AD 59-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Aeronautics Company | 1649A-98 | LOCKHEED Model 1649A Aircraft |
Unsafe Condition
Explosion of a wing tank due to the presence of an explosive mixture in the tanks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove static wicks on inboard wings adjacent to tank vents; install temporary placard at engineer's station specifying fuel usage restrictions; install P/N 634014-1 or equivalent flame arrestors in tank vent outlets. After flame arrestor installation, the placard requirement may be disregarded.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required on items (1) and (2) by October 15, 1959; compliance required on item (3) by December 1, 1959.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Model 1649A Aircraft, all serial numbers.
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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