AD 76-05-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | United Aircraft of Canada | Auxiliary Power Unit | Airworthiness Directives; UNITED AIRCRAFT OF CANADA LIMITED: Auxiliary Power Unit Model ST6L-73 |
Unsafe Condition
Leakage of the Sundstrand Aviation 025277 series fuel pump without the part number 5002557 injector cap and screen assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect fuel pumps with less than 250 hours time in service since new using Pratt & Whitney of Canada Limited Alert Service Bulletin No. 9046. Install part number 5002557 injector cap and screen assembly per Pratt & Whitney Aircraft of Canada Limited Service Bulletin No. 9043.
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Compliance Time
Within the next twenty hours in service after the effective date of this AD for inspections, and within the next 250 hours in service after the effective date of this AD for installations.
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Affected Aircraft
United Aircraft of Canada Limited Auxiliary Power Unit Model ST6L-73 with Sundstrand Aviation 025277 series fuel 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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