What was found
FOUND CRACK ON #1 ENGINE SURFACE AIR OIL COOLER LH. GROUNDED - YES. REMOVED AND REPLACED #1 ENG SACOC REF B737-9 AMM 79-21-02.
- Difficulty date
- December 18, 2022
- Submitted
- December 21, 2022
- Operation
- Air carrier
- Aircraft
- N977AK
- Make and model
- Boeing 7379
- Aircraft serial
- 43391
- Aircraft time
- 1,620 hours, 499 cycles
- Engine
- Cfmint LEAP1B28
- System (JASC)
- 7921 · Engine Oil Cooler
- Part
- Oil Cooler
- Part number
- 3640939090
- Part serial
- HF406178
- Condition
- Cracked
- Location
- Nr 1 Engine
- Part time
- 1,620 hours, 499 cycles
- 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.