80 FR 81788 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 251 (December 31, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 251 (December 31, 2015)
| Page Range | 81788-81792 | |
| FR Document | 2015-32852 |
[Federal Register Volume 80, Number 251 (Thursday, December 31, 2015)] [Proposed Rules] [Pages 81788-81792] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-32852] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-8130; Directorate Identifier 2014-NM-175-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777-200 and -300 series airplanes equipped with Pratt and Whitney engines. This proposed AD was prompted by reports of blocked drain lines at the engine forward strut that caused flammable fluid to accumulate in a flammable leakage zone. This proposed AD would require doing the following actions on the left strut and right strut: A one-time cleaning of certain forward strut drain lines; installing new forward strut drain lines and insulation blankets; a leak check of the forward strut drain lines; and repair if any leak is found. This proposed AD would also require revising the maintenance or inspection program, as applicable, to incorporate a certain airworthiness limitation. We are proposing this AD to prevent blockage of forward strut drain lines, which could cause flammable fluids to collect in the forward strut area and potentially cause an uncontrolled fire or cause failure of engine attachment structure and consequent airplane loss. DATES: We must receive comments on this proposed AD by February 16, 2016. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, 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: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, [[Page 81789]] MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.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. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-8130. 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- 8130; 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 Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6501; fax: 425-917-6590; email: [email protected]. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2015-8130; Directorate Identifier 2014-NM-175-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 because of 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 We received multiple reports of the forward drain lines of the engine struts being blocked with coked particles. Coked particles form when hydraulic fluid is exposed to, and degraded by, the high temperatures of the hot core zone of the engine and the hot pneumatic bleed ducts. In two events, fluids backed up into the electrical (left) side of the disconnect box assembly of the strut system, causing an electrical fault that resulted in a false engine indicating and crew- alerting system (EICAS) message for overheat detection. Flammable fluids collecting in the electrical side of the disconnect box assembly of the strut system can cause an electrical fault for electrical components, and create a potential ignition source for trapped flammable fluids that can lead to a fire. In three other events, flammable fluids backed up and pooled in the fluid (right) side of the disconnect box assembly of the strut system. Flammable fluids collecting in the disconnect box assembly of the strut system are a fire hazard because that area has no fire detection, containment, or extinguishing capability, and with an ignition source can result in an uncontrolled fire in the strut. Also, flammable fluids pooling in the disconnect box assembly of the strut system can spill over onto the engine and initiate an engine fire in the engine core cavity compartment. Hydraulic fluid collecting in the disconnect box assembly of the strut system can cause contamination and hydrogen embrittlement of the titanium structure resulting in cracks that can compromise the engine firewall by allowing a fire in the engine area to enter the strut; or by allowing flammable fluids to leak down and initiate an engine fire in the engine core cavity compartment, and also compromise the engine fire extinguishing system. Hydraulic fluid contamination, including contamination caused by hydraulic fluid in its liquid, vapor, and/or solid (i.e., coked) form, in the strut forward dry bay can lead to hydrogen embrittlement of the titanium fittings of the forward engine mount bulkhead and also the consequent inability of the fittings to carry engine loads, resulting in the loss or separation of an engine. Hydrogen embrittlement could also cause a through-crack formation across the fittings through which an engine fire could breach into the strut, resulting in an uncontained strut fire. We are proposing this AD to prevent blockage of forward strut drain lines, which could cause flammable fluids to collect in the forward strut area and potentially cause an uncontrolled fire or cause failure of engine attachment structure and consequent airplane loss. Related Service Information Under 1 CFR Part 51 We reviewed the following service information: Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015. The service information describes procedures for installing new forward strut drain lines and insulation blankets on the left and right engines. Boeing Special Attention Service Bulletin 777-54-0028, Revision 1, dated December 10, 2013. This service information describes procedures for a general visual inspection for hydraulic fluid contamination of the interior of the strut forward dry bay and corrective actions. Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain Line'' as specified in Section D.4, Pratt and Whitney Forward Strut Drain Line, dated March 2014, of the Boeing 777 Maintenance Planning Data (MPD) Document Section 9, Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D622W001-9, dated October 2014. This service information describes an airworthiness limitation task for the functional check of the forward strut drain line. 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 of this NPRM. FAA's Determination We are proposing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements This proposed AD would require accomplishing the actions specified in the service information described previously. For information on the procedures and compliance times specified in Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015; and Boeing Special Attention Service Bulletin 777-54-0028, Revision 1, dated December 10, 2013: See this service information at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 8130. The phrase ``corrective actions'' is used in this proposed AD. ``Corrective actions'' are actions that correct or address any condition found. Corrective actions in an AD could include, for example, repairs. [[Page 81790]] This proposed AD would require revisions to certain operator maintenance documents to include a new airworthiness limitation containing repetitive functional checks of the forward engine strut drain line. Compliance with these actions is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance in accordance with the procedures specified in paragraph (k) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane. Other Relevant Rulemaking On September 23, 2014, we issued AD 2014-20-10, Amendment 39-17983 (79 FR 60331, October 7, 2014), for certain The Boeing Company Model 777-200 and -300 series airplanes equipped with Pratt & Whitney engines. AD 2014-20-10 currently requires repetitive general visual inspections of the strut forward dry bay for the presence of hydraulic fluid, and related investigative and corrective actions (including checking drain lines for blockage due to hydraulic fluid coking; cleaning or replacing drain lines to allow drainage) if necessary; and adds airplanes to the applicability. AD 2014-20-10 was prompted by reports of hydraulic fluid contamination (including contamination caused by hydraulic fluid in its liquid, vapor, and/or solid (coked) form) found in the strut forward dry bay. The actions required by AD 2014-20-10, Amendment 39-17983 (79 FR 60331, October 7, 2014), are intended to detect and correct hydraulic fluid contamination of the strut forward dry bay, which could result in hydrogen embrittlement of the titanium forward engine mount bulkhead fittings, and consequent inability of the fittings to carry engine loads and resulting in engine separation. Hydrogen embrittlement could also cause a through-crack formation across the fittings through which an engine fire could breach into the strut, resulting in an uncontained strut fire. Accomplishment of the actions specified below terminates the inspections required by paragraph (g) of AD 2014-20-10, Amendment 39- 17983 (79 FR 60331, October 7, 2014), at the modified area only; provided the actions are accomplished concurrently, or the actions specified below for Boeing Special Attention Service Bulletin 777-54- 0028, Revision 1, dated December 10, 2013, are done after accomplishing the actions specified in paragraphs (g)(1) through (g)(5) of this proposed AD. The actions specified in paragraphs (g)(1) through (g)(4) of this proposed AD on the left and right struts, done in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015; and the revision done as specified in paragraph (g)(5) of this proposed AD. A one-time general visual inspection for hydraulic fluid contamination of the interior of the strut forward dry bay, and all applicable related investigative and corrective actions, done in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-54-0028, Revision 1, dated December 10, 2013. On August 14, 2015, we issued AD 2015-17-13, Amendment 39-18246 (80 FR 52948, September 2, 2015) for certain The Boeing Company Model 777- 200 and -300 series airplanes equipped with Pratt and Whitney engines. AD 2015-17-13 currently requires repetitive functional checks for blockage of the forward strut drain line, and doing corrective actions (including cleaning or replacing any blocked drain lines) if necessary; and a one-time cleaning of certain forward strut drain lines. AD 2015- 17-13 also includes an optional terminating action, which specifies accomplishing the actions in Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015 and incorporating Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain Line'' into the maintenance or inspection program, as applicable. AD 2015-17-13 was prompted by reports of blocked drain lines at the engine forward strut that caused flammable fluid to accumulate in a flammable leakage zone. The actions required by AD 2015-17-13 are intended to detect and correct blockage of forward strut drain lines, which could cause flammable fluids to collect in the forward strut area and potentially cause an uncontrolled fire or cause failure of engine attachment structure and consequent airplane loss. Accomplishment of the actions required by paragraph (g) of this proposed AD (doing the actions specified Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015; and incorporating Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain Line'' as specified in Section D.4, Pratt and Whitney Forward Strut Drain Line, dated March 2014, of the Boeing 777 Maintenance Planning Data (MPD) Document Section 9, Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D622W001-9, dated October 2014, into the maintenance or inspection program, as applicable) would terminate the actions required by paragraph (g) of AD 2015-17-13, Amendment 39-18246 (80 FR 52948, September 2, 2015), at the modified area only. Explanation of ``RC'' Steps in Service Information The FAA worked in conjunction with industry, under the Airworthiness Directive Implementation Aviation Rulemaking Committee (ARC), to enhance the AD system. One enhancement was a new process for annotating which steps in the service information are required for compliance with an AD. Differentiating these steps from other tasks in the service information is expected to improve an owner's/operator's understanding of crucial AD requirements and help provide consistent judgment in AD compliance. The steps identified as Required for Compliance (RC) in any service information identified previously have a direct effect on detecting, preventing, resolving, or eliminating an identified unsafe condition. For service information that contains steps that are labeled as RC, the following provisions apply: (1) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD, and an AMOC is required for any deviations to RC steps, including substeps and identified figures; and (2) steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. Costs of Compliance We estimate that this proposed AD affects 54 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: [[Page 81791]] Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost per Cost on U.S. Action Labor cost Parts cost product operators ---------------------------------------------------------------------------------------------------------------- Installing new drain lines and 16 work-hours x $85 per $17,080 $18,440 $995,760 insulation blankets, doing a leak hour = $1,360. check, and revising the maintenance or inspection program. ---------------------------------------------------------------------------------------------------------------- We have received no definitive data that would enable us to provide cost estimates for the on-condition actions specified in this proposed AD. According to the manufacturer, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected individuals. We do not control warranty coverage for affected individuals. As a result, we have included all costs in our cost estimate. 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 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 adding the following new airworthiness directive (AD): The Boeing Company: Docket No. FAA-2015-8130; Directorate Identifier 2014-NM-175-AD. (a) Comments Due Date We must receive comments by February 16, 2016. (b) Affected ADs This AD affects the ADs specified in paragraphs (b)(1) and (b)(2) of this AD. (1) AD 2014-20-10, Amendment 39-17983 (79 FR 60331, October 7, 2014). (2) AD 2015-17-13, Amendment 39-18246 (80 FR 52948, September 2, 2015). (c) Applicability This AD applies to The Boeing Company Model 777-200 and -300 series airplanes, certificated in any category, equipped with Pratt & Whitney engines, as identified in Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015. (d) Subject Air Transport Association (ATA) of America Code 71, Powerplant. (e) Unsafe Condition This AD was prompted by reports of blocked drain lines at the engine forward strut that caused flammable fluid to accumulate in a flammable leakage zone. We are issuing this AD to prevent blockage of forward strut drain lines, which could cause flammable fluids to collect in the forward strut area and potentially cause an uncontrolled fire or cause failure of engine attachment structure and consequent airplane loss. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Actions Within 4,000 flight cycles or 750 days after the effective date of this AD, whichever occurs later: Accomplish the actions specified in paragraphs (g)(1) through (g)(4) of this AD on the left and right struts, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015; and accomplish the revision specified in paragraph (g)(5) of this AD. (1) Disconnect and remove the forward strut drain lines. (2) Clean the left system disconnect, the strut forward lower spar, and the forward fireseal pan drain lines. (3) Install new forward strut drain lines and insulation blankets. (4) Do a leak check of the forward strut drain lines, for any leak, and repair if any leak is found. (5) Revise the maintenance or inspection program, as applicable, to incorporate Airworthiness Limitation 54-AWL-01, ``Forward Strut Drain Line'' as specified in Section D.4, Pratt and Whitney Forward Strut Drain Line, dated March 2014, of the Boeing 777 Maintenance Planning Data (MPD) Document Section 9, Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D622W001- 9, dated October 2014. The initial compliance time for Airworthiness Limitation 54-AWL-01 is within 2,000 flight cycles or 1,500 days, whichever occurs first, after doing the actions specified in paragraphs (g)(1) through (g)(4) of this AD. (h) No Alternative Actions or Intervals After accomplishing the revision required by paragraph (g)(5) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k) of this AD. (i) Terminating Action for Other ADs (1) Accomplishing the actions required by paragraph (g) of this AD terminates the actions required by paragraph (g) of AD 2015-17- 13, Amendment 39-18246 (80 FR [[Page 81792]] 52948, September 2, 2015, at the modified area only. (2) Accomplishing the actions specified in paragraphs (i)(2)(i) and (i)(2)(ii) of this AD terminates the inspections required by paragraph (g) of AD 2014-20-10, Amendment 39-17983 (79 FR 60331, October 7, 2014), at the modified area only, provided the actions are accomplished concurrently, or the actions specified in paragraph (i)(2)(ii) of this AD are done after accomplishing the actions specified in paragraph (i)(2)(i) of this AD. (i) The actions specified in paragraphs (g)(1) through (g)(4) of this AD on the left and right struts are done in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-71-0055, Revision 1, dated April 15, 2015; and the revision specified in paragraph (g)(5) of this AD is done. (ii) A one-time general visual inspection for hydraulic fluid contamination (including contamination caused by hydraulic fluid in its liquid, vapor, and/or solid (coked) form) of the interior of the strut forward dry bay, and all applicable related investigative and corrective actions (including checking drain lines for blockage due to hydraulic fluid coking, and cleaning or replacing drain lines to allow drainage) are done in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-54- 0028, Revision 1, dated December 10, 2013, except where Boeing Special Attention Service Bulletin 777-54-0028, Revision 1, dated December 10, 2013, specifies to contact Boeing for repair, the repair must be done using a method approved in accordance with the procedures specified in paragraph (k) of this AD. (j) Credit for Previous Actions This paragraph provides credit for actions required by paragraph (g) of this AD, if those actions were performed before the effective date of this AD using Boeing Special Attention Service Bulletin 777- 71-0055, dated June 12, 2014, which is not incorporated by reference in this AD. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle Aircraft Certification Office (ACO), 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 ACO, send it to the attention of the person identified in paragraph (l)(1) of this AD. Information may be emailed to: [email protected]. (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) For service information that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (k)(3)(i) and (k)(3)(ii) apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. (l) Related Information (1) For more information about this AD, contact Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6501; fax: 425-917-6590; email: [email protected]. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544- 5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.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. Issued in Renton, Washington, on December 21, 2015. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2015-32852 Filed 12-30-15; 8:45 am] BILLING CODE 4910-13-P
![81788 Federal Register / Vol. 80, No. 251 / Thursday, December 31, 2015 / Proposed Rules
(h) Repetitive Rototest Inspections Dan Rodina, Aerospace Engineer, DEPARTMENT OF TRANSPORTATION
Within 36 months after the effective date International Branch, ANM–116, Transport
of this AD: Remove the fasteners and Airplane Directorate, FAA, 1601 Lind Federal Aviation Administration
measure the diameter of the fastener holes; Avenue SW., Renton, WA 98057–3356;
and, before further flight, do the applicable telephone 425–227–2125; fax 425–227–1149. 14 CFR Part 39
actions required by paragraph (h)(1) or (h)(2) Information may be emailed to: 9-ANM-116-
of this AD, in accordance with the AMOC-REQUESTS@faa.gov. Before using [Docket No. FAA–2015–8130; Directorate
Accomplishment Instructions of Airbus any approved AMOC, notify your appropriate Identifier 2014–NM–175–AD]
Service Bulletin A300–57–0257 (for Model principal inspector, or lacking a principal RIN 2120–AA64
A300 B2–1A, B2–1C, B2K–3C, B2–203, B4– inspector, the manager of the local flight
2C, B4–103, and B4–203 airplanes) or A300– standards district office/certificate holding Airworthiness Directives; The Boeing
57–6115 (for Model A300 B4–601, B4–603, district office. The AMOC approval letter
B4–620, B4–622, B4–605R, B4–622R, F4– Company Airplanes
must specifically reference this AD.
605R, F4–622R, and C4–605R Variant F AGENCY: Federal Aviation
(2) Contacting the Manufacturer: For any
airplanes), as applicable. Administration (FAA), DOT.
(1) If one or more of the hole diameters is requirement in this AD to obtain corrective
outside the tolerance of the nominal actions from a manufacturer, the action must ACTION: Notice of proposed rulemaking
diameter, and outside the tolerance of the be accomplished using a method approved (NPRM).
first and second oversize: Do the applicable by the Manager, International Branch, ANM–
corrective actions required by paragraph (i) of 116, Transport Airplane Directorate, FAA; or SUMMARY: We propose to adopt a new
this AD. the European Aviation Safety Agency airworthiness directive (AD) for certain
(2) If all of the hole diameters are within (EASA); or Airbus’s EASA Design The Boeing Company Model 777–200
the tolerance of the nominal diameter or the Organization Approval (DOA). If approved by and –300 series airplanes equipped with
first or second oversize: Do detailed and the DOA, the approval must include the Pratt and Whitney engines. This
rototest inspections for cracking of the DOA-authorized signature. proposed AD was prompted by reports
fastener holes at the left-hand and right-hand (3) Required for Compliance (RC): Except
sides of the FR40 lower junction, in of blocked drain lines at the engine
as required by paragraph (i) of this AD: If any forward strut that caused flammable
accordance with the Accomplishment service information contains procedures or
Instructions of Airbus Service Bulletins fluid to accumulate in a flammable
tests that are identified as RC, those
A300–57–0257 (for Model A300 B2–1A, B2– leakage zone. This proposed AD would
procedures and tests must be done to comply
1C, B2K–3C, B2–203, B4–2C, B4–103, and require doing the following actions on
B4–203 airplanes) or A300–57–6115 (for with this AD; any procedures or tests that are
not identified as RC are recommended. Those
the left strut and right strut: A one-time
Model A300 B4–601, B4–603, B4–620, B4– cleaning of certain forward strut drain
622, B4–605R, B4–622R, F4–605R, F4–622R, procedures and tests that are not identified
as RC may be deviated from using accepted lines; installing new forward strut drain
and C4–605R Variant F airplanes), both dated
April 4, 2014, as applicable. If no cracking is methods in accordance with the operator’s lines and insulation blankets; a leak
found, before further flight, install new maintenance or inspection program without check of the forward strut drain lines;
fasteners of the same diameter in special obtaining approval of an AMOC, provided and repair if any leak is found. This
clearance fit for fasteners 1 through 3 of the the procedures and tests identified as RC can proposed AD would also require
FR40 lower junction, in accordance with the be done and the airplane can be put back in revising the maintenance or inspection
Accomplishment Instructions of Airbus an airworthy condition. Any substitutions or program, as applicable, to incorporate a
Service Bulletins A300–57–0257 or A300– changes to procedures or tests identified as certain airworthiness limitation. We are
57–6115, both dated April 4, 2014, as RC require approval of an AMOC. proposing this AD to prevent blockage
applicable. Repeat the rototest inspection of forward strut drain lines, which
thereafter at intervals not to exceed 7,000 (k) Related Information
could cause flammable fluids to collect
flight cycles. Accomplishment of a rototest (1) Refer to Mandatory Continuing
inspection required by this paragraph in the forward strut area and potentially
Airworthiness Information (MCAI) European
terminates the repetitive HFEC inspections cause an uncontrolled fire or cause
Aviation Safety Agency (EASA)
required by paragraph (g) of this AD. failure of engine attachment structure
Airworthiness Directive 2014–0272, dated
December 12, 2014, for related information.
and consequent airplane loss.
(i) Corrective Actions
This MCAI may be found in the AD docket DATES: We must receive comments on
If, during any inspection required by this
on the Internet at http://www.regulations.gov this proposed AD by February 16, 2016.
AD, any crack is found, or one or more of the
hole diameters are outside the tolerance of by searching for and locating it in Docket No. ADDRESSES: You may send comments,
the nominal diameter: Repair before further FAA–2015–8134. using the procedures found in 14 CFR
flight using a method approved by the (2) For service information identified in 11.43 and 11.45, by any of the following
Manager, International Branch, ANM–116, this AD, contact Airbus SAS, Airworthiness methods:
Transport Airplane Directorate, FAA; or the Office—EAW, 1 Rond Point Maurice • Federal eRulemaking Portal: Go to
European Aviation Safety Agency (EASA); or Bellonte, 31707 Blagnac Cedex, France; http://www.regulations.gov. Follow the
Airbus’s EASA Design Organization telephone +33 5 61 93 36 96; fax +33 5 61 instructions for submitting comments.
Approval (DOA). 93 44 51; email account.airworth-eas@
• Fax: 202–493–2251.
airbus.com; Internet http://www.airbus.com.
(j) Other FAA AD Provisions • Mail: U.S. Department of
You may view this service information at the
The following provisions also apply to this FAA, Transport Airplane Directorate, 1601
Transportation, Docket Operations, M–
AD: Lind Avenue SW., Renton, WA. For 30, West Building Ground Floor, Room
(1) Alternative Methods of Compliance information on the availability of this W12–140, 1200 New Jersey Avenue SE.,
(AMOCs): The Manager, International material at the FAA, call 425–227–1221. Washington, DC 20590.
Branch, ANM–116, Transport Airplane • Hand Delivery: Deliver to Mail
tkelley on DSK3SPTVN1PROD with PROPOSALS
Directorate, FAA, has the authority to Issued in Renton, Washington, on
address above between 9 a.m. and 5
approve AMOCs for this AD, if requested December 21, 2015.
p.m., Monday through Friday, except
using the procedures found in 14 CFR 39.19. Michael Kaszycki,
In accordance with 14 CFR 39.19, send your Federal holidays.
Acting Manager, Transport Airplane For service information identified in
request to your principal inspector or local
Directorate, Aircraft Certification Service. this proposed AD, contact Boeing
Flight Standards District Office, as
appropriate. If sending information directly [FR Doc. 2015–32848 Filed 12–30–15; 8:45 am] Commercial Airplanes, Attention: Data
to the International Branch, send it to ATTN: BILLING CODE 4910–13–P & Services Management, P.O. Box 3707,
VerDate Sep<11>2014 16:32 Dec 30, 2015 Jkt 238001 PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 E:\FR\FM\31DEP1.SGM 31DEP1](https://thefederalregister.org/doc/80_FR_82039/page/1.svg)
![Federal Register / Vol. 80, No. 251 / Thursday, December 31, 2015 / Proposed Rules 81791
ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
Installing new drain lines and insulation blankets, 16 work-hours × $85 per hour = $17,080 $18,440 $995,760
doing a leak check, and revising the maintenance or $1,360.
inspection program.
We have received no definitive data (4) Will not have a significant forward strut drain lines, which could cause
that would enable us to provide cost economic impact, positive or negative, flammable fluids to collect in the forward
estimates for the on-condition actions on a substantial number of small entities strut area and potentially cause an
uncontrolled fire or cause failure of engine
specified in this proposed AD. under the criteria of the Regulatory
attachment structure and consequent
According to the manufacturer, some Flexibility Act. airplane loss.
of the costs of this proposed AD may be
List of Subjects in 14 CFR Part 39 (f) Compliance
covered under warranty, thereby
reducing the cost impact on affected Air transportation, Aircraft, Aviation Comply with this AD within the
individuals. We do not control warranty safety, Incorporation by reference, compliance times specified, unless already
coverage for affected individuals. As a Safety. done.
result, we have included all costs in our The Proposed Amendment (g) Actions
cost estimate. Within 4,000 flight cycles or 750 days after
Accordingly, under the authority
Authority for This Rulemaking the effective date of this AD, whichever
delegated to me by the Administrator, occurs later: Accomplish the actions
Title 49 of the United States Code the FAA proposes to amend 14 CFR part specified in paragraphs (g)(1) through (g)(4)
specifies the FAA’s authority to issue 39 as follows: of this AD on the left and right struts, in
rules on aviation safety. Subtitle I, accordance with the Accomplishment
section 106, describes the authority of PART 39—AIRWORTHINESS Instructions of Boeing Special Attention
the FAA Administrator. Subtitle VII: DIRECTIVES Service Bulletin 777–71–0055, Revision 1,
dated April 15, 2015; and accomplish the
Aviation Programs, describes in more ■ 1. The authority citation for part 39 revision specified in paragraph (g)(5) of this
detail the scope of the Agency’s continues to read as follows: AD.
authority. (1) Disconnect and remove the forward
We are issuing this rulemaking under Authority: 49 U.S.C. 106(g), 40113, 44701.
strut drain lines.
the authority described in Subtitle VII, § 39.13 [Amended] (2) Clean the left system disconnect, the
Part A, Subpart III, Section 44701: ■ 2. The FAA amends § 39.13 by adding strut forward lower spar, and the forward
‘‘General requirements.’’ Under that fireseal pan drain lines.
the following new airworthiness (3) Install new forward strut drain lines
section, Congress charges the FAA with directive (AD):
promoting safe flight of civil aircraft in and insulation blankets.
The Boeing Company: Docket No. FAA– (4) Do a leak check of the forward strut
air commerce by prescribing regulations drain lines, for any leak, and repair if any
2015–8130; Directorate Identifier 2014–
for practices, methods, and procedures leak is found.
NM–175–AD.
the Administrator finds necessary for (5) Revise the maintenance or inspection
safety in air commerce. This regulation (a) Comments Due Date program, as applicable, to incorporate
is within the scope of that authority We must receive comments by February Airworthiness Limitation 54–AWL–01,
because it addresses an unsafe condition 16, 2016. ‘‘Forward Strut Drain Line’’ as specified in
that is likely to exist or develop on Section D.4, Pratt and Whitney Forward Strut
(b) Affected ADs Drain Line, dated March 2014, of the Boeing
products identified in this rulemaking
This AD affects the ADs specified in 777 Maintenance Planning Data (MPD)
action. Document Section 9, Airworthiness
paragraphs (b)(1) and (b)(2) of this AD.
Regulatory Findings (1) AD 2014–20–10, Amendment 39–17983 Limitations (AWLs) and Certification
(79 FR 60331, October 7, 2014). Maintenance Requirements (CMRs),
We determined that this proposed AD (2) AD 2015–17–13, Amendment 39–18246 D622W001–9, dated October 2014. The
would not have federalism implications (80 FR 52948, September 2, 2015). initial compliance time for Airworthiness
under Executive Order 13132. This Limitation 54–AWL–01 is within 2,000 flight
proposed AD would not have a (c) Applicability cycles or 1,500 days, whichever occurs first,
substantial direct effect on the States, on This AD applies to The Boeing Company after doing the actions specified in
the relationship between the national Model 777–200 and –300 series airplanes, paragraphs (g)(1) through (g)(4) of this AD.
Government and the States, or on the certificated in any category, equipped with
(h) No Alternative Actions or Intervals
Pratt & Whitney engines, as identified in
distribution of power and Boeing Special Attention Service Bulletin After accomplishing the revision required
responsibilities among the various 777–71–0055, Revision 1, dated April 15, by paragraph (g)(5) of this AD, no alternative
levels of government. 2015. actions (e.g., inspections) or intervals may be
For the reasons discussed above, I used unless the actions or intervals are
certify this proposed regulation: (d) Subject approved as an alternative method of
compliance (AMOC) in accordance with the
tkelley on DSK3SPTVN1PROD with PROPOSALS
(1) Is not a ‘‘significant regulatory Air Transport Association (ATA) of
action’’ under Executive Order 12866, America Code 71, Powerplant. procedures specified in paragraph (k) of this
(2) Is not a ‘‘significant rule’’ under AD.
(e) Unsafe Condition
the DOT Regulatory Policies and This AD was prompted by reports of (i) Terminating Action for Other ADs
Procedures (44 FR 11034, February 26, blocked drain lines at the engine forward (1) Accomplishing the actions required by
1979), strut that caused flammable fluid to paragraph (g) of this AD terminates the
(3) Will not affect intrastate aviation accumulate in a flammable leakage zone. We actions required by paragraph (g) of AD
in Alaska, and are issuing this AD to prevent blockage of 2015–17–13, Amendment 39–18246 (80 FR
VerDate Sep<11>2014 16:32 Dec 30, 2015 Jkt 238001 PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 E:\FR\FM\31DEP1.SGM 31DEP1](https://thefederalregister.org/doc/80_FR_82039/page/4.svg)
![81792 Federal Register / Vol. 80, No. 251 / Thursday, December 31, 2015 / Proposed Rules
52948, September 2, 2015, at the modified identified in an RC step, must be done to prevent loss of flight-critical
area only. comply with the AD. An AMOC is required information displayed to the flightcrew
(2) Accomplishing the actions specified in for any deviations to RC steps, including during a critical phase of flight, such as
paragraphs (i)(2)(i) and (i)(2)(ii) of this AD substeps and identified figures.
terminates the inspections required by
an approach or takeoff, which could
(ii) Steps not labeled as RC may be
paragraph (g) of AD 2014–20–10, deviated from using accepted methods in result in loss of airplane control at an
Amendment 39–17983 (79 FR 60331, October accordance with the operator’s maintenance altitude insufficient for recovery.
7, 2014), at the modified area only, provided or inspection program without obtaining DATES: We must receive comments on
the actions are accomplished concurrently, or approval of an AMOC, provided the RC steps, this proposed AD by February 16, 2016.
the actions specified in paragraph (i)(2)(ii) of including substeps and identified figures, can ADDRESSES: You may send comments,
this AD are done after accomplishing the still be done as specified, and the airplane
actions specified in paragraph (i)(2)(i) of this using the procedures found in 14 CFR
can be put back in an airworthy condition.
AD. 11.43 and 11.45, by any of the following
(i) The actions specified in paragraphs (l) Related Information methods:
(g)(1) through (g)(4) of this AD on the left and (1) For more information about this AD, • Federal eRulemaking Portal: Go to
right struts are done in accordance with the contact Kevin Nguyen, Aerospace Engineer, http://www.regulations.gov. Follow the
Accomplishment Instructions of Boeing Propulsion Branch, ANM–140S, FAA, Seattle instructions for submitting comments.
Special Attention Service Bulletin 777–71– Aircraft Certification Office (ACO), 1601 Lind • Fax: 202–493–2251.
0055, Revision 1, dated April 15, 2015; and Avenue SW., Renton, WA 98057–3356; • Mail: U.S. Department of
the revision specified in paragraph (g)(5) of phone: 425–917–6501; fax: 425–917–6590;
this AD is done. Transportation, Docket Operations, M–
email: kevin.nguyen@faa.gov. 30, West Building Ground Floor, Room
(ii) A one-time general visual inspection (2) For service information identified in
for hydraulic fluid contamination (including this AD, contact Boeing Commercial
W12–140, 1200 New Jersey Avenue SE.,
contamination caused by hydraulic fluid in Airplanes, Attention: Data & Services Washington, DC 20590.
its liquid, vapor, and/or solid (coked) form) Management, P.O. Box 3707, MC 2H–65, • Hand Delivery: U.S. Department of
of the interior of the strut forward dry bay, Seattle, WA 98124–2207; telephone 206– Transportation, Docket Operations, M–
and all applicable related investigative and 544–5000, extension 1; fax 206–766–5680; 30, West Building Ground Floor, Room
corrective actions (including checking drain Internet https://www.myboeingfleet.com. You W12–140, 1200 New Jersey Avenue SE.,
lines for blockage due to hydraulic fluid may view this referenced service information
coking, and cleaning or replacing drain lines
Washington, DC, between 9 a.m. and 5
at the FAA, Transport Airplane Directorate, p.m., Monday through Friday, except
to allow drainage) are done in accordance 1601 Lind Avenue SW., Renton, WA. For
with the Accomplishment Instructions of Federal holidays.
information on the availability of this For service information identified in
Boeing Special Attention Service Bulletin material at the FAA, call 425–227–1221.
777–54–0028, Revision 1, dated December this proposed AD, contact Airbus,
10, 2013, except where Boeing Special Issued in Renton, Washington, on Airworthiness Office—EIAS, 1 Rond
Attention Service Bulletin 777–54–0028, December 21, 2015. Point Maurice Bellonte, 31707 Blagnac
Revision 1, dated December 10, 2013, Cedex, France; telephone +33 5 61 93 36
specifies to contact Boeing for repair, the Michael Kaszycki,
Acting Manager, Transport Airplane 96; fax +33 5 61 93 44 51; email
repair must be done using a method
approved in accordance with the procedures Directorate, Aircraft Certification Service. account.airworth-eas@airbus.com;
specified in paragraph (k) of this AD. [FR Doc. 2015–32852 Filed 12–30–15; 8:45 am] Internet http://www.airbus.com.
You may view this referenced service
(j) Credit for Previous Actions BILLING CODE 4910–13–P
information at the FAA, Transport
This paragraph provides credit for actions Airplane Directorate, 1601 Lind Avenue
required by paragraph (g) of this AD, if those SW., Renton, WA. For information on
actions were performed before the effective DEPARTMENT OF TRANSPORTATION
the availability of this material at the
date of this AD using Boeing Special
Attention Service Bulletin 777–71–0055, Federal Aviation Administration FAA, call 425–227–1221.
dated June 12, 2014, which is not Examining the AD Docket
incorporated by reference in this AD. 14 CFR Part 39
You may examine the AD docket on
(k) Alternative Methods of Compliance [Docket No. FAA–2015–8132; Directorate the Internet at http://
(AMOCs) Identifier 2015–NM–127–AD]
www.regulations.gov by searching for
(1) The Manager, Seattle Aircraft RIN 2120–AA64 and locating Docket No. FAA–2015–
Certification Office (ACO), FAA, has the 8132; or in person at the Docket
authority to approve AMOCs for this AD, if Airworthiness Directives; Airbus Management Facility between 9 a.m.
requested using the procedures found in 14 Airplanes
CFR 39.19. In accordance with 14 CFR 39.19, and 5 p.m., Monday through Friday,
send your request to your principal inspector AGENCY: Federal Aviation except Federal holidays. The AD docket
or local Flight Standards District Office, as Administration (FAA), DOT. contains this proposed AD, the
appropriate. If sending information directly regulatory evaluation, any comments
ACTION: Notice of proposed rulemaking
to the manager of the ACO, send it to the received, and other information. The
attention of the person identified in (NPRM). street address for the Docket Operations
paragraph (l)(1) of this AD. Information may office (telephone 800–647–5527) is in
be emailed to: 9-ANM-Seattle-ACO-AMOC- SUMMARY: We propose to adopt a new
airworthiness directive (AD) for certain the ADDRESSES section. Comments will
Requests@faa.gov.
(2) Before using any approved AMOC, Airbus Model A318, A319, A320, and be available in the AD docket shortly
notify your appropriate principal inspector, A321 series airplanes. This proposed after receipt.
or lacking a principal inspector, the manager FOR FURTHER INFORMATION CONTACT:
tkelley on DSK3SPTVN1PROD with PROPOSALS
AD was prompted by a report of cracks
of the local flight standards district office/ found during maintenance inspections Sanjay Ralhan, Aerospace Engineer,
certificate holding district office. on certain lugs of the 10VU rack side International Branch, ANM–116,
(3) For service information that contains Transport Airplane Directorate, FAA,
steps that are labeled as Required for
fittings in the cockpit. This proposed
AD would require repetitive inspections 1601 Lind Avenue SW., Renton, WA
Compliance (RC), the provisions of
paragraphs (k)(3)(i) and (k)(3)(ii) apply. for cracking of the lugs on the 10VU 98057–3356; telephone 425–227–1405;
(i) The steps labeled as RC, including rack side fittings, and repair of any fax 425–227–1149.
substeps under an RC step and any figures cracking. We are proposing this AD to SUPPLEMENTARY INFORMATION:
VerDate Sep<11>2014 16:32 Dec 30, 2015 Jkt 238001 PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 E:\FR\FM\31DEP1.SGM 31DEP1](https://thefederalregister.org/doc/80_FR_82039/page/5.svg)
Document Created: 2015-12-31 02:15:05
Document Modified: 2015-12-31 02:15:05
| 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 16, 2016. | |
| Contact | Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6501; fax: 425-917-6590; email: [email protected] | |
| FR Citation | 80 FR 81788 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
2024 Federal Register | Disclaimer | Privacy Policy
USC | CFR | eCFR