- Difficulty date
- February 4, 2023
- Submitted
- February 7, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 29,085 hours, 8,988 cycles
- Part
- Switch
- Part number
- QA07995
- Part serial
- RF1010315
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 6,294 hours, 1,806 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FILTER BYPASS LH ENG. GROUNDED - YES. REF B737-900 FIM 73-05 TASK 801, FOUND FAULT MSG NBR 73-31071 FLIGHT LEG 0. REMOVED AND REPLACED #1 ENG FUEL FILTER, NO DEBRIS NOTED. REF B737-900 AMM 73-11-02-000-801-F00. REMOVED AND REPLACED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH #1 ENG. BITE CHECKED GOOD. REF AMM 73-34-01-400-801-F00. LEAK CHECKED GOOD. A/C RETURNED TO NORMAL EEC BITE CHECKED GOOD.