AD 99-14-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747-300 and -400 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747-300 and -400 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; BOEING Model 747-300 and -400 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; BOEING Model 747-300 and -400 Series Airplanes |
Unsafe Condition
Cracking in the area surrounding the fastener holes and broken/missing fasteners on the E-42 SATCOM rack and fuselage supporting structure, which could result in SATCOM equipment falling, loss of SATCOM capabilities, passenger injury, and reduced airplane controllability.
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Required Actions
Perform repetitive inspections of the E-42 SATCOM rack and fuselage structure to detect cracking and broken/missing fasteners, repair as necessary, and report initial inspection results to the manufacturer. Inspections must occur every 3,000 flight cycles.
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Compliance Time
Initial inspections for Group 1 airplanes within 30 days after July 14, 1999; Groups 2, 3, and 4 within 90 days after July 14, 1999.
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Affected Aircraft
Boeing Model 747-300 and -400 series airplanes equipped with a Boeing-installed E-42 SATCOM rack.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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