AD 2009-06-20

final rule
Data completeness: 80%

Airworthiness Directives; Boeing Model 757-200, 757-200PF, and 757-300 Series Airplanes

AD Number
2009-06-20
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2008-0846
FR Citation
74 FR 12236

Applicability

TypeManufacturerModelDetails
aircraft Boeing 757-200 Airworthiness Directives; Boeing Model 757-200, 757-200PF, and 757-300 Series Airplanes

Unsafe Condition

The center fuel tank densitometer may overheat and become a potential ignition source inside the fuel tank, which, in combination with flammable fuel vapors, could result in a center fuel tank explosion and consequent loss of the airplane.

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Required Actions

Measure the electrical bond resistance at certain stations and perform any applicable repair. Install support brackets for the hot short protector and new support clamps for wire bundles. Install the equipment of the hot short protector. Modify an existing wire bundle and install a new wire bundle. Revise the Airworthiness Limitations section of the Instructions for Continued Airworthiness.

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Compliance Time

Before further flight

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Affected Aircraft

Boeing Model 757-200, 757-200PF, and 757-300 series airplanes.

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Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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2009-12-03

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Airworthiness Directives; Boeing Model 757-200, -200CB, and -300 Series Airplanes

Unsafe Condition: could result in a short circuit and possible fire in the mix bay or smoke in the main cabin.

Effective: Jul 16, 2009 Category: aircraft

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