AD 2008-09-20

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 747-200F, 747-300, 747-400, and 747-400D Series Airplanes

AD Number
2008-09-20
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2007-0045
FR Citation
73 FR 25997

Applicability

TypeManufacturerModelDetails
aircraft Boeing 747-200F Airworthiness Directives; Boeing Model 747-200F, 747-300, 747-400, and 747-400D Series Airplanes

Unsafe Condition

Missing fasteners from the shear clip at the stub frame to auxiliary sill joint can lead to cracking of the adjacent exterior skin and internal doubler, which may propagate and result in loss of structural integrity and sudden in-flight decompression.

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

Required Actions

Inspect the shear clip at the stub frame to auxiliary sill joint for missing fasteners. Take applicable investigative and corrective actions as necessary to ensure fasteners are installed.

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 747-200F, 747-300, 747-400, and 747-400D 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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