AD Amdt-39-9134

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 747-100 Series Airplanes

AD Number
Amdt-39-9134
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 94-NM-27-AD
FR Citation
60 FR 9613

Applicability

TypeManufacturerModelDetails
aircraft Boeing 747-100 Airworthiness Directives; Boeing Model 747-100 Series Airplanes

Unsafe Condition

Cracking of the wing front spar web above engine numbers 2 and 3 and cracked or broken fasteners in an expanded inspection area beyond the existing AD's specified zone.

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

Required Actions

Conduct repetitive inspections to detect cracks in the web and cracked or broken fasteners in the expanded area. Repair as necessary and perform optional terminating actions to stop repetitive inspections.

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 747-100 series airplanes within the scope of the existing AD's applicability

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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