AD 2006-12-26

final rule
Data completeness: 80%

Airworthiness Directives; Boeing Model 777-200, -300, and -300ER Series Airplanes

AD Number
2006-12-26
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. FAA-2006-24173
FR Citation
71 FR 34808

Applicability

TypeManufacturerModelDetails
aircraft Boeing 777-200 Airworthiness Directives; Boeing Model 777-200, -300, and -300ER Series Airplanes

Unsafe Condition

Arcing or sparking during a lightning strike at the interface between the bulkhead fittings of the engine fuel feed tube and the front spar inside the fuel tank could provide a potential ignition source inside the fuel tank, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.

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

Required Actions

Inspect the first bonding jumper aft of the bulkhead fitting to detect damage or failure and determine the mechanical integrity of its electrical bonding path, and repair if necessary. Measure the bonding resistance between the fitting for the fuel feed tube and the front spar in the left and right main fuel tanks, and repair the bonding if necessary. Apply additional sealant to completely cover the bulkhead fittings inside the fuel tanks.

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

Compliance Time

Before further flight

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

Affected Aircraft

Boeing Model 777-200, -300, and -300ER series airplanes.

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

Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Boeing 777-200

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