AD Amdt-39-10786
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Fatigue cracking of the upper segment of the bulkhead web could result in rapid depressurization of the airplane and consequent reduced controllability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Continue certain repetitive inspections for damage or cracking of the aft pressure bulkhead and repair if necessary. Remove certain repetitive inspections for cracking of the bulkhead web to Y-ring lap joint area but retain the initial inspection. Add a one-time inspection from the forward side of the bulkhead to detect fatigue cracking in the upper segment and perform corrective actions if needed.
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 series airplanes subject to the existing AD requiring repetitive inspections for the aft pressure bulkhead.
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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