AD 95-12-26
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747SP Series | Airworthiness Directives; Boeing Model 747SP Series Airplanes |
Unsafe Condition
Cracking in the web of the wing front spar over engine numbers 2 and 3 can allow fuel leakage onto an engine and a resultant fire.
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Required Actions
Perform visual and ultrasonic inspections between front spar stations 628 and 675, with repeat inspections every 1,000 landings. For airplanes without the terminating modification, inspections must be done within 6 months after September 21, 1990, or prior to 4,000 total landings. The terminating modification per Boeing Alert Service Bulletin 747-57A2259 (Revision 2) may be installed to terminate repetitive inspections.
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Compliance Time
Within the next 6 months after September 21, 1990, or prior to the accumulation of 4,000 total landings on the airplane, or within 6 months after the effective date of this AD, whichever occurs later.
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Affected Aircraft
Boeing Model 747SP series airplanes with variable numbers RG001 through RG142 inclusive, and RG171 through RG222 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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