Airworthiness directives › 2025-05-16
AD 2025-05-16 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737-800 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 737-800 series airplanes, certificated in any category, that have been converted to a freighter configuration using Boeing Drawing 800A0003 before April 1, 2021, and are identified as Group A in Section 5.2.1, “Effectivity,” of Boeing 737-800BCF Airworthiness Limitations, D140A006, Revision L, dated April 1, 2021. Note 1 to paragraph (c)(1): Airplanes with a 737-800BCF designation are Model 737-800 series airplanes that have been converted to a freighter configuration using Boeing Drawing 800A0003. (2) Installation of Supplemental Type Certificate (STC) ST00830SE does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST00830SE is installed, a “change in product” alternative method of compliance (AMOC) approval request is not necessary to comply with the requirements of 14 CFR 39.17.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For airplanes identified as Group 1, Configuration 2, 3, 4, or 5, or as Group 5 in Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018: At the compliance time specified in paragraph (g)(1)(i), (ii), (iii), or (iv) of this AD, whichever occurs last, perform an ultrasonic inspection of the skin under the drag link assembly in accordance with the Accomplishment Instructions, Part 2, of Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018. Do all applicable on-condition actions for the Part 2 inspection at the times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018, except where Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018, specifies contacting Boeing for repair instructions, this AD requires doing the repair using a method approved in accordance with paragraph (j) of this AD. (i) Before the airplane accumulates 17,000 total flight cycles. (ii) Within 5,000 flight cycles after July 17, 2019 (the effective date of AD 2019-11-06). (iii) Within 12 months after the effective date of this AD. (iv) Within 1,000 flight cycles after the effective date of this AD. (2) For airplanes identified as Group 1, Configuration 1, 3, or 4 in Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018: At the compliance time specified in paragraph (g)(2)(i), (ii), (iii), or (iv) of this AD, whichever occurs last, perform an ultrasonic inspection of the repair tripler under the drag link assembly in accordance with the Accomplishment Instructions, Part 6, of Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018. Do all applicable on-condition actions for the Part 6 inspection at the times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018, except where Boeing Alert Service Bulletin 737-53A1368, dated February 27, 2018, specifies contacting Boeing for repair instructions, this AD requires doing the repair using a method approved in accordance with paragraph (j) of this AD. (i) Before the airplane accumulates 30,000 total flight cycles. (ii) Within 5,000 flight cycles after July 17, 2019 (the effective date of AD 2019-11-06). (iii) Within 12 months after the effective date of this AD. (iv) Within 1,000 flight cycles after the effective date of this AD.
Unsafe condition
This AD was prompted by a determination that the compliance time for the initial ultrasonic inspection of the skin under the drag link assembly required by AD 2019-11-06 must be reduced for certain airplanes. The FAA is issuing this AD to address cracking found in the station (STA) 540 bulkhead chord and skin, which could result in the inability of a primary structural element to sustain limit load. The unsafe condition, if not addressed, could result in possible rapid decompression and loss of structural integrity of the airplane.
Affected ADs
This AD affects AD 2019-11-06, Amendment 39-19652 (84 FR 27193, June 12, 2019) (AD 2019-11-06).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1