What was found
PER ASA T/C 78273000 LONG TIME FAULT ON ENGINE # 1 THE FUEL FILTER SIGNALS DISAGREE. MSG # 73-31071. GROUNDED - YES. REPLACED FUEL PRESSURE DIFFERENTIAL SWITCH REF B737-900 AMM 73-34-01.
- Difficulty date
- April 4, 2023
- Submitted
- April 6, 2023
- Operation
- Air carrier
- Aircraft
- N474AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40715
- Aircraft time
- 28,896 hours, 9,067 cycles
- System (JASC)
- 7330 · Engine Fuel Indicating System
- Part
- Pressure Switch
- Part number
- QA07995
- Part serial
- RJ104662
- Condition
- Warning Light
- Location
- #1 Engine
- Part time
- 15 hours, 4 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.