Service difficulty report · Wire Harness · Boeing 737890
FAA SDR system
- Difficulty date
- May 14, 2021
- Submitted
- May 26, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 48,462 hours, 14,566 cycles
- Engine
- Cfmint CFM567B27
- Part
- Wire Harness
- Part number
- 3250435030
- Condition
- Faulted
- Location
- #1 Engine
- 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
GE DIAGNOSTICS REPORTS #1 ENGINE TREND DATA SHOWS A DELTA EGT INCREASE AND EGTHDM DECREASE. EGT INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. ACCOMPLISHED TSR, REPLACED ENG #1 J10 HARNESS REF B737-800 AMM 73-21-06-400-803-F00. ACCOMPLISHED FADEC SYSTEM TEST, OPS NML, NO FAULTS LOGGED REF AMM 73-21-00-700-802-F00. ACCOMPLISHED T495 INPUT MONITORING BEFORE TROUBLESHOOTING: S1 - 39.37 S2- 22.12 S3 - DASHES S4- 51.37 AFTER J10 HARNESS REPLACED: S1- 21.12 S2- 15.50 S3- 15.62 S4- 24.37.