- Difficulty date
- November 13, 2021
- Submitted
- November 16, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737900ER
- Aircraft serial
- 41732
- Aircraft time
- 32,908 hours, 10,486 cycles
- Part
- Switch
- Part number
- QA07995
- Part serial
- RZ38386
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 15,990 hours, 5,476 cycles
- Stage of operation
- IN
- 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
LH FUEL FILTER BYPASSED ILLUMINATED. GROUNDED - YES. INSPECTED HARNESS AND CONNECTOR REF B737-900 SSM 73-31-11-101, NO DEFECT NOTED. REMOVED AND REPLACED FUEL FILTER DIFFERENTIAL SWITCH REF B737-900 AMM 73-34-01. SWITCH OPS CHECKS GOOD. LEAK CHECK OPS CHECKS GOOD.