82 FR 25744 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 106 (June 5, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 106 (June 5, 2017)
| Page Range | 25744-25746 | |
| FR Document | 2017-11257 |
[Federal Register Volume 82, Number 106 (Monday, June 5, 2017)] [Proposed Rules] [Pages 25744-25746] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-11257] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2017-0526; Directorate Identifier 2017-NM-026-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 all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD was prompted by reports of cracking in the upper aft skin at the rear spar of the wings. This proposed AD would require repetitive inspections for cracking of the upper aft skin of the wings, and repair if necessary. We are proposing this AD to address the unsafe condition on these products. DATES: We must receive comments on this proposed AD by July 20, 2017. 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 NPRM, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740; telephone 562-797-1717; 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-2017-0526. 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-2017- 0526; 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: Payman Soltani, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office (ACO), 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5313; fax: 562-627-5210; email: [email protected]. 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 [[Page 25745]] ADDRESSES section. Include ``Docket No. FAA-2017-0526; Directorate Identifier 2017-NM-026-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 have received reports of cracking in the upper aft skin at the rear spar of the wings on Model 737-200, -200C, -300, -400, and -500 series airplanes. One operator found a crack originating from a fastener hole common to the upper aft skin and strap aft of the rear spar at wing buttock line (WBL) 187. The airplane had accumulated 49,461 flight hours and 47,718 flight cycles. A total of 73 cases of upper aft skin cracks were reported between 1993 and 2015; the cracks measured from 0.02 to 3.0 inches long. Cracks between WBL 159 and WBL 200 were found during open-hole high frequency eddy current (HFEC) inspections of a previous repair of the upper chord splice of the wing rear spar. The majority of larger cracks were found at WBL 171, 183, 187, and 200 at the end fasteners common to the straps attaching the wing trailing edge to the wing upper aft skin. This condition, if not corrected, could result in the inability of a principal structural element to sustain limit load, and consequent reduced structural integrity of the airplane. Explanation of Applicability Model 737-100, -200, and -200C series airplanes having line numbers 1 through 291 have a limit of validity (LOV) of 34,000 total flight cycles, and the actions proposed in this NPRM, as specified in Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017, would be required at a compliance time occurring after that LOV. Although operation of an airplane beyond its LOV is prohibited by 14 CFR 121.1115 and 129.115, this NPRM includes those airplanes in the applicability so that they are tracked in the event the LOV is extended in the future. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017. The service information describes procedures for repetitive surface HFEC, low frequency eddy current, and detailed inspections on airplanes with or without an external repair, for cracking of the upper aft skin from WBL 159 to WBL 220. 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 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, see this service information at http://www.regulations.gov by searching for and locating Docket No. FAA-2017- 0526. Costs of Compliance We estimate that this proposed AD affects 471 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost on U.S. Action Labor cost Parts cost Cost per product operators ---------------------------------------------------------------------------------------------------------------- Inspection....................... Up to 9 work-hours $0 Up to $765 per Up to $360,315 per x $85 per hour = inspection cycle. inspection cycle up to $765 per inspection cycle. ---------------------------------------------------------------------------------------------------------------- We have received no definitive data that would enable us to provide cost estimates for the on-condition actions specified in this proposed AD. 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: [[Page 25746]] 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-2017-0526; Directorate Identifier 2017-NM-026-AD. (a) Comments Due Date We must receive comments by July 20, 2017. (b) Affected ADs None. (c) Applicability This AD applies to all The Boeing Company Model 737-100, -200, - 200C, -300, -400, and -500 series airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 57; Wings. (e) Unsafe Condition This AD was prompted by reports of cracking in the upper aft skin at the rear spar of the wings. We are issuing this AD to detect and correct cracks in the upper aft skin of the wings, which could result in the inability of a principle structural element to sustain limit load, and consequent reduced structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) For Group 1 Airplanes: Inspections For airplanes identified as Group 1 in Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017: Within 120 days after the effective date of this AD, do an inspection for cracking of the upper aft skin of the wings, using a method approved in accordance with the procedures specified in paragraph (j) of this AD. (h) For Groups 2 and 3 Airplanes: Repetitive Inspections and Repair For Groups 2 and 3 airplanes identified in Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017: At the applicable time specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017, except as required by paragraph (i) of this AD, do the applicable inspection for cracking of the upper aft skin of the wings from wing buttock line (WBL) 159 to WBL 220, in accordance with the Work Instructions of Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017. If any cracking is found, repair before further flight, in accordance with the procedures specified in paragraph (j) of this AD. Repeat the inspection thereafter at the applicable time specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017. (i) Exceptions to the Service Information (1) Where Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017, specifies a compliance time ``after the original issue date of this service bulletin,'' paragraph (h) of this AD requires compliance within the specified compliance time after the effective date of this AD. (2) Although Boeing Alert Service Bulletin 737-57A1329, dated January 16, 2017, specifies to contact Boeing for repair instructions, and specifies that action as ``RC'' (Required for Compliance), this AD requires repair in accordance with the procedures specified in paragraph (j) of this AD. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Los Angeles 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 (k)(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) An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that has been authorized by the Manager, Los Angeles ACO, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (4) Except as required by paragraph (i)(2) of this AD: For service information that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (j)(4)(i) and (j)(4)(ii) of this AD 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. If a step or substep is labeled ``RC Exempt,'' then the RC requirement is removed from that step or substep. 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. (k) Related Information (1) For more information about this AD, contact Payman Soltani, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles ACO, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627- 5313; fax: 562-627-5210; email: [email protected]. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740; telephone 562-797-1717; 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 May 23, 2017. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017-11257 Filed 6-2-17; 8:45 am] BILLING CODE 4910-13-P
![25744 Federal Register / Vol. 82, No. 106 / Monday, June 5, 2017 / Proposed Rules
autopilot functions without automatic output certificate holding district office before ADDRESSES: You may send comments,
comparison. Aircraft known to have the operating any aircraft complying with this using the procedures found in 14 CFR
subject AHRS units installed include but are AD through an AMOC. 11.43 and 11.45, by any of the following
not limited to the following:
(h) Additional Information methods:
(1) Dornier Luftfahrt GmbH Model 228–
100, 228–101, 228–200, 228–201, 228–202, (1) Northrop Grumman LITEF GmbH • Federal eRulemaking Portal: Go to
and 228–212 airplanes; Service Bulletin No. 145130–0017–845, http://www.regulations.gov. Follow the
(2) Learjet Inc. Model 31A airplanes; Revision D, dated April 1, 2015, which is not instructions for submitting comments.
(3) Pilatus Aircraft Ltd. Model PC12, PC– incorporated by reference, contains • Fax: 202–493–2251.
12/45, and PC–12/47 airplanes; additional information about the subject of • Mail: U.S. Department of
(4) Polskie Zaklady Lotnicze Sp. z o.o. this AD. For service information identified in Transportation, Docket Operations, M–
Model PZL M28 05 airplanes; this AD, contact Northrop Grumman LITEF
GmbH, Customer Service—Commercial 30, West Building Ground Floor, Room
(5) Textron Aviation Inc. (type certificate
Avionics, Loerracher Str. 18, 79115 Freiburg, W12–140, 1200 New Jersey Avenue SE.,
previously held by Cessna Aircraft Company)
Model 560XL airplanes; Germany; telephone +49 (761) 4901–142; fax Washington, DC 20590.
(6) Bell Helicopter Textron Canada Limited +49 (761) 4901–773; email ahrs.support@ng- • Hand Delivery: Deliver to Mail
Model 407 helicopters; litef.de. You may review the referenced address above between 9 a.m. and 5
(7) Bell Helicopter Textron Inc. Model 412 service information at the FAA, Office of the p.m., Monday through Friday, except
and 412EP helicopters; and Regional Counsel, Southwest Region, 10101 Federal holidays.
(8) Sikorsky Aircraft Corporation Model S– Hillwood Pkwy, Room 6N–321, Fort Worth,
TX 76177.
For service information identified in
76A, S–76–B, and S–76C helicopters. this NPRM, contact Boeing Commercial
(2) The subject of this AD is addressed in
(b) Unsafe Condition European Aviation Safety Agency (EASA) AD Airplanes, Attention: Contractual & Data
This AD defines the unsafe condition as No. 2015–0093, dated May 27, 2015. You Services (C&DS), 2600 Westminster
the AHRS unit’s analog outputs of attitude may view the EASA AD on the Internet at Blvd., MC 110–SK57, Seal Beach, CA
and heading data freezing without detection http://www.regulations.gov in the AD Docket. 90740; telephone 562–797–1717;
or warning. This condition could result in (i) Subject Internet https://
misleading attitude and heading information, www.myboeingfleet.com. You may view
anomalous autopilot behavior, and loss of Joint Aircraft Service Component (JASC)
Code: 3420, Attitude and Directional Data this referenced service information at
control of the aircraft. the FAA, Transport Airplane
System.
(c) Affected ADs Directorate, 1601 Lind Avenue SW.,
Issued in Fort Worth, Texas, on May 19,
This AD affects AD 2010–26–09, 2017. Renton, WA. For information on the
Amendment 39–16548 (75 FR 81424, Scott A. Horn,
availability of this material at the FAA,
December 28, 2010). Accomplishing a certain call 425–227–1221. It is also available
requirement of this AD terminates the Acting Manager, Rotorcraft Directorate,
Aircraft Certification Service.
on the Internet at http://
requirements of AD 2010–26–09. www.regulations.gov by searching for
[FR Doc. 2017–11132 Filed 6–2–17; 8:45 am]
(d) Comments Due Date and locating Docket No. FAA–2017–
BILLING CODE 4910–13–P
We must receive comments by August 4, 0526.
2017. Examining the AD Docket
(e) Compliance DEPARTMENT OF TRANSPORTATION You may examine the AD docket on
You are responsible for performing each the Internet at http://
action required by this AD within the
Federal Aviation Administration
www.regulations.gov by searching for
specified compliance time unless it has and locating Docket No. FAA–2017–
already been accomplished prior to that time. 14 CFR Part 39
0526; or in person at the Docket
(f) Required Actions [Docket No. FAA–2017–0526; Directorate Management Facility between 9 a.m.
Identifier 2017–NM–026–AD] and 5 p.m., Monday through Friday,
(1) Within 25 hours time-in-service (TIS),
remove the AHRS unit from service. RIN 2120–AA64 except Federal holidays. The AD docket
(2) Removal from service of P/N 145130– contains this proposed AD, the
7100 terminates the requirements of AD Airworthiness Directives; The Boeing regulatory evaluation, any comments
2010–26–09 (75 FR 81424, December 28, Company Airplanes received, and other information. The
2010).
AGENCY: Federal Aviation street address for the Docket Office
(3) Do not install an AHRS unit P/N
145130–2000, 145130–2001, 145130–7000, Administration (FAA), DOT. (phone: 800–647–5527) is in the
145130–7001, or 145130–7100 on any ADDRESSES section. Comments will be
ACTION: Notice of proposed rulemaking
aircraft. available in the AD docket shortly after
(NPRM).
receipt.
(g) Alternative Methods of Compliance
(AMOCs) SUMMARY: We propose to adopt a new FOR FURTHER INFORMATION CONTACT:
airworthiness directive (AD) for all The Payman Soltani, Aerospace Engineer,
(1) The Manager, Boston Aircraft
Certification Office, FAA, may approve
Boeing Company Model 737–100, –200, Airframe Branch, ANM–120L, FAA, Los
AMOCs for this AD. Send your proposal to: –200C, –300, –400, and –500 series Angeles Aircraft Certification Office
Nick Rediess, Aviation Safety Engineer, airplanes. This proposed AD was (ACO), 3960 Paramount Boulevard,
Boston Aircraft Certification Office, Engine & prompted by reports of cracking in the Lakewood, CA 90712–4137; phone:
Propeller Directorate, 1200 District Avenue, upper aft skin at the rear spar of the 562–627–5313; fax: 562–627–5210;
nlaroche on DSK30NT082PROD with PROPOSALS
Burlington, Massachusetts 01803; telephone wings. This proposed AD would require email: payman.soltani@faa.gov.
(781) 238–7159; email nicholas.rediess@ repetitive inspections for cracking of the SUPPLEMENTARY INFORMATION:
faa.gov. upper aft skin of the wings, and repair
(2) For operations conducted under a 14 if necessary. We are proposing this AD Comments Invited
CFR part 119 operating certificate or under
14 CFR part 91, subpart K, we suggest that
to address the unsafe condition on these We invite you to send any written
you notify your principal inspector, or products. relevant data, views, or arguments about
lacking a principal inspector, the manager of DATES: We must receive comments on this proposed AD. Send your comments
the local flight standards district office or this proposed AD by July 20, 2017. to an address listed under the
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![25746 Federal Register / Vol. 82, No. 106 / Monday, June 5, 2017 / Proposed Rules
PART 39—AIRWORTHINESS inspection thereafter at the applicable time (k) Related Information
DIRECTIVES specified in paragraph 1.E., ‘‘Compliance,’’ of (1) For more information about this AD,
Boeing Alert Service Bulletin 737–57A1329, contact Payman Soltani, Aerospace Engineer,
■ 1. The authority citation for part 39 dated January 16, 2017. Airframe Branch, ANM–120L, FAA, Los
continues to read as follows: (i) Exceptions to the Service Information Angeles ACO, 3960 Paramount Boulevard,
Lakewood, CA 90712–4137; phone: 562–627–
Authority: 49 U.S.C. 106(g), 40113, 44701. (1) Where Boeing Alert Service Bulletin
5313; fax: 562–627–5210; email:
737–57A1329, dated January 16, 2017,
§ 39.13 [Amended] specifies a compliance time ‘‘after the payman.soltani@faa.gov.
original issue date of this service bulletin,’’ (2) For service information identified in
■ 2. The FAA amends § 39.13 by adding this AD, contact Boeing Commercial
the following new airworthiness paragraph (h) of this AD requires compliance
within the specified compliance time after Airplanes, Attention: Contractual & Data
directive (AD): the effective date of this AD. Services (C&DS), 2600 Westminster Blvd.,
The Boeing Company: Docket No. FAA– (2) Although Boeing Alert Service Bulletin MC 110–SK57, Seal Beach, CA 90740;
2017–0526; Directorate Identifier 2017– 737–57A1329, dated January 16, 2017, telephone 562–797–1717; Internet https://
NM–026–AD. specifies to contact Boeing for repair www.myboeingfleet.com. You may view this
instructions, and specifies that action as referenced service information at the FAA,
(a) Comments Due Date ‘‘RC’’ (Required for Compliance), this AD Transport Airplane Directorate, 1601 Lind
We must receive comments by July 20, requires repair in accordance with the Avenue SW., Renton, WA. For information
2017. procedures specified in paragraph (j) of this on the availability of this material at the
AD. FAA, call 425–227–1221.
(b) Affected ADs
(j) Alternative Methods of Compliance Issued in Renton, Washington, on May 23,
None. 2017.
(AMOCs)
(c) Applicability (1) The Manager, Los Angeles Aircraft Michael Kaszycki,
This AD applies to all The Boeing Certification Office (ACO), FAA, has the Acting Manager, Transport Airplane
Company Model 737–100, –200, –200C, authority to approve AMOCs for this AD, if Directorate, Aircraft Certification Service.
–300, –400, and –500 series airplanes, requested using the procedures found in 14 [FR Doc. 2017–11257 Filed 6–2–17; 8:45 am]
certificated in any category. CFR 39.19. In accordance with 14 CFR 39.19, BILLING CODE 4910–13–P
send your request to your principal inspector
(d) Subject or local Flight Standards District Office, as
Air Transport Association (ATA) of appropriate. If sending information directly
America Code 57; Wings. to the manager of the ACO, send it to the
DEPARTMENT OF TRANSPORTATION
attention of the person identified in
(e) Unsafe Condition
paragraph (k)(1) of this AD. Information may Federal Aviation Administration
This AD was prompted by reports of be emailed to: 9-ANM-LAACO-AMOC-
cracking in the upper aft skin at the rear spar Requests@faa.gov. 14 CFR Part 39
of the wings. We are issuing this AD to detect (2) Before using any approved AMOC,
and correct cracks in the upper aft skin of the notify your appropriate principal inspector, [Docket No. FAA–2017–0528; Directorate
wings, which could result in the inability of or lacking a principal inspector, the manager Identifier 2017–NM–028–AD]
a principle structural element to sustain limit of the local flight standards district office/
load, and consequent reduced structural certificate holding district office.
RIN 2120–AA64
integrity of the airplane. (3) An AMOC that provides an acceptable
level of safety may be used for any repair,
(f) Compliance
modification, or alteration required by this
Airworthiness Directives; Bombardier,
Comply with this AD within the AD if it is approved by the Boeing Inc., Airplanes
compliance times specified, unless already Commercial Airplanes Organization
done.
AGENCY: Federal Aviation
Designation Authorization (ODA) that has
been authorized by the Manager, Los Angeles Administration (FAA), DOT.
(g) For Group 1 Airplanes: Inspections ACTION: Notice of proposed rulemaking
ACO, to make those findings. To be
For airplanes identified as Group 1 in approved, the repair method, modification (NPRM).
Boeing Alert Service Bulletin 737–57A1329, deviation, or alteration deviation must meet
dated January 16, 2017: Within 120 days after the certification basis of the airplane, and the SUMMARY: We propose to adopt a new
the effective date of this AD, do an inspection approval must specifically refer to this AD. airworthiness directive (AD) for certain
for cracking of the upper aft skin of the (4) Except as required by paragraph (i)(2) Bombardier, Inc., Model CL–600–2B16
wings, using a method approved in of this AD: For service information that (CL–604 Variant) airplanes. This
accordance with the procedures specified in contains steps that are labeled as Required
paragraph (j) of this AD.
proposed AD was prompted by reports
for Compliance (RC), the provisions of
paragraphs (j)(4)(i) and (j)(4)(ii) of this AD of in-service incidents regarding the loss
(h) For Groups 2 and 3 Airplanes: Repetitive of all air data system information
apply.
Inspections and Repair provided to the flightcrew. This
(i) The steps labeled as RC, including
For Groups 2 and 3 airplanes identified in substeps under an RC step and any figures proposed AD would require revising the
Boeing Alert Service Bulletin 737–57A1329, identified in an RC step, must be done to airplane flight manual to provide
dated January 16, 2017: At the applicable comply with the AD. If a step or substep is ‘‘Unreliable Airspeed’’ procedures to the
time specified in paragraph 1.E., labeled ‘‘RC Exempt,’’ then the RC flightcrew to stabilize the airplane’s
‘‘Compliance,’’ of Boeing Alert Service requirement is removed from that step or
Bulletin 737–57A1329, dated January 16,
airspeed and attitude for continued safe
substep. An AMOC is required for any
2017, except as required by paragraph (i) of deviations to RC steps, including substeps flight and landing. We are proposing
this AD to address the unsafe condition
nlaroche on DSK30NT082PROD with PROPOSALS
this AD, do the applicable inspection for and identified figures.
cracking of the upper aft skin of the wings (ii) Steps not labeled as RC may be on these products.
from wing buttock line (WBL) 159 to WBL deviated from using accepted methods in DATES: We must receive comments on
220, in accordance with the Work accordance with the operator’s maintenance this proposed AD by July 20, 2017.
Instructions of Boeing Alert Service Bulletin or inspection program without obtaining
737–57A1329, dated January 16, 2017. If any approval of an AMOC, provided the RC steps, ADDRESSES: You may send comments,
cracking is found, repair before further flight, including substeps and identified figures, can using the procedures found in 14 CFR
in accordance with the procedures specified still be done as specified, and the airplane 11.43 and 11.45, by any of the following
in paragraph (j) of this AD. Repeat the can be put back in an airworthy condition. methods:
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Document Created: 2018-11-14 10:00:48
Document Modified: 2018-11-14 10:00:48
| 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 July 20, 2017. | |
| Contact | Payman Soltani, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office (ACO), 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5313; fax: 562-627-5210; email: [email protected] | |
| FR Citation | 82 FR 25744 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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