What was found
RIGHT ENGINE RPM SPOOLED DOWN IN FLIGHT. ENGINE WAS SHUTDOWN. SUBSEQUENT INSPECTION FOUND THAT TACH GENERATOR DRIVE SHAFT WAS SPRIPPED
- Difficulty date
- May 13, 2025
- Submitted
- May 14, 2025
- Operation
- Air carrier
- Aircraft
- N391FL
- Make and model
- Cvac STC3405800
- Aircraft serial
- 278
- Aircraft time
- 33,946 hours, 24,024 cycles
- Engine
- Allsn 501D22
- Engine time
- 11,163 hours, 7,532 cycles
- Propeller
- Hamstd 54H60
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Tach Generator
- Part number
- 32164007
- Part serial
- 39575
- Condition
- Stripped
- Location
- Zone 400
- Stage of operation
- AP
- How discovered
- O
- Nature of condition
- R
- Precautionary procedure
- E
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.