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Airworthiness directives › 2022-16-09

AD 2022-16-09 Airworthiness Directives; The Boeing Company Airplanes

2022-10-20
2022-09-15
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Airframe
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Models named: 737-8. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to The Boeing Company Model 737-8 airplanes, certificated in any category, as identified in Boeing Special Attention Requirements Bulletin 737-57-1352 RB, dated February 1, 2021.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

Within 10 years after the date of issuance of the original airworthiness certificate or the original export certificate of airworthiness, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Special Attention Requirements Bulletin 737-57-1352 RB, dated February 1, 2021, except as specified by paragraph (h) of this AD. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Special Attention Service Bulletin 737-57-1352, dated February 1, 2021, which is referred to in Boeing Special Attention Requirements Bulletin 737-57-1352 RB, dated February 1, 2021.

Unsafe condition

This AD was prompted by a report that, during production, a small number of fasteners in certain locations of the center fuel tank were cap sealed on top of a black stripe of ink with a clear overcoat. This clear overcoat is not an approved surface for sealing and can potentially compromise sealant adhesion. Compromised sealant adhesion can, over time, affect the lightning protection properties of the airplane. The FAA is issuing this AD to address compromised sealant adhesion within the center fuel tank, which, if combined with a flammable center tank ullage and an independent failure of the primary lightning protection feature, could result in ignition of fuel vapors and subsequent explosion of the fuel tank in the event of a lightning strike to that fastener.

Affected ADs

None.

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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