AD 93-19-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Canada Corp. | JT15D-5A | PRATT & WHITNEY CANADA Model JT15D-5A Engines |
Unsafe Condition
Deterioration of the flow divider start valve diaphragm due to high temperature can result in uncommanded engine shutdowns with the inability to restart the engine.
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Required Actions
Modify flow divider start valves (PWC Part Numbers 3037076 and 3038429) in accordance with PWC Service Bulletin JT15D-72-7371 before accumulating more than 50 hours time in service or 40 days after the effective date of this AD, whichever comes first. No further action required if engines incorporate improved valves per PWC SB JT15D-72-7372 Rev 1.
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Compliance Time
before accumulating more than 50 hours time in service after the effective date of this AD, or prior to 40 days after the effective date of this AD, whichever occurs first
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Affected Aircraft
Pratt & Whitney Canada JT15D-5A engines installed on but not limited to Cessna Model 560 (Citation V) aircraft
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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