Airworthiness Directive · Amendment 39-21402 · Fire protection
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2021-08-19. Comply with the one in force.
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.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This AD requires repetitive general visual inspections of the bilge barriers located in the forward and aft cargo compartments for disengaged or damaged decompression panels, reinstallation of disengaged but undamaged decompression panels, and replacement of damaged decompression panels. 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 unsafe condition on these products.
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.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
