SDR ASAA2017011319868

Service difficulty report · Probe · Boeing 737890

Difficulty date: January 13, 2017
Submitted: February 21, 2017
Operation: Air carrier
Aircraft: N585AS
Make and model: Boeing 737890
Aircraft serial: 35683
Aircraft time: 35,912 hours, 10,761 cycles
System (JASC): 7722 · Engine EGT/TIT Indicating System
Part: Probe
Part number: TC29604
Condition: Faulty
Location: Nr 2 Engine
Stage of operation: IN
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

PER TASK CARD 78273000 ECONOMIC FAULT FOUND MSG 73-31372 ON NR 2 ENGINE. GROUNDED - YES. INSPECTED AND FOUND S1 OUT OF LIMITS BY PERFORMING LINE RESISTANCE CHECK. S4 PROBE IS WITHIN LIMITS. RMVD AND INSTALLED NEW S1 T49.5 PROBE REF AMM TASK 77-21-01-400-801-F00 . ACCOMPLISHED NR 2 ENG EEC TEST REF AMM 73-21-00-700-804-F00. PROBE READINGS S1=53.80, S2=22.29, S3=24.20, S4=56.13. AFTER CLEANING S1=20.98, S2=11.02, S3=10.42,S4=24.32. THIS CLEARS L0NG TERM PLT.