Equipment / Furnishings - Boeing Material Specification (BMS) 8-39 Urethane Foam Pads - Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Boeing 767-200, -300, -300F, and -400ER airplanes must replace or remove BMS 8-39 foam pads as specified, inspect corner seals, and replace any affected seals. Installation of BMS 8-39 foam in prohibited locations must cease. All actions must be completed by the effective date of September 20, 2022.
Summary
The Federal Aviation Administration's Airworthiness Directive 2022-13-10 addresses certain Boeing 767-200, -300, -300F, and -400ER series airplanes. It mandates the replacement and removal of Boeing Material Specification (BMS) 8-39 urethane foam pads, which have deteriorating fire-retardant properties, with Nomex felt in specified areas. The directive also requires inspection and replacement of affected corner seals and prohibits installation of BMS 8-39 foam in certain locations.
What changed
This new airworthiness directive introduces requirements to replace or remove BMS 8-39 urethane foam pads and inspect corner seals on affected Boeing 767 models. It prohibits further installation of BMS 8-39 foam in specified areas to mitigate fire safety risks. The directive is based on Boeing Special Attention Service Bulletin 767-25-0381, Revision 4.
Why it matters
The degraded BMS 8-39 urethane foam may fail to maintain adequate halon concentrations in cargo compartments, increasing the risk of fire or smoke penetration into the flight compartment. Compliance ensures continued airworthiness and safety by preventing potential loss of airplane control due to fire hazards. Operators and maintenance teams must address these risks promptly to meet regulatory safety standards.
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