Service difficulty report · Probe · Boeing 737924ER

Difficulty date
August 1, 2023
Submitted
August 2, 2023
Operation
Air carrier
Aircraft
N36472
Make and model
Boeing 737924ER
Aircraft serial
31653
Aircraft time
32,691 hours, 11,487 cycles
Part
Probe
Part number
TC29603
Part serial
YC572923A
Condition
Faulty
Location
Bottom Left S3
Part time
30,582 hours, 10,923 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

ENGINE OVERTEMPERATURE (EXCEPT STARTING) EGT OVER REDLINE, NO SU RGE/STALL ENGINE 1 PICS UPDATE PICS INFO BOTTOM LEFT S3 TEMP PROBE THAT SHOWED DASHES (NCD) PER AMM 77-21-01/ 401 SHOCK HARDNESS CJ10 AND J10 ALL TEST PASSED S3 PROBE RETURNED READINGS. TEST 5 POWER ASSURANCE CHECK REQUIRED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1405075 SN OFF 2923 FOUND J10 TO CJ10 CONNECTION LOOSE AND DISCONNECTED WITH JUST FINGER PRESSURE. PERFORMED INSPECTION AFTER ENGINE OPERATIONS ABOVE THE LIMITS AND HIGH ENGINE STRESS AMM REFERENCE: TASK 71-00-00-800-804-F00 STEP (F) 3 .CLEANED CONNECTION AND REPLACED PROBE, THERMOCO OFF 29-7721-9-9001 2923 ON 29-7721-9-9001 7842 PERFORMED TEST 5 POWER ASSURANCE CHECK OF THE NUMBER 1 ENGINE PER AMM TASK 71-00-00-700-813-F00. ALL PARAMETERS CHECKS NORMAL AT 65%, 70%, 75%.