AD 2004-07-20

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 747-400 and -400D Series Airplanes

AD Number
2004-07-20
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2004-NM-01-AD
FR Citation
69 FR 17919

Applicability

TypeManufacturerModelDetails
aircraft Boeing 747-400 and -400D Airworthiness Directives; Boeing Model 747-400 and -400D Series Airplanes

Unsafe Condition

Possible interference between wire bundle W4489 and the receptacle housing of the chiller boost fan, drain tubes, and adjacent structure, which could result in damage to the wire bundle and consequent arcing and fire.

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

Required Actions

Inspect the routing configuration of wire bundle W4489. Perform investigative and corrective actions as necessary to address any identified interference.

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 747-400 and -400D 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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View Official Source ↗ Find More ADs for Boeing 747-400 and -400D

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