Airworthiness directives › 2021-08-19
AD 2021-08-19 Airworthiness Directives; The Boeing Company Airplanes
Models named: 787-8, -9, -10. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model 787-8, -9, and -10 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
At the applicable times specified in paragraph (g)(1) or (2) of this AD: Do a general visual inspection for disengaged or damaged (torn) decompression panels of the bilge barriers located in the forward and aft cargo compartments. 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. (1) If a general visual inspection for disengaged or damaged (torn) decompression panels of the bilge barriers was done before the effective date of this AD: Do the next inspection within 4 calendar months after the most recent inspection. Repeat the inspection thereafter at intervals not to exceed 4 calendar months. (2) If a general visual inspection for disengaged or damaged (torn) decompression panels of the bilge barriers was not done before the effective date of this AD: Do the initial inspection within 30 days after the effective date of this AD. Repeat the inspection thereafter at intervals not to exceed 4 calendar months.
Unsafe condition
This AD was prompted by reports of multiple incidents of torn decompression panels being found in the bilge area and the determination that additional airplanes are subject to the unsafe condition. 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
This AD replaces AD 2021-02-19, Amendment 39-21402 (86 FR 10171, February 19, 2021) (AD 2021-02-19).
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