80 FR 78699 - Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 242 (December 17, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 242 (December 17, 2015)
| Page Range | 78699-78701 | |
| FR Document | 2015-30560 |
[Federal Register Volume 80, Number 242 (Thursday, December 17, 2015)] [Proposed Rules] [Pages 78699-78701] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-30560] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-6544; Directorate Identifier 2014-NM-198-AD] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to supersede Airworthiness Directive (AD) 2012-24- 06 for certain Saab AB, Saab Aeronautics (formerly known as Saab AB, Saab Aerosystems) Model 340A (SAAB/SF340A) and SAAB 340B airplanes. AD 2012-24-06 requires replacing the stall warning computer (SWC) with a new SWC, which provides an artificial stall warning in icing conditions, and modifying the airplane for the replacement of the SWC. Since we issued AD 2012-24-06, a determination was made that airplanes with certain modifications were excluded from the AD applicability and are affected by the identified unsafe condition and the SWC required by AD 2012-24-06 contained erroneous logic. This proposed AD would add airplanes to the applicability, and would add requirements to replace the existing SWCs with new, improved SWCs and modify the airplane for the new replacement of the SWC. We are proposing this AD to prevent natural stall events during operation in icing conditions, which could result in loss of control of the airplane. DATES: We must receive comments on this proposed AD by February 1, 2016. ADDRESSES: You may send comments by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. Fax: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed rule, contact Saab AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone +46 13 18 5591; fax +46 13 18 4874; email saab2000.techsupport@saabgroup.com; Internet http://www.saabgroup.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. 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-2015- 6544; 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112; fax 425-227-1149. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2015-6544; Directorate Identifier 2014-NM-198-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion On November 21, 2012, we issued AD 2012-24-06, Amendment 39-17276 (77 FR 73279, December 10, 2012). AD 2012-24-06 applies to certain Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. AD 2012-24-06 was prompted by reports of stall events during icing conditions where the natural stall warning (buffet) was not identified. AD 2012-24-06 requires replacing the stall warning computer (SWC) with a new SWC, which provides an artificial stall warning in icing conditions, and modifying the airplane for the replacement of the SWC. We issued AD 2012-24-06 to prevent natural stall events during operation in icing conditions, which, if not corrected, could result in loss of control of the airplane. Airplanes with certain modifications were excluded from the applicability of AD 2012-24-06, Amendment 39-17276 (77 FR 73279, December 10, 2012). Since we issued AD 2012-24-06, we have determined that those modifications for airplanes identified in the applicability of AD 2012-24-06 are now subject to the identified unsafe [[Page 78700]] condition. In addition, a new, improved SWC has been designed to replace the existing SWC, as well as the SWC required by AD 2012-24-06. The installation of the new SWC includes modifying the airplane. The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Union, has issued EASA Airworthiness Directive 2014-0218, dated September 29, 2014 (referred to after this as the Mandatory Continuing Airworthiness Information, or ``the MCAI''), to correct an unsafe condition for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) and SAAB 340B airplanes. The MCAI states: A few natural stall events, specifically when operating in icing conditions, have been experienced on SAAB 340 series aeroplanes, without receiving a prior stall warning. This condition, if not corrected, could result in loss of control of the aeroplane. To address this potential unsafe condition, SAAB developed a modified stall warning system, incorporating improved stall warning logic, and issued Service Bulletin (SB) 340-27-098 and SB 340-27- 099, providing instructions to replace the Stall Warning Computer (SWC) with a new SWC, and instructions to activate the new SWC. The new system included stall warning curves optimized for operation in icing conditions, which are activated by selection of Engine Anti- Ice. Consequently, EASA issued AD 2011-0219 [http://ad.easa.europa.eu/ad/2011-0219, which corresponds to FAA AD 2012-24- 06, Amendment 39-17276 (77 FR 73279, December 10, 2012)] to require installation of the improved SWC. After that [EASA] AD was issued, in-service experience with the improved stall warning system revealed cases of premature stall warning activation during the take-off phase. In numerous recorded cases, the onset of stall warning occurred without the 6 minute delay after weight off wheels. This condition, if not corrected, could lead to premature stick shaker activation and consequent increase in pilot workload during the take-off phase, possibly resulting in reduced control of the aeroplane. To correct this unsafe condition, EASA issued AD 2013-0254 [http://ad.easa.europa.eu/ad/2013-0254] retaining the requirements of EASA AD 2011-0219, which was superseded, to require deactivation of the ice speed curves in the improved SWC on SAAB 340 aeroplanes, in accordance with SAAB SB 340-27-116. Since EASA AD 2013-0254 was issued, SAAB developed a technical solution to eliminate the premature activation of the stall warning ice curves and issued SB 340-27-120 (modification of the existing Stall Warning System installation), SB 340-27-121 (activation of improved SWC for aeroplanes with a basic wing tip) and SB 340-27-122 (activation of improved SWC for aeroplanes with an extended wing tip). SAAB SB 340-27-120 provides modification and installation instructions valid for pre- and post-SB 340-27-097, 340-27-098, SB 340-27-099 and SB 340-27-116 aeroplanes. For aeroplanes modified in accordance with SAAB AB mod. No. 2650 and/or mod. No. 2859 which are no longer registered in Canada, SAAB AB issued SAAB AB SB 340-27-109 to provide modification and installation instructions to remove the ice speed curve function. For the reasons described above, this [EASA] AD retains the requirements of EASA AD 2013-0254, which is superseded, and requires modification of the Stall Warning and Identification System and replacement of the SWC with an improved unit. You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 6544. Related Service Information Under 1 CFR Part 51 Saab AB, Saab Aeronautics has issued the following service information: Saab Service Bulletin 340-27-109, dated April 14, 2014. Saab Service Bulletin 340-27-116, dated October 18, 2013. Saab Service Bulletin 340-27-120, dated July 11, 2014. Saab Service Bulletin 340-27-121, dated July 11, 2014. Saab Service Bulletin 340-27-122, dated July 11, 2014. The service information describes procedures for deactivating the stall warning speed curves in the SWCs for certain airplanes; replacing the existing SWCs with new, improved SWCs, and modifying the airplane for the new replacement of the SWC. 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. FAA's Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with the State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or develop on other products of these same type designs. Differences Between This Proposed AD and the MCAI or Service Information The applicability in the MCAI excludes airplanes which have been modified by Saab AB mod No. 2650 or mod No. 2859; however, this proposed AD does not exclude those airplanes because this proposed AD requires corrective actions for U.S. N-registered airplanes that have either modification installed. Paragraph (2) of the MCAI requires replacement of the existing SWCs within 18 months after the effective date of the MCAI. However, due to the urgency of the identified unsafe condition, we have determined that this replacement must be done within 12 months after the effective date of this AD, as specified in paragraph (h) of this proposed AD. These differences have been coordinated with the EASA and Saab AB, Saab Aeronautics. Costs of Compliance We estimate that this proposed AD will affect 105 airplanes of U.S. registry. We also estimate that it would take about 78 work-hours per product to comply with the actions required by this proposed AD. The average labor rate is $85 per work-hour. Required parts would cost about $33,000 per product. Based on these figures, we estimate the cost of this proposed AD on U.S. operators to be $4,161,150, or $39,630 per product. 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. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 [[Page 78701]] responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: 1. Is not a ``significant regulatory action'' under Executive Order 12866; 2. Is not a ``significant rule'' under the 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. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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 (AD) 2012-24- 06, Amendment 39-17276 (77 FR 73279, December 10, 2012), and adding the following new AD: Saab AB, Saab Aeronautics: Docket No. FAA-2015-6544; Directorate Identifier 2014-NM-198-AD. (a) Comments Due Date We must receive comments by February 1, 2016. (b) Affected ADs This AD replaces AD 2012-24-06, Amendment 39-17276 (77 FR 73279, December 10, 2012). (c) Applicability This AD applies to Saab AB, Saab Aeronautics (formerly known as Saab AB, Saab Aerosystems) Model 340A (SAAB/SF340A) and SAAB 340B airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD. (1) Model 340A (SAAB/SF340A) airplanes, serial numbers 004 through 159 inclusive. (2) Model SAAB 340B airplanes, serial numbers 160 through 459 inclusive, except serial numbers 170, 342, 362, 363, 367, 372, 379, 385, 395, 405, 409, 431, 441, and 455. (d) Subject Air Transport Association (ATA) of America Code 27: Flight Controls. (e) Reason This AD was prompted by a determination that airplanes with certain modifications were excluded from AD 2012-24-06, Amendment 39-17276 (77 FR 73279, December 10, 2012), and are affected by the identified unsafe condition and the stall warning computer (SWC) required by AD 2012-24-06 contained erroneous logic. We are issuing this AD to prevent natural stall events during operation in icing conditions, which could result in loss of control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Deactivation of Stall Speed Curves For airplanes identified in paragraphs (g)(1) and (g)(2) of this AD: Within 30 days after the effective date of this AD, do the deactivation specified in paragraph (g)(1) or (g)(2) of this AD, as applicable to airplane configuration, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-116, dated October 18, 2013. (1) For airplanes with a basic wing tip that has been modified in accordance with Saab Service Bulletin 340-27-098: Deactivate the stall speed curves in the SWC having part number (P/N) 0020AK6. (2) For airplanes with an extended wing tip that has been modified in accordance with Saab Service Bulletin 340-27-099: Deactivate the stall speed curves in the SWC having part number (P/ N) 0020AK7. (h) Replacement of SWCs Within 12 months after the effective date of this AD: Do the replacement specified in paragraph (h)(1) or (h)(2) of this AD, as applicable. (1) For airplanes with basic wing tips: Replace all SWCs with new, improved SWCs having P/N 0020AK6-1, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-121, dated July 11, 2014. (2) For airplanes with extended wing tips: Replace all SWCs with new, improved SWCs having P/N 0020AK7-1, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-122, dated July 11, 2014. (i) Concurrent Modification Before or concurrently with the accomplishment of the applicable requirements of paragraph (h) of this AD, do the actions specified in paragraph (i)(1) or (i)(2) of this AD, as applicable to airplane configuration. (1) For airplanes on which either Saab AB mod No. 2650 or mod No. 2859 is not installed: Modify the stall warning and identification system, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-120, dated July 11, 2014. (2) For airplanes on which either Saab AB mod No. 2650 or mod No. 2859 is installed, or on which both mods are installed: Modify the stall warning and identification system, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-27-109, dated April 14, 2014. (j) Parts Installation Prohibitions After doing the replacement required by paragraph (h) of this AD, no person may install any SWC having P/N 0020AK, 0020AK1, 0020AK2, 0020AK4, 0020AK6, 0020AK7, or 0020AK3 MOD 1, on any airplane. (k) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, ANM- 116, International Branch, Transport Airplane Directorate, 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 International Branch, send it to ATTN: Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112; fax 425-227-1149. Information may be emailed to: 9-ANM-116-AMOC-REQUESTS@faa.gov. 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. The AMOC approval letter must specifically reference this AD. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or Saab AB, Saab Aeronautics' EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA Airworthiness Directive 2014-0218, dated September 29, 2014, for related information. This MCAI may be found in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-6544. (2) For service information identified in this AD, contact Saab AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone +46 13 18 5591; fax +46 13 18 4874; email saab2000.techsupport@saabgroup.com; Internet http://www.saabgroup.com. You may view this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. Issued in Renton, Washington, on November 23, 2015. Jeffrey E. Duven, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2015-30560 Filed 12-16-15; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 80, No. 242 / Thursday, December 17, 2015 / Proposed Rules 78699
§ 1268.7 Reporting requirements for replacing the stall warning computer street address for the Docket Operations
acquired member assets. (SWC) with a new SWC, which provides office (telephone 800–647–5527) is in
Each Bank shall report information an artificial stall warning in icing the ADDRESSES section. Comments will
related to AMA in accordance with the conditions, and modifying the airplane be available in the AD docket shortly
instructions provided in the Data for the replacement of the SWC. Since after receipt.
Reporting Manual issued by FHFA, as we issued AD 2012–24–06, a FOR FURTHER INFORMATION CONTACT:
amended from time to time. determination was made that airplanes Shahram Daneshmandi, Aerospace
with certain modifications were Engineer, International Branch, ANM–
§ 1268.8 Administrative transactions and
excluded from the AD applicability and 116, Transport Airplane Directorate,
agreements between Banks.
are affected by the identified unsafe FAA, 1601 Lind Avenue SW., Renton,
(a) Delegation of administrative condition and the SWC required by AD
duties. A Bank may delegate the WA 98057–3356; telephone 425–227–
2012–24–06 contained erroneous logic. 1112; fax 425–227–1149.
administration of an AMA program to This proposed AD would add airplanes
another Bank whose administrative SUPPLEMENTARY INFORMATION:
to the applicability, and would add
office has been examined and approved requirements to replace the existing Comments Invited
by FHFA, or previously examined and SWCs with new, improved SWCs and
approved by the Federal Housing We invite you to send any written
modify the airplane for the new relevant data, views, or arguments about
Finance Board, to process AMA replacement of the SWC. We are
transactions. The existence of such a this proposed AD. Send your comments
proposing this AD to prevent natural to an address listed under the
delegation, or the possibility that such stall events during operation in icing
a delegation may be made, must be ADDRESSES section. Include ‘‘Docket No.
conditions, which could result in loss of FAA–2015–6544; Directorate Identifier
disclosed to any potential participating control of the airplane.
financial institution as part of any 2014–NM–198–AD’’ at the beginning of
DATES: We must receive comments on your comments. We specifically invite
AMA-related agreements signed with
this proposed AD by February 1, 2016. comments on the overall regulatory,
that participating financial institution.
(b) Termination of Agreements. Any ADDRESSES: You may send comments by economic, environmental, and energy
agreement made between two or more any of the following methods: aspects of this proposed AD. We will
Banks in connection with any AMA • Federal eRulemaking Portal: Go to consider all comments received by the
program may be terminated by any party http://www.regulations.gov. Follow the closing date and may amend this
after a reasonable notice period. instructions for submitting comments. proposed AD based on those comments.
(c) Delegation of Pricing Authority. A • Fax: 202–493–2251. We will post all comments we
Bank that has delegated its AMA pricing • Mail: U.S. Department of receive, without change, to http://
function to another Bank shall retain a Transportation, Docket Operations, M– www.regulations.gov, including any
right to refuse to acquire AMA at prices 30, West Building Ground Floor, Room personal information you provide. We
it does not consider appropriate. W12–140, 1200 New Jersey Avenue SE., will also post a report summarizing each
Washington, DC 20590. substantive verbal contact we receive
Dated: December 10, 2015.
• Hand Delivery: U.S. Department of about this proposed AD.
Melvin L. Watt, Transportation, Docket Operations, M–
Director, Federal Housing Finance Agency. Discussion
30, West Building Ground Floor, Room
[FR Doc. 2015–31660 Filed 12–16–15; 8:45 am] W12–140, 1200 New Jersey Avenue SE., On November 21, 2012, we issued AD
BILLING CODE 8070–01–P Washington, DC, between 9 a.m. and 5 2012–24–06, Amendment 39–17276 (77
p.m., Monday through Friday, except FR 73279, December 10, 2012). AD
Federal holidays. 2012–24–06 applies to certain Saab AB,
DEPARTMENT OF TRANSPORTATION For service information identified in Saab Aerosystems Model 340A (SAAB/
this proposed rule, contact Saab AB, SF340A) and SAAB 340B airplanes. AD
Federal Aviation Administration Saab Aeronautics, SE–581 88, 2012–24–06 was prompted by reports of
Linköping, Sweden; telephone +46 13 stall events during icing conditions
14 CFR Part 39 18 5591; fax +46 13 18 4874; email where the natural stall warning (buffet)
[Docket No. FAA–2015–6544; Directorate saab2000.techsupport@saabgroup.com; was not identified. AD 2012–24–06
Identifier 2014–NM–198–AD] Internet http://www.saabgroup.com. requires replacing the stall warning
You may view this referenced service computer (SWC) with a new SWC,
RIN 2120–AA64 information at the FAA, Transport which provides an artificial stall
Airplane Directorate, 1601 Lind Avenue warning in icing conditions, and
Airworthiness Directives; Saab AB, modifying the airplane for the
Saab Aeronautics (Formerly Known as SW., Renton, WA. For information on
the availability of this material at the replacement of the SWC. We issued AD
Saab AB, Saab Aerosystems) 2012–24–06 to prevent natural stall
Airplanes FAA, call 425–227–1221.
events during operation in icing
Examining the AD Docket conditions, which, if not corrected,
AGENCY: Federal Aviation
Administration (FAA), DOT. You may examine the AD docket on could result in loss of control of the
ACTION: Notice of proposed rulemaking the Internet at http:// airplane.
(NPRM). www.regulations.gov by searching for Airplanes with certain modifications
Lhorne on DSK5TPTVN1PROD with PROPOSALS
and locating Docket No. FAA–2015– were excluded from the applicability of
SUMMARY: We propose to supersede 6544; or in person at the Docket AD 2012–24–06, Amendment 39–17276
Airworthiness Directive (AD) 2012–24– Management Facility between 9 a.m. (77 FR 73279, December 10, 2012).
06 for certain Saab AB, Saab and 5 p.m., Monday through Friday, Since we issued AD 2012–24–06, we
Aeronautics (formerly known as Saab except Federal holidays. The AD docket have determined that those
AB, Saab Aerosystems) Model 340A contains this proposed AD, the modifications for airplanes identified in
(SAAB/SF340A) and SAAB 340B regulatory evaluation, any comments the applicability of AD 2012–24–06 are
airplanes. AD 2012–24–06 requires received, and other information. The now subject to the identified unsafe
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![78700 Federal Register / Vol. 80, No. 242 / Thursday, December 17, 2015 / Proposed Rules
condition. In addition, a new, improved and installation instructions valid for pre- modified by Saab AB mod No. 2650 or
SWC has been designed to replace the and post-SB 340–27–097, 340–27–098, SB mod No. 2859; however, this proposed
existing SWC, as well as the SWC 340–27–099 and SB 340–27–116 aeroplanes. AD does not exclude those airplanes
For aeroplanes modified in accordance with
required by AD 2012–24–06. The because this proposed AD requires
SAAB AB mod. No. 2650 and/or mod. No.
installation of the new SWC includes 2859 which are no longer registered in corrective actions for U.S. N-registered
modifying the airplane. Canada, SAAB AB issued SAAB AB SB 340– airplanes that have either modification
The European Aviation Safety Agency 27–109 to provide modification and installed.
(EASA), which is the Technical Agent installation instructions to remove the ice Paragraph (2) of the MCAI requires
for the Member States of the European speed curve function. replacement of the existing SWCs
Union, has issued EASA Airworthiness For the reasons described above, this within 18 months after the effective date
Directive 2014–0218, dated September [EASA] AD retains the requirements of EASA of the MCAI. However, due to the
29, 2014 (referred to after this as the AD 2013–0254, which is superseded, and urgency of the identified unsafe
Mandatory Continuing Airworthiness requires modification of the Stall Warning condition, we have determined that this
and Identification System and replacement of
Information, or ‘‘the MCAI’’), to correct replacement must be done within 12
the SWC with an improved unit.
an unsafe condition for certain Saab AB, months after the effective date of this
Saab Aeronautics Model 340A (SAAB/ You may examine the MCAI in the AD, as specified in paragraph (h) of this
SF340A) and SAAB 340B airplanes. The AD docket on the Internet at http:// proposed AD.
MCAI states: www.regulations.gov by searching for These differences have been
A few natural stall events, specifically
and locating Docket No. FAA–2015– coordinated with the EASA and Saab
when operating in icing conditions, have 6544. AB, Saab Aeronautics.
been experienced on SAAB 340 series Related Service Information Under 1 Costs of Compliance
aeroplanes, without receiving a prior stall CFR Part 51
warning. We estimate that this proposed AD
This condition, if not corrected, could Saab AB, Saab Aeronautics has issued will affect 105 airplanes of U.S. registry.
result in loss of control of the aeroplane. the following service information: We also estimate that it would take
To address this potential unsafe condition, • Saab Service Bulletin 340–27–109, about 78 work-hours per product to
SAAB developed a modified stall warning dated April 14, 2014. comply with the actions required by this
system, incorporating improved stall warning • Saab Service Bulletin 340–27–116, proposed AD. The average labor rate is
logic, and issued Service Bulletin (SB) 340–
27–098 and SB 340–27–099, providing
dated October 18, 2013. $85 per work-hour. Required parts
instructions to replace the Stall Warning • Saab Service Bulletin 340–27–120, would cost about $33,000 per product.
Computer (SWC) with a new SWC, and dated July 11, 2014. Based on these figures, we estimate the
instructions to activate the new SWC. The • Saab Service Bulletin 340–27–121, cost of this proposed AD on U.S.
new system included stall warning curves dated July 11, 2014. operators to be $4,161,150, or $39,630
optimized for operation in icing conditions, • Saab Service Bulletin 340–27–122, per product.
which are activated by selection of Engine dated July 11, 2014.
Anti-Ice. The service information describes Authority for This Rulemaking
Consequently, EASA issued AD 2011–0219 procedures for deactivating the stall Title 49 of the United States Code
[http://ad.easa.europa.eu/ad/2011-0219,
warning speed curves in the SWCs for specifies the FAA’s authority to issue
which corresponds to FAA AD 2012–24–06,
Amendment 39–17276 (77 FR 73279, certain airplanes; replacing the existing rules on aviation safety. Subtitle I,
December 10, 2012)] to require installation of SWCs with new, improved SWCs, and section 106, describes the authority of
the improved SWC. modifying the airplane for the new the FAA Administrator. ‘‘Subtitle VII:
After that [EASA] AD was issued, in- replacement of the SWC. This service Aviation Programs,’’ describes in more
service experience with the improved stall information is reasonably available detail the scope of the Agency’s
warning system revealed cases of premature because the interested parties have authority.
stall warning activation during the take-off access to it through their normal course We are issuing this rulemaking under
phase. In numerous recorded cases, the onset the authority described in ‘‘Subtitle VII,
of stall warning occurred without the 6
of business or by the means identified
minute delay after weight off wheels. in the ADDRESSES section. Part A, Subpart III, Section 44701:
This condition, if not corrected, could lead General requirements.’’ Under that
FAA’s Determination and Requirements section, Congress charges the FAA with
to premature stick shaker activation and of This Proposed AD
consequent increase in pilot workload during promoting safe flight of civil aircraft in
the take-off phase, possibly resulting in This product has been approved by air commerce by prescribing regulations
reduced control of the aeroplane. the aviation authority of another for practices, methods, and procedures
To correct this unsafe condition, EASA country, and is approved for operation the Administrator finds necessary for
issued AD 2013–0254 [http:// in the United States. Pursuant to our safety in air commerce. This regulation
ad.easa.europa.eu/ad/2013-0254] retaining
bilateral agreement with the State of is within the scope of that authority
the requirements of EASA AD 2011–0219,
which was superseded, to require Design Authority, we have been notified because it addresses an unsafe condition
deactivation of the ice speed curves in the of the unsafe condition described in the that is likely to exist or develop on
improved SWC on SAAB 340 aeroplanes, in MCAI and service information products identified in this rulemaking
accordance with SAAB SB 340–27–116. referenced above. We are proposing this action.
Since EASA AD 2013–0254 was issued, AD because we evaluated all pertinent
SAAB developed a technical solution to Regulatory Findings
information and determined an unsafe
Lhorne on DSK5TPTVN1PROD with PROPOSALS
eliminate the premature activation of the stall condition exists and is likely to exist or We determined that this proposed AD
warning ice curves and issued SB 340–27– would not have federalism implications
develop on other products of these same
120 (modification of the existing Stall under Executive Order 13132. This
Warning System installation), SB 340–27– type designs.
121 (activation of improved SWC for proposed AD would not have a
Differences Between This Proposed AD substantial direct effect on the States, on
aeroplanes with a basic wing tip) and SB and the MCAI or Service Information
340–27–122 (activation of improved SWC for the relationship between the national
aeroplanes with an extended wing tip). The applicability in the MCAI Government and the States, or on the
SAAB SB 340–27–120 provides modification excludes airplanes which have been distribution of power and
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![Federal Register / Vol. 80, No. 242 / Thursday, December 17, 2015 / Proposed Rules 78701
responsibilities among the various (e) Reason (j) Parts Installation Prohibitions
levels of government. This AD was prompted by a determination After doing the replacement required by
For the reasons discussed above, I that airplanes with certain modifications paragraph (h) of this AD, no person may
certify this proposed regulation: were excluded from AD 2012–24–06, install any SWC having P/N 0020AK,
Amendment 39–17276 (77 FR 73279, 0020AK1, 0020AK2, 0020AK4, 0020AK6,
1. Is not a ‘‘significant regulatory December 10, 2012), and are affected by the 0020AK7, or 0020AK3 MOD 1, on any
action’’ under Executive Order 12866; identified unsafe condition and the stall airplane.
2. Is not a ‘‘significant rule’’ under the warning computer (SWC) required by AD
DOT Regulatory Policies and Procedures 2012–24–06 contained erroneous logic. We (k) Other FAA AD Provisions
(44 FR 11034, February 26, 1979); are issuing this AD to prevent natural stall The following provisions also apply to this
3. Will not affect intrastate aviation in events during operation in icing conditions, AD:
which could result in loss of control of the (1) Alternative Methods of Compliance
Alaska; and airplane. (AMOCs): The Manager, ANM–116,
4. Will not have a significant International Branch, Transport Airplane
economic impact, positive or negative, (f) Compliance
Directorate, FAA, has the authority to
on a substantial number of small entities Comply with this AD within the approve AMOCs for this AD, if requested
under the criteria of the Regulatory compliance times specified, unless already using the procedures found in 14 CFR 39.19.
Flexibility Act. done. In accordance with 14 CFR 39.19, send your
(g) Deactivation of Stall Speed Curves request to your principal inspector or local
List of Subjects in 14 CFR Part 39 Flight Standards District Office, as
For airplanes identified in paragraphs appropriate. If sending information directly
Air transportation, Aircraft, Aviation (g)(1) and (g)(2) of this AD: Within 30 days to the International Branch, send it to ATTN:
safety, Incorporation by reference, after the effective date of this AD, do the Shahram Daneshmandi, Aerospace Engineer,
Safety. deactivation specified in paragraph (g)(1) or International Branch, ANM–116, Transport
(g)(2) of this AD, as applicable to airplane
The Proposed Amendment Airplane Directorate, FAA, 1601 Lind
configuration, in accordance with the
Avenue SW., Renton, WA 98057–3356;
Accomplishment Instructions of Saab Service
Accordingly, under the authority Bulletin 340–27–116, dated October 18, 2013.
telephone 425–227–1112; fax 425–227–1149.
delegated to me by the Administrator, Information may be emailed to: 9-ANM-116-
(1) For airplanes with a basic wing tip that
the FAA proposes to amend 14 CFR part has been modified in accordance with Saab AMOC-REQUESTS@faa.gov. Before using
39 as follows: Service Bulletin 340–27–098: Deactivate the any approved AMOC, notify your appropriate
stall speed curves in the SWC having part principal inspector, or lacking a principal
PART 39—AIRWORTHINESS number (P/N) 0020AK6. inspector, the manager of the local flight
DIRECTIVES (2) For airplanes with an extended wing tip standards district office/certificate holding
that has been modified in accordance with district office. The AMOC approval letter
Saab Service Bulletin 340–27–099: Deactivate must specifically reference this AD.
■ 1. The authority citation for part 39 (2) Contacting the Manufacturer: For any
continues to read as follows: the stall speed curves in the SWC having part
number (P/N) 0020AK7. requirement in this AD to obtain corrective
Authority: 49 U.S.C. 106(g), 40113, 44701. actions from a manufacturer, the action must
(h) Replacement of SWCs be accomplished using a method approved
§ 39.13 [Amended] Within 12 months after the effective date by the Manager, International Branch, ANM–
■ 2. The FAA amends § 39.13 by of this AD: Do the replacement specified in 116, Transport Airplane Directorate, FAA; or
removing Airworthiness (AD) 2012–24– paragraph (h)(1) or (h)(2) of this AD, as the European Aviation Safety Agency
applicable. (EASA); or Saab AB, Saab Aeronautics’ EASA
06, Amendment 39–17276 (77 FR
(1) For airplanes with basic wing tips: Design Organization Approval (DOA). If
73279, December 10, 2012), and adding approved by the DOA, the approval must
Replace all SWCs with new, improved SWCs
the following new AD: having P/N 0020AK6–1, in accordance with include the DOA-authorized signature.
Saab AB, Saab Aeronautics: Docket No. the Accomplishment Instructions of Saab
Related Information
FAA–2015–6544; Directorate Identifier Service Bulletin 340–27–121, dated July 11,
2014–NM–198–AD. 2014. (1) Refer to Mandatory Continuing
(2) For airplanes with extended wing tips: Airworthiness Information (MCAI) EASA
(a) Comments Due Date Replace all SWCs with new, improved SWCs Airworthiness Directive 2014–0218, dated
We must receive comments by February 1, having P/N 0020AK7–1, in accordance with September 29, 2014, for related information.
2016. the Accomplishment Instructions of Saab This MCAI may be found in the AD docket
Service Bulletin 340–27–122, dated July 11, on the Internet at http://www.regulations.gov
(b) Affected ADs 2014. by searching for and locating Docket No.
This AD replaces AD 2012–24–06, FAA–2015–6544.
Amendment 39–17276 (77 FR 73279, (i) Concurrent Modification (2) For service information identified in
December 10, 2012). Before or concurrently with the this AD, contact Saab AB, Saab Aeronautics,
accomplishment of the applicable SE–581 88, Linköping, Sweden; telephone
(c) Applicability requirements of paragraph (h) of this AD, do +46 13 18 5591; fax +46 13 18 4874; email
This AD applies to Saab AB, Saab the actions specified in paragraph (i)(1) or saab2000.techsupport@saabgroup.com;
Aeronautics (formerly known as Saab AB, (i)(2) of this AD, as applicable to airplane Internet http://www.saabgroup.com. You
Saab Aerosystems) Model 340A (SAAB/ configuration. may view this service information at the
SF340A) and SAAB 340B airplanes, (1) For airplanes on which either Saab AB FAA, Transport Airplane Directorate, 1601
certificated in any category, as identified in mod No. 2650 or mod No. 2859 is not Lind Avenue SW., Renton, WA. For
paragraphs (c)(1) and (c)(2) of this AD. installed: Modify the stall warning and information on the availability of this
(1) Model 340A (SAAB/SF340A) airplanes, identification system, in accordance with the material at the FAA, call 425–227–1221.
Lhorne on DSK5TPTVN1PROD with PROPOSALS
serial numbers 004 through 159 inclusive. Accomplishment Instructions of Saab Service
(2) Model SAAB 340B airplanes, serial Bulletin 340–27–120, dated July 11, 2014. Issued in Renton, Washington, on
numbers 160 through 459 inclusive, except (2) For airplanes on which either Saab AB November 23, 2015.
serial numbers 170, 342, 362, 363, 367, 372, mod No. 2650 or mod No. 2859 is installed, Jeffrey E. Duven,
379, 385, 395, 405, 409, 431, 441, and 455. or on which both mods are installed: Modify Manager, Transport Airplane Directorate,
the stall warning and identification system, Aircraft Certification Service.
(d) Subject in accordance with the Accomplishment
Air Transport Association (ATA) of Instructions of Saab Service Bulletin 340–27– [FR Doc. 2015–30560 Filed 12–16–15; 8:45 am]
America Code 27: Flight Controls. 109, dated April 14, 2014. BILLING CODE 4910–13–P
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Document Created: 2018-03-02 09:18:34
Document Modified: 2018-03-02 09:18:34
| 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 | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by February 1, 2016. | |
| Contact | Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112; fax 425-227-1149. | |
| FR Citation | 80 FR 78699 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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