What was found
PILOT REPORTED INCREASE IN ENGINE OIL PRESSURE AND DECREASE IN TRANSMISSION PRESSURE. UPON FURTHER INSPECTION IT WAS DISCOVERED THAT THE NEWLY INSTALLED PTO SEALS FAILED.
- Difficulty date
- December 17, 2024
- Submitted
- January 7, 2025
- Operation
- Air carrier
- Aircraft
- N401TD
- Make and model
- Bell 407
- Aircraft serial
- 54335
- Aircraft time
- 8,633 hours, 4,623 cycles
- Engine
- Allsn 250C47B
- Engine time
- 4,102 hours, 4,623 cycles
- System (JASC)
- 7261 · Turbine Engine Oil System
- Part
- Seal
- Part number
- 23079072
- Condition
- Failed
- Location
- Pto
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.