AD 2009-07-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-300 | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
Unsafe Condition
Fatigue cracking in the fuselage skin due to cabin pressurization, caused by wear damage and cracks found under the blade seals of the nose cap of the dorsal fin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for chafing, cracks, or abrasion in the fuselage skin and abrasion-resistant coating at the dorsal fin landing. Inspect for damage to the dorsal fin seals, attach clip, and seal retainers. Perform other specified and corrective actions as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date (May 14, 2009).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 737-300, -400, and -500 series airplanes.
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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