AD 2008-23-09

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 727-200 and 727-200F Series Airplanes; 737-200, 737-200C, 737-300, and 737-400 Series Airplanes; 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes; 757-200, 757-200CB, and 757-200PF Series Airplanes; and 767-200 and 767-300 Series Airplanes

AD Number
2008-23-09
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2005-20836
FR Citation
73 FR 66497

Applicability

TypeManufacturerModelDetails
aircraft Boeing 727-200 and 727-200F Airworthiness Directives; Boeing Model 727-200 and 727-200F Series Airplanes; 737-200, 737-200C, 737-300, and 737-400 Series Airplanes; 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes; 757-200, 757-200CB, and 757-200PF Series Airplanes; and 767-200 and 767-300 Series Airplanes

Unsafe Condition

Insulation blankets constructed of polyethyleneteraphthalate (PET) film, ORCON Orcofilm® AN-26, may ignite and propagate a fire when exposed to ignition sources such as electrical arcing or sparking.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Replace all insulation blankets constructed of AN-26 with new insulation blankets meeting the requirements of Section 25.856(a) of Title 14 of the Code of Federal Regulations (14 CFR 25.856(a)).

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 96 months of the effective date (December 15, 2008).

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Affected Aircraft

Boeing Model 727-200 and 727-200F Series Airplanes; 737-200, 737-200C, 737-300, and 737-400 Series Airplanes; 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes; 757-200, 757-200CB, and 757-200PF Series Airplanes; and 767-200 and 767-300 Series Airplanes.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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