AD 48-27-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 149-46 | LOCKHEED Models 49 and 149 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Models 49 and 149 Aircraft |
Unsafe Condition
Failure to install fuel dump stand pipes could result in fuel overflow during flight, leading to loss of aircraft control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install fuel dump stand pipes as specified in LAC Service Bulletin 49/SB-403 and LAC Service Instruction 49/SI-12 dated September 25, 1946.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Not later than next wing change or aircraft overhaul, and in no event later than February 1, 1949.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Aircraft Corporation Models 49 (modified for 93,000 pounds takeoff and 83,000 pounds landing weights) and Model 149 (redesignated from Model 49 and modified for 100,000 pounds takeoff and 83,000 pounds landing weights).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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