AD 55-26-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Thompson Products, Inc. | Fuel Pumps | Airworthiness Directives; THOMPSON ENGINE DRIVE FUEL PUMPS: Applies to All Thompson TF-1100-2 and TF-1100-M2 Pumps |
Unsafe Condition
TF-1100 fuel pump failure resulting from excessive drive pin wear
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove pump from certificated airplanes and replace with Thompson TF-1900 pump having larger diameter drive pin not later than August 1, 1956. Until then, replace the drive pin (Thompson Part No. TF-1191) at each 100-hour aircraft inspection and inspect the rotor for excessive elongation, replacing it if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than August 1, 1956
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Affected Aircraft
All Thompson TF-1100-2 and TF-1100-M2 Pumps
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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