Service difficulty report · Probe · Boeing 737824

Difficulty date
July 18, 2017
Submitted
July 21, 2017
Operation
Air carrier
Aircraft
N73256
Make and model
Boeing 737824
Aircraft serial
30611
Aircraft time
54,092 hours, 19,396 cycles
Part
Probe
Part number
TC29603
Part serial
8663
Condition
Malfunctioned
Location
Nr 2 Egt
Part time
52,968 hours, 20,036 cycles
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

NR 2 ENGINE OVERHEAT LIGHT, EGT LIMITS EXCEEDED ON TAKE OFF. RANG WIRES FROM DP1012 CONTACTS A,B TO DP1010 CONTACTS B,U. CHECKED SECURE. CJ10 HARNESS AND SAFETY WIRED TEMP PROBE CHECKED FOR CONTINUITY, SHORTS TO EACH OTHER AND SHORTS TO GROUND RE PER AMM 77-21-01. F WDM 77-21-11, CLEANED CONTACTS AT ALL CONNECTORS. TROUBLESHOT PER FIM 77-21-00-803-F00 NO DEFECTS NOTED, ACCOMPLISHED EEC TEST PER AMM 73-21-700-804-F00, NO FAULTS FOUND, CHANGED T49.5 PROBE (T523) REF AMM TASK77-23-01-400-801-F005, INSTALLED CJ10 HARNESS AS PRECAUTION, ORIGINAL DISCREPANCY EXCEEDANCE 950+ 26 SECS WITH 970 PEAK. EEC BITE FAULT 77-20862 (T495S3) AREA B AMM 71-00-00. T/S ACCOMPLISHED FIM TASK 77-21-00 ABOVE. ENGINE POWER ASSURANCE SUCCESSFUL. EEC BITE SELF TEST PASS. FAULT MOVED FROM LEG 0 TO 1. A/C OKAY FOR SERVICE.