AD 81-23-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | LTSIO-360-EB | TELEDYNE CONTINENTAL MOTORS Models TSIO-360-EB, LTSIO-360-EB, TSIO-360-KB, LTSIO-360-KB, TSIO-360-GB Engines |
| engine | Continental Motors | LTSIO-360-KB | TELEDYNE CONTINENTAL MOTORS Models TSIO-360-EB, LTSIO-360-EB, TSIO-360-KB, LTSIO-360-KB, TSIO-360-GB Engines |
| engine | Continental Motors | TSIO-360-EB | TELEDYNE CONTINENTAL MOTORS Models TSIO-360-EB, LTSIO-360-EB, TSIO-360-KB, LTSIO-360-KB, TSIO-360-GB Engines |
| engine | Continental Motors | TSIO-360-GB | TELEDYNE CONTINENTAL MOTORS Models TSIO-360-EB, LTSIO-360-EB, TSIO-360-KB, LTSIO-360-KB, TSIO-360-GB Engines |
| engine | Continental Motors | TSIO-360-KB | TELEDYNE CONTINENTAL MOTORS Models TSIO-360-EB, LTSIO-360-EB, TSIO-360-KB, LTSIO-360-KB, TSIO-360-GB Engines |
Unsafe Condition
Failure of the oil filter adapter gasket due to possible intrusion of the machined alternator relief cutout into the shoulder of the oil filter adapter flange.
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Required Actions
Inspect the oil filter adapter flange at the machined alternator relief cutout per TCM Special Service Notice 10-81. Replace the adapter with a serviceable part meeting inspection criteria if the cutout intrudes into the shoulder. Record compliance in maintenance records.
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Compliance Time
prior to further flight after receipt of this letter
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Affected Aircraft
Teledyne Continental Motors Models TSIO-360-EB (S/N 311703 and 311704), LTSIO-360-EB (S/N 312685), TSIO-360-KB (S/N 315204, 315209-315259, 315262-315274, 315277, 315283, 315284, 315323), LTSIO-360-KB (S/N 314195, 314204, 314208-314274, 314276, 314277), and TSIO-360-GB (S/N 309600, 309601, 309603-309618, 309622-309627, 309629-309641, 309655)
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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