AD 71-09-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | TSIO-360-A | CONTINENTAL Models TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J Engines |
| engine | Continental Motors | TSIO-520-B | CONTINENTAL Models TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J Engines |
| engine | Continental Motors | TSIO-520-D | CONTINENTAL Models TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J Engines |
| engine | Continental Motors | TSIO-520-E | CONTINENTAL Models TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J Engines |
| engine | Continental Motors | TSIO-520-J | CONTINENTAL Models TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J Engines |
Unsafe Condition
Extrusion of P/N 632647 gasket and/or fuel leakage at the top edge of the variable orifice body.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 25 hours' time-in-service after the effective date, and every 100 hours' time-in-service thereafter, visually inspect the fuel injection pump for fuel leakage and/or gasket extrusion. If leakage or extrusion is found, replace P/N 632647 gasket with P/N 638223 gasket before further flight. Engines with P/N 638223 gasket and a white paint band on the aneroid housing do not require further action.
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Compliance Time
Within 25 hours' time-in-service after the effective date of this AD, and thereafter at intervals of 100 hours' time-in-service
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Affected Aircraft
Continental Motors TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E, TSIO-520-J engines with specified new and remanufactured serial number ranges as listed in the AD.
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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