Service difficulty report · Probe · Boeing 737823

Difficulty date
April 13, 2025
Submitted
April 14, 2025
Operation
Air carrier
Aircraft
N852NN
Make and model
Boeing 737823
Aircraft serial
40581
Aircraft time
43,413 hours, 18,415 cycles
Part
Probe
Part number
TC29603ACS
Condition
Contaminated
Location
Nr 1 Engine
Stage of operation
CL
How discovered
V
Nature of condition
M, J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: ENGINE NUMBER 1 EGT IN AMBER DURING CLIMB OUT MAX TEMP SEEN WAS 935. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT SFO. CLEANED ALL CONNECTORS (AALA202504145215) J9 AND J10 HARNESS TO THE CJ9 AND CJ10 JUNCTION BOX. PER FIM 77-05 TASK 801. ADDTIONALLY, FOUND S3 INDICATION HIGH AND S4 BLANK. REPLACED S3 (AALA202504149958) AND S4 (AALA202504146002) T49.5 PROBE. PER AMM TASK77-21-01. OPERTIONAL CHECK NORMAL.