- Difficulty date
- August 20, 2021
- Submitted
- August 24, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41734
- Aircraft time
- 31,279 hours, 10,067 cycles
- Engine
- Cfmint CFM567B27E
- Part
- Switch
- Part number
- 254A115013
- Part serial
- 2596
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 15,467 hours, 4,750 cycles
- Stage of operation
- LD
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING. MASTER CAUTION OVERHEAD PSEU LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED FIM TASK 32-09 TASK 801 FOUND FAULT CODE 31-52002 MP80017 INIT MIG-2C # 40-0003313. MP80017 REF L/P 60222388 FOR "BP" DEFERRAL. 77899. R&R ENG1 SWITCH PACK ASSEMBLY (M1766) IAW B737-900 AMM TASK 76-11-07-020-802-802-F00, AMM TASK 76-11-09-400-801-F00, OPS CHECK NORMAL, OPENED & CLOSED ALL ASSOCIATED CB'S 78977.