AD 2005-16-11

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR Series Airplanes; Equipped With Pratt & Whitney Model JT9D-3 and -7 Series Engines

AD Number
2005-16-11
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. FAA-2005-20325
FR Citation
70 FR 47086

Applicability

TypeManufacturerModelDetails
aircraft Boeing 747-100 Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR Series Airplanes; Equipped With Pratt & Whitney Model JT9D-3 and -7 Series Engines
engine Pratt & Whitney JT9D-3 and -7 Series Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR Series Airplanes; Equipped With Pratt & Whitney Model JT9D-3 and -7 Series Engines

Unsafe Condition

Cracking of the upper surface of the aft lower spar web of the inboard and outboard struts, and the upper surface of the intermediate web bay of the aft lower spar. Missing, loose, or fractured bolts common to the aft lower spar chords and the fitting of the rear engine mount bulkhead.

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

Required Actions

Conduct repetitive inspections for cracks of the upper surface of the aft lower spar web and the intermediate web bay. Perform repetitive inspections and torque checks of the bolts common to the aft lower spar chords and the fitting of the rear engine mount bulkhead. Take corrective action if necessary.

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

Compliance Time

Within 50 flight hours 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 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR Series Airplanes equipped with Pratt & Whitney Model JT9D-3 and -7 Series Engines.

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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