SDR ASAA11510523

Service difficulty report · Probe · Boeing 737890

Difficulty date: October 18, 2011
Submitted: October 18, 2011
Operation: Air carrier
Aircraft: N559AS
Make and model: Boeing 737890
Aircraft serial: 35178
Aircraft time: 19,201 hours, 5,824 cycles
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Part number: TC29604
Condition: Failed
Location: Nr 1 Engine
Stage of operation: IN
How discovered: O
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

GE DIAGNOSTICS REPORTS NR 1 ENGINE TREND DATA SHOWS A SHIFT IN DELTA CRUISE AND TAKE OFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. ACCOMPLISHED TASK 77 21 01 200 801 F00 T49.5 PROBE AND EGT SYS INSP AND FOUND T49.5 PROBE AT SECTOR S3 TO BE OUT OF LIMITS. REPLACED T49.5 PROBE AT SECTOR S3 REF MM 77 21 01/ 000 801 F00 400 801 F00 EEC BITE TEST OPS NORMAL, NO FAULTS INDICATED REF MM 73 21 00 700 804 F00.