AD 86-19-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell International Inc. | T5508D | AVCO LYCOMING Model T5508D Engines |
Unsafe Condition
Failure of the first stage turbine disk that can cause an uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the first turbine rotor assembly using visual and fluorescent penetrant methods within 50 hours time in service after the AD's effective date. Replace bolts P/N 2-100-079-05 and locking plates P/N 2-100-078-01 during the inspection. Remove and replace turbine disks showing fretting or cracks before further flight. Report inspection results to the specified FAA office within 30 days.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 50 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Avco Lycoming model T5508D turboshaft engines.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.