AD 2004-10-06

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 727-100 and -200; 737-100, -200, -200C, -300, -400 and -500; and 747 Series Airplanes

AD Number
2004-10-06
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2001-NM-297-AD
FR Citation
69 FR 28046

Applicability

TypeManufacturerModelDetails
aircraft Boeing 727-100 and -200 Airworthiness Directives; Boeing Model 727-100 and -200; 737-100, -200, -200C, -300, -400 and -500; and 747 Series Airplanes

Unsafe Condition

Inadequate electrical bonding between the penetration fittings of the hydraulic heat exchanger and the rear spars of the fuel tanks could cause electrical arcing and ignition of fuel vapor in the wing fuel tank, leading to a fuel tank explosion.

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

Required Actions

Prepare the electrical bonding faying surfaces for the tubing penetrations of the hydraulic heat exchanger on the forward and aft surfaces of the rear spars of the fuel tanks of the left and right wings. Perform a one-time measurement of the electrical bonding resistances. Take follow-on actions as required.

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

Compliance Time

Within 5 years after the effective date of the AD.

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

Affected Aircraft

Boeing Model 727-100 and -200; 737-100, -200, -200C, -300, -400, and -500; and 747 series airplanes (line numbers 1 through 1271 inclusive).

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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View Official Source ↗ Find More ADs for Boeing 727-100 and -200

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