- Difficulty date
- April 5, 2022
- Submitted
- April 11, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35690
- Aircraft time
- 49,970 hours, 15,072 cycles
- Engine
- Cfmint CFM567B27
- Part
- None
- Part number
- 2042M67P02
- Part serial
- LMDR4499
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 53,609 hours, 16,730 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT CODE MSG # 75-20801 ON ENG #1 T25 SIGNALS DISAGREE SHORT TERM FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. REPLACED #1 EEC REF B737-800 AMM 73-21-60-400-801-F00. EEC BITE FAILED REF AMM 73-21-00-700-804-F00. SHOWS MSG 77-20861 BOTTOM LEFT EGT SIGNAL OUT OF RANGE. CLEANED LOWER LH T49.5 SENSOR & J9/J10 HARNESS CONNECTIONS REF AMM 77-21-00-140-801 & AMM 73-21-06-400-803-F00. EEC TEST PASSED. RAN #1 ENG & RE-RAN EEC TEST REF AMM 71-00-00-700-808-F00 EEC TEST PASSED.