branch, FAA, has the authority to approve National Archives and Records
AMOCs for this AD, if requested using the Administration (NARA). For information on
PART 39—AIRWORTHINESS procedures found in 14 CFR 39.19. In the availability of this material at NARA, call
DIRECTIVES accordance with 14 CFR 39.19, send your 202–741–6030, or go to: http://
request to your principal inspector or local www.archives.gov/federal-register/cfr/ibr-
■ 1. The authority citation for part 39 Flight Standards District Office, as locations.html.
continues to read as follows: appropriate. If sending information directly Issued in Renton, Washington, on
to the manager of the certification office, September 20, 2017.
Authority: 49 U.S.C. 106(g), 40113, 44701.
send it to ATTN: Program Manager,
Dionne Palermo,
§ 39.13 [Amended] Continuing Operational Safety, FAA, New
York ACO Branch, 1600 Stewart Avenue, Acting Director, System Oversight Division,
■ 2. The FAA amends § 39.13 by adding Suite 410, Westbury, NY 11590; telephone Aircraft Certification Service.
the following new airworthiness 516–228–7300; fax 516–794–5531. Before [FR Doc. 2017–20824 Filed 9–29–17; 8:45 am]
directive (AD): using any approved AMOC, notify your BILLING CODE 4910–13–P
appropriate principal inspector, or lacking a
2017–20–07 Bombardier, Inc.: Amendment principal inspector, the manager of the local
39–19064; Docket No. FAA–2017–0518; flight standards district office/certificate
Product Identifier 2016–NM–167–AD. DEPARTMENT OF TRANSPORTATION
holding district office.
(a) Effective Date (2) Contacting the Manufacturer: For any Federal Aviation Administration
requirement in this AD to obtain corrective
This AD is effective November 6, 2017.
actions from a manufacturer, the action must
(b) Affected ADs be accomplished using a method approved 14 CFR Part 39
None. by the Manager, New York ACO Branch, [Docket No. FAA–2016–9522; Product
FAA; or Transport Canada Civil Aviation Identifier 2016–NM–144–AD; Amendment
(c) Applicability (TCCA); or Bombardier, Inc.’s TCCA Design 39–19065; AD 2017–20–08]
This AD applies to Bombardier, Inc., Approval Organization (DAO). If approved by
Model DHC–8–400, –401, and –402 the DAO, the approval must include the RIN 2120–AA64
airplanes, certificated in any category, serial DAO-authorized signature.
numbers 4001, and 4003 through 4504 Airworthiness Directives; Gulfstream
(j) Related Information
inclusive. Aerospace Corporation Airplanes
(1) Refer to Mandatory Continuing
(d) Subject Airworthiness Information (MCAI) Canadian AGENCY: Federal Aviation
Air Transport Association (ATA) of Airworthiness Directive CF–2016–25, dated Administration (FAA), DOT.
America Code 26, Fire protection. August 22, 2016, for related information. ACTION: Final rule.
This MCAI may be found in the AD docket
(e) Reason on the Internet at http://www.regulations.gov SUMMARY: We are superseding
This AD was prompted by the failure of the by searching for and locating Docket No. Airworthiness Directive (AD) 2009–17–
fire control amplifier (FCA), which was likely FAA–2017–0518. 01, which applied to certain Gulfstream
caused by an electrical short in a discharged (2) For more information about this AD,
Model G–IV, GIV–X, GV–SP airplanes
squib for a fire extinguishing bottle. We are contact Assata Dessaline, Aerospace
Engineer, Avionics and Administrative and Model GV airplanes. AD 2009–17–
issuing this AD to prevent failure of the FCA
Services Section, FAA, New York ACO 01 required an inspection for sealant
and subsequent discharge of fire
extinguishing bottles and false fire Branch, 1600 Stewart Avenue, Suite 410, applied to the exterior of the auxiliary
indications, leaving the flight crew with Westbury, NY 11590; telephone 516–228– power unit (APU) enclosure (firewall),
reduced firefighting capability in the event of 7301; fax 516–794–5531. and a revision of the airplane flight
a fire. (3) Service information identified in this manual (AFM), as applicable. This AD
AD that is not incorporated by reference is requires revising the AFM and revising
(f) Compliance available at the addresses specified in the applicability to include additional
Comply with this AD within the paragraphs (k)(3) and (k)(4) of this AD.
airplanes. This AD was prompted by a
compliance times specified, unless already (k) Material Incorporated by Reference report indicating that the type design
done.
(1) The Director of the Federal Register sealant applied to the APU enclosure
(g) Replacement of Affected Circuit Breakers approved the incorporation by reference failed certain tests. We are issuing this
Within 6,000 flight hours or 3 years, (IBR) of the service information listed in this AD to address the unsafe condition on
whichever occurs first, after the effective date paragraph under 5 U.S.C. 552(a) and 1 CFR these products.
of this AD: Replace the 7.5-amp circuit part 51. DATES: This AD is effective November 6,
breakers specified in Bombardier Service (2) You must use this service information
as applicable to do the actions required by
2017.
Bulletin 84–26–16, Revision A, dated
this AD, unless this AD specifies otherwise. The Director of the Federal Register
February 12, 2016, with 1-amp circuit
breakers having part number MS3320–1, in (i) Bombardier Service Bulletin 84–26–16, approved the incorporation by reference
accordance with the Accomplishment Revision A, dated February 12, 2016. of certain publications listed in this AD
Instructions of Bombardier Service Bulletin (ii) Reserved. as of November 6, 2017.
84–26–16, Revision A, dated February 12, (3) For service information identified in ADDRESSES: For service information
jstallworth on DSKBBY8HB2PROD with RULES
2016. this AD, contact Bombardier, Inc., Q-Series identified in this final rule, contact
Technical Help Desk, 123 Garratt Boulevard,
(h) Credit for Previous Actions Gulfstream Aerospace Corporation,
Toronto, Ontario M3K 1Y5, Canada;
This paragraph provides credit for actions telephone 416–375–4000; fax 416–375–4539; Technical Publications Dept., P.O. Box
required by paragraph (g) of this AD, if those email thd.qseries@aero.bombardier.com; 2206, Savannah, GA 31402–2206;
actions were performed before the effective Internet http://www.bombardier.com. telephone 800–810–4853; fax 912–965–
date of this AD using Bombardier Service (4) You may view this service information 3520; email pubs@gulfstream.com;
Bulletin 84–26–16, dated August 14, 2015. at the FAA, Transport Standards Branch, Internet http://www.gulfstream.com/
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product_support/technical_pubs/pubs/ anomalous conditions such as an APU whether to mandate airworthiness
index.htm. You may view this failure/APU compartment fire, AMS action for a condition is the
referenced service information at the 3374 or GMS 4107 sealant could ignite responsibility of the FAA’s CARB,
FAA, Transport Standards Branch, 1601 the exterior surfaces of the APU which for this AD was comprised of
Lind Avenue SW., Renton, WA. For enclosure, and result in propagation of representatives from the Atlanta ACO
information on the availability of this an uncontained fire to other critical Branch, Transport Airplane Directorate,
material at the FAA, call 425–227–1221. areas of the airplane. Atlanta MIDO Section, and the Aircraft
It is also available on the Internet at Comments Evaluation Group. The CARB
http://www.regulations.gov by searching unanimously concluded that factors
for and locating Docket No. FAA–2016– We gave the public the opportunity to other than the TARAM risk indicated
9522. participate in developing this AD. The the need to mandate corrective action
following presents the comments for Gulfstream APU firewalls assembled
Examining the AD Docket received on the NPRM and the FAA’s using AMS 3374 sealant, in addition to
You may examine the AD docket on response to each comment. the previously mandated requirements
the Internet at http:// Request To Withdraw the NPRM for Gulfstream APU firewalls assembled
www.regulations.gov by searching for using GMS 4107 sealant.
and locating Docket No. FAA–2016– Gulfstream requested that the NPRM
be withdrawn. The commenter stated Several 14 CFR part 25 regulations are
9522; or in person at the Docket intended to prevent the spread of a fire
Management Facility between 9 a.m. that the FAA’s findings and decisions in
the proposed AD are not based on to other critical areas of an airplane in
and 5 p.m., Monday through Friday, the event of an in-flight or ground fire;
except Federal holidays. The AD docket analysis of the commenter’s supporting
data and accepted risk and safety one of these regulations is 14 CFR
contains this AD, the regulatory 25.1191 (‘‘Firewalls’’). The 14 CFR part
evaluation, any comments received, and assessment methodologies. The
commenter asserted that its risk 25 regulations include requirements for
other information. The address for the (1) fire detection, (2) fire suppression,
Docket Office (phone: 800–647–5527) is assessments, performed using the FAA’s
Transport Airplane Risk Assessment and (3) fire containment by a firewall.
Docket Management Facility, U.S. The AMS 3374 sealant, as applied to the
Department of Transportation, Docket Methodology (TARAM) Handbook, are
within the allowable guidelines of the Gulfstream APU firewall type designs
Operations, M–30, West Building that are the subject of this AD, has been
Ground Floor, Room W12–140, 1200 FAA’s TARAM Handbook.
We do not agree with the commenter’s shown by fire testing to result in
New Jersey Avenue SE., Washington, backside (cold side) ignition of the
request because this final rule is
DC 20590. firewall when exposed to a 2,000 degree
consistent with FAA policy and orders.
FOR FURTHER INFORMATION CONTACT: Ky The FAA’s TARAM is used to assess Fahrenheit flame for 15 minutes, thus
Phan, Aerospace Engineer, Propulsion risk associated with a wide variety of violating the 14 CFR part 25
and Services Section, FAA, Atlanta potential safety issues. The FAA requirement for the firewall to be
ACO Branch, 1701 Columbia Avenue, typically follows the defined risk fireproof (refer to FAA Advisory
College Park, GA 30337; phone: 404– guidelines contained in the TARAM Circular (AC) 20–135, ‘‘Powerplant
474–5536; fax: 404–474–5606; email: Handbook for transport category Installation and Propulsion System
ky.phan@faa.gov. airplanes. However, occasionally, other Component Fire Protection Test
SUPPLEMENTARY INFORMATION: factors affect the decision on whether to Methods, Standards and Criteria,’’ dated
issue an AD. FAA Order 8110.107A, February 6, 1990 (‘‘AC 20–135’’), for
Discussion firewall fire testing guidance.) Previous
‘‘Monitor Safety/Analyze Data,’’
We issued a notice of proposed paragraph 2–10.e. states: fire testing also confirmed that
rulemaking (NPRM) to amend 14 CFR Gulfstream APU firewalls assembled
In rare situations the Aviation Safety
part 39 to supersede AD 2009–17–01, Engineer or FAA management may, based on
with GMS 4107 exhibited backside
Amendment 39–15991 (74 FR 40061, factors unrelated to the risk analysis, make ignition during those tests. The backside
August 11, 2009) (‘‘AD 2009–17–01’’). recommendations not consistent with risk ignition of the Gulfstream APU firewalls
AD 2009–17–01 applied to certain guidelines for ADs or other mandatory occurred in an area of the airplane that
Gulfstream Model G–IV, GIV–X, GV–SP corrective actions. The decision to accept or does not have fire detection or fire
airplanes, and Model GV airplanes. The reject these recommendations is made during suppression. This is a non-compliance
NPRM published in the Federal the CARB [Corrective Action Review Board]. with the requirements of 14 CFR
Register on January 4, 2017 (82 FR 737) One such factor, unrelated to risk 25.1191(b)(1) for firewalls to be
(‘‘the NPRM’’). The NPRM was analysis, is whether the affected system fireproof. If an APU fire occurred in
prompted by a report indicating that the provides an emergency or safety flight or on the ground on such a non-
type design sealant (Aerospace Material function. Examples of emergency/safety compliant airplane, it could result in
Specification (AMS) 3374), applied to systems include seatbelts, life rafts, backside ignition of the firewall,
the APU enclosure, does not meet the oxygen systems, and firewalls. Failure potentially resulting in propagation of
requirement in 14 CFR 25.1191(b)(1) for of emergency systems typically do not an uncontained fire to other critical
a firewall to be fireproof, and failed a cause an accident, but can greatly areas of the airplane. The area outside
certification test and a company test. increase the probability of fatalities in and adjacent to the Gulfstream APU
The NPRM proposed to require revising the event of an additional unrelated firewall contains many airplane critical
the AFM and revising the applicability failure. TARAM analyses of emergency/ systems such as empennage structure,
jstallworth on DSKBBY8HB2PROD with RULES
to include additional airplanes. We are safety systems typically indicate a low flight control components, fuel lines,
issuing this AD to provide the flight TARAM risk. This is due to the fact that and oil lines. The FAA finds that APU
crew with operating procedures for the precipitating event is very rare, for operations on the affected Gulfstream
airplanes that have AMS 3374 or example, high-g decelerations due to an models without a firewall that is
Gulfstream Material Specification accident, ditching, explosive fireproof, as required by 14 CFR
(GMS) 4107 sealant applied to the APU decompression, and engine fire. 25.1191, constitutes an unsafe
enclosure (firewall). Under certain Ultimately, the decision regarding condition. The FAA performed an
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the FAA might consider further operating limitations on the use of the dated August 14, 2003; and the
rulemaking. APU during certain ground and flight Gulfstream G500 AFM, dated December
operations. These documents are 5, 2003.
Conclusion
distinct since they apply to different • Gulfstream GVI (G650) AFM
We reviewed the relevant data, airplane models.
considered the comments received, and Supplement G650–2016–01, dated July
• Gulfstream GIV/G300/G400 AFM 27, 2016, to the Gulfstream GVI (G650)
determined that air safety and the Supplement GIV–2016–01, dated July
public interest require adopting this AD AFM, dated September 7, 2012.
27, 2016, to the Gulfstream GIV AFM,
with the changes described previously, dated April 22, 1987; the Gulfstream • Gulfstream GVI (G650ER) AFM
and minor editorial changes. We have G300 AFM, dated January 15, 2003; and Supplement G650ER–2016–03, dated
determined that these minor changes: the Gulfstream G400 AFM, dated July 27, 2016, to the Gulfstream GVI
• Are consistent with the intent that November 18, 2002. (G650ER) AFM, dated October 2, 2014.
was proposed in the NPRM for
• Gulfstream G450/G350 AFM This service information is reasonably
correcting the unsafe condition; and
Supplement G450–2016–01, dated July
• Do not add any additional burden available because the interested parties
upon the public than was already 27, 2016, to the Gulfstream G450 AFM, have access to it through their normal
proposed in the NPRM. dated August 12, 2004; and the course of business or by the means
We also determined that these Gulfstream G350 AFM, dated October identified in the ADDRESSES section.
changes will not increase the economic 28, 2004.
burden on any operator or increase the • Gulfstream GV AFM Supplement Costs of Compliance
scope of this AD. GV–2016–01, dated July 27, 2016, to the
Gulfstream GV AFM, dated April 11, We estimate that this AD affects 1,220
Related Service Information Under 1 1997. airplanes of U.S. registry. We estimate
CFR Part 51 • Gulfstream G550/G500 AFM the following costs to comply with this
We reviewed the following Supplement G550–2016–01, dated July AD:
Gulfstream AFMSs. The AFMSs provide 27, 2016, to the Gulfstream G550 AFM,
ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
AFM revision ........................... 1 work-hour × $85 per hour = $85 ......................................... $0 $85 $103,700
Authority for This Rulemaking applicable to transport category Adoption of the Amendment
Title 49 of the United States Code airplanes to the Director of the System
Oversight Division. Accordingly, under the authority
specifies the FAA’s authority to issue delegated to me by the Administrator,
rules on aviation safety. Subtitle I, Regulatory Findings the FAA amends 14 CFR part 39 as
Section 106, describes the authority of follows:
the FAA Administrator. Subtitle VII, We have determined that this AD will
Aviation Programs, describes in more not have federalism implications under PART 39—AIRWORTHINESS
detail the scope of the Agency’s Executive Order 13132. This AD will DIRECTIVES
authority. not have a substantial direct effect on
We are issuing this rulemaking under the States, on the relationship between ■ 1. The authority citation for part 39
the authority described in Subtitle VII, the national government and the States, continues to read as follows:
Part A, Subpart III, Section 44701, or on the distribution of power and
responsibilities among the various Authority: 49 U.S.C. 106(g), 40113, 44701.
‘‘General requirements.’’ Under that
section, Congress charges the FAA with levels of government. § 39.13 [Amended]
promoting safe flight of civil aircraft in For the reasons discussed above, I
certify that this AD: ■ 2. The FAA amends § 39.13 by
air commerce by prescribing regulations
removing Airworthiness Directive (AD)
for practices, methods, and procedures (1) Is not a ‘‘significant regulatory 2009–17–01, Amendment 39–15991 (74
the Administrator finds necessary for action’’ under Executive Order 12866, FR 40061, August 11, 2009), and adding
safety in air commerce. This regulation (2) Is not a ‘‘significant rule’’ under the following new AD:
is within the scope of that authority DOT Regulatory Policies and Procedures
because it addresses an unsafe condition 2017–20–08 Gulfstream Aerospace
(44 FR 11034, February 26, 1979), Corporation: Amendment 39–19065;
that is likely to exist or develop on
products identified in this rulemaking (3) Will not affect intrastate aviation Docket No. FAA–2016–9522; Product
in Alaska, and Identifier 2016–NM–144–AD.
action.
This AD is issued in accordance with (4) Will not have a significant (a) Effective Date
authority delegated by the Executive economic impact, positive or negative, This AD is effective November 6, 2017.
Director, Aircraft Certification Service, on a substantial number of small entities
jstallworth on DSKBBY8HB2PROD with RULES
under the criteria of the Regulatory (b) Affected ADs
as authorized by FAA Order 8000.51C.
In accordance with that order, issuance Flexibility Act. This AD replaces AD 2009–17–01,
of ADs is normally a function of the Amendment 39–15991 (74 FR 40061, August
List of Subjects in 14 CFR Part 39 11, 2009) (‘‘AD 2009–17–01’’).
Compliance and Airworthiness
Division, but during this transition Air transportation, Aircraft, Aviation (c) Applicability
period, the Executive Director has safety, Incorporation by reference, This AD applies to the Gulfstream
delegated the authority to issue ADs Safety. Aerospace Corporation airplanes, certificated
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![45710 Federal Register / Vol. 82, No. 189 / Monday, October 2, 2017 / Rules and Regulations
Issued in Renton, Washington, on for and locating Docket No. FAA–2017– Comments
September 18, 2017. 0099. We gave the public the opportunity to
Dionne Palermo,
Examining the AD Docket participate in developing this AD. We
Acting Director, System Oversight Division, considered the comments received.
Aircraft Certification Service. You may examine the AD docket on
[FR Doc. 2017–20831 Filed 9–29–17; 8:45 am] Comment on Certifying Authority
the Internet at http://
BILLING CODE 4910–13–P www.regulations.gov by searching for The European Aviation Safety Agency
and locating Docket No. FAA–2017– (EASA) commented that the affected
0099; or in person at the Docket smoke detectors were approved by
DEPARTMENT OF TRANSPORTATION Management Facility between 9 a.m. EASA rather than by France.
and 5 p.m., Monday through Friday, We agree. These smoke detectors were
Federal Aviation Administration approved by EASA. We did not change
except Federal holidays. The AD docket
contains this AD, the mandatory this AD because this AD does not
14 CFR Part 39 reference the certifying authority for
continuing airworthiness information
[Docket No. FAA–2017–0099; Product (MCAI), the regulatory evaluation, any these smoke detectors. The section
Identifier 2017–NE–02–AD; Amendment 39– comments received, and other commented on by EASA exists only in
19035; AD 2017–19–05] information. The address for the Docket the ‘‘Determination and Requirements of
Office (phone: 800–647–5527) is This Proposed AD’’ section of the
RIN 2120–AA64
Document Management Facility, U.S. NPRM. We did not change this AD.
Airworthiness Directives; Siemens Department of Transportation, Docket Request To Revise Applicability
S.A.S. Smoke Detectors Operations, M–30, West Building
Delta Air Lines (Delta) requested that
Ground Floor, Room W12–140, 1200
Republication we revise the Applicability section of
New Jersey Avenue SE., Washington,
this AD to remove the reference to the
Editorial Note: Rule document 2017– DC 20590.
date range when certain affected smoke
20425 was originally published on pages FOR FURTHER INFORMATION CONTACT: Erin detectors were produced. Delta
44717 through 44720 in the issue of Tuesday, Hulverson, Aerospace Engineer, FAA, indicated that the NPRM may be
September 26, 2017. In that publication, on
Boston ACO Branch, Compliance and interpreted as implying that there are
page 44719, in Figure 1, a number was
omitted from the first entry under column Airworthiness Division, 1200 District more affected smoke detector serial
‘‘P/N’’. Also in that publication, on page Avenue, Burlington, MA 01803; phone: numbers than those identified in
44720, in Figure 3, a number was omitted 781–238–7655; fax: 781–238–7199; paragraph 1/D/ of Siemens Service
from the table heading. The corrected email: erin.hulverson@faa.gov. Information Letter (SIL) PMC–26–002,
document is published here in its entirety. Revision No. 1, dated January 2016, and
SUPPLEMENTARY INFORMATION:
AGENCY: Federal Aviation of SIL PMC–26–003, Revision No. 2,
Administration (FAA), DOT. Discussion dated February, 2016. Delta commented
that removing the date range from the
ACTION: Final rule. We issued a notice of proposed Applicability section of this AD would
SUMMARY: We are adopting a new rulemaking (NPRM) to amend 14 CFR clarify applicability for operators.
airworthiness directive (AD) for certain part 39 by adding an AD that would We agree. We find that providing the
Siemens S.A.S. smoke detectors apply to the specified products. The part numbers (P/Ns) and serial numbers
installed on various transport category NPRM was published in the Federal (S/Ns) for the affected smoke detectors
airplanes. This AD requires inspection Register on April 20, 2017 (82 FR sufficiently identifies all affected
and replacement of the affected smoke 18588). The NPRM proposed to correct detectors. We revised this AD by
detectors. This AD was prompted by a an unsafe condition for the specified removing the reference to the
report that the affected smoke detectors products. The MCAI states: production date range from the
failed an acceptance test. We are issuing During a maintenance operation, some Applicability section of this AD.
this AD to correct the unsafe condition smoke detectors P/N PMC1102–02 failed an Request To Revise Compliance
on these products. acceptance test, due to a significant degraded
optical sensitivity. Investigation results
Schedule
DATES: This AD becomes effective
concluded that light-emitting diodes (LED) Delta requested that we revise
October 31, 2017. were abnormally degraded, affecting specific paragraph (f)(2) in the compliance
The Director of the Federal Register batches where changes occurred in the LED section of this AD to indicate that
approved the incorporation by reference manufacturer production process. Further repaired units identified in Figure (1) to
of certain publications listed in this AD investigation has determined that the affected paragraph (c) of this AD should be
as of October 31, 2017. LED have been installed on smoke detectors replaced within 5 months after the
ADDRESSES: For service information manufactured between November 2010 and
effective date of this AD. Delta
identified in this final rule, contact January 2013, and on certain repaired units.
This condition, if not corrected, will
commented that the NPRM does not
Siemens, Aviation Customer Support, specify when these affected detectors
697 Rue Fourny, 78530 Buc, France; generate an abnormal ageing of the smoke
detector, leading to a decrease of the light are to be replaced.
phone: (33) 1 3084 6650; fax: (33) 1 3956 intensity capability, possibly resulting in We agree. We revised the compliance
1364. You may view this service failure to detect smoke and consequent risk section of this AD to specify that smoke
information at the FAA, Engine and of an on-board uncontrolled fire. detectors identified in paragraph (c)(2)
jstallworth on DSKBBY8HB2PROD with RULES
Propeller Standards Branch, Policy and of this AD must be replaced within 5
Innovation Division, 1200 District You may obtain further information months after the effective date of this
Avenue, Burlington, MA. For by examining the MCAI in the AD AD.
information on the availability of this docket on the Internet at http://
material at the FAA, call 781- 238–7125. www.regulations.gov by searching for Support for This AD
It is also available on the Internet at and locating Docket No. FAA–2017– The Air Line Pilots Association,
http://www.regulations.gov by searching 0099. International, commented that it
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Document Created: 2017-09-30 04:41:30
Document Modified: 2017-09-30 04:41:30
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Rules and Regulations | |
| Action | Final rule. | |
| Dates | This AD is effective November 6, 2017. | |
| Contact | Ky Phan, Aerospace Engineer, Propulsion and Services Section, FAA, Atlanta ACO Branch, 1701 Columbia Avenue, College Park, GA 30337; phone: 404-474-5536; fax: 404-474-5606; email: [email protected] | |
| FR Citation | 82 FR 45705 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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