What was found
TURBINE UNIT WAS RECEIVED FOR LOUD NOISE DURING IDLE AND BAD VIBRATIONS. DURING OVERHAUL INSPECTION THE PT OUTER SHAFT WAS IDENTIFIED WITH A CRITICAL ISSUE, A VISIBLE CRACK IN THE COMPONENT.
- Difficulty date
- January 16, 2024
- Submitted
- January 16, 2024
- Operation
- General aviation
- Aircraft
- N812LH
- Make and model
- Doug 600N
- Aircraft serial
- RN022
- Engine
- Allsn 250C47B
- System (JASC)
- 7250 · Turbine Section
- Part
- Shaft
- Part number
- 23038136
- Part serial
- KU95713
- Condition
- Cracked
- Location
- Unknown
- Component
- Turbine · C47M
- Component part number
- 23063354
- Stage of operation
- UK
- How discovered
- V
- Nature of condition
- E, O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.