Airworthiness directives › 2021-02-19
AD 2021-02-19 Airworthiness Directives; The Boeing Company Airplanes
Models named: 787-8, 787-9, 787-10. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes identified in paragraphs (c)(1) through (3) of this AD, certificated in any category. (1) Model 787-8 airplanes equipped with bilge assemblies with decompression panels having part number (p/n) C412707-107, C412705-117, C412705-119, or C412705-121. (2) Model 787-9 airplanes equipped with bilge assemblies with decompression panels having p/n C419701-123, C419701-125, C419701-127, or C419701-129. (3) Model 787-10 airplanes equipped with bilge assemblies with decompression panels having p/n 852Z0151-100, 852Z0153-101, or 852Z0156-103.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 30 days after the effective date of this AD, do a general visual inspection of the bilge barriers located in the forward and aft cargo compartments for disengaged or damaged (torn) decompression panels. If any disengaged but undamaged panel is found: Before further flight, reinstall the panel. If any damaged panel is found: Before further flight, replace the panel with a new or serviceable panel. Reinstallations and replacements must be done in accordance with the operator's maintenance or inspection program, as applicable. Repeat the inspections thereafter at intervals not to exceed 120 days.
Unsafe condition
This AD was prompted by reports of multiple incidents of torn decompression panels being found in the bilge area. The FAA is issuing this AD to address the possibility of leakage in the bilge area, which could, in the event of a cargo fire, result in insufficient Halon concentrations to adequately control the fire. This condition, if not addressed, could result in the loss of continued safe flight and landing of the airplane.
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