What was found
HATS WO 176998 NR00522, WO 211916 HEAVY CHECK HATS/MAJOR REPAIR. LEFT ENGINE UPPER FIREWALL HAS CRACK AT APPROXIMATELY AREA 3. CORRECTIVE ACTION: REPAIRED PER SRAS ES_0120973_01 16585 ISSUE B, DATED 8/26/2020.
- Difficulty date
- June 2, 2020
- Submitted
- October 13, 2020
- Operation
- Air carrier
- Aircraft
- N805HC
- Make and model
- Aerosp ATR42500
- Aircraft serial
- 625
- Aircraft time
- 25,932 hours, 35,404 cycles
- System (JASC)
- 5412 · Nacelle/Pylon, Bulkhead/Firewall
- Part
- Firewall
- Part number
- S5421502000400
- Condition
- Cracked
- Location
- Left
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.