SDR ASAA2015022710811

Service difficulty report · Probe · Boeing 737890

Difficulty date: February 27, 2015
Submitted: March 4, 2015
Operation: Air carrier
Aircraft: N533AS
Make and model: Boeing 737890
Aircraft serial: 35201
Aircraft time: 16,242 hours, 4,843 cycles
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Part number: TC29604
Condition: Faulted
Location: Nr 1 Engine
Stage of operation: IN
How discovered: 9
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

WHILE ACCOMPLISHING T/C 78273000, FOUND NR 1 ENG FAULT CODE, MSG NR: 73-31371, UPPER EGT SECTORS READING HIGH, ECONOMIC FAULT LEG 2, ESN804627. ACFT GROUNDED. NO ACTIVE OR FAULT HISTORY, INPUT PAGE SHOWS S4 20 DEGREE HIGHER THAN S1 AT STATIC. CLEANED ALL T49.5 PROBES REF MM 77-21-00, WITH ENGINE RUNNING UPPER & LOWER SECTOR NRS ARE A LOT CLOSER REF FIM 73-11, TASK 801.