What was found
75-10591 FAULT CODE FOUND UPON TASK CARD 78273000, TBV POSITION SIGNAL IS OUT OF RANGE, LONG TIME FAULT, ENGINE #1. GROUNDED - YES. REMOVED & INSTALLED LPTACC VALVE #1 ENGINE PER AMM 75-22-04-400-802-F00
- Difficulty date
- March 4, 2023
- Submitted
- April 13, 2023
- Operation
- Air carrier
- Aircraft
- N564AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35103
- Aircraft time
- 59,923 hours, 17,793 cycles
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Valve
- Part number
- C249370011
- Part serial
- EM563496
- Condition
- Out Of Range
- Location
- #1 Engine
- Part time
- 43,969 hours, 12,636 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.