SDR ASAA2015121814331

Service difficulty report · Probe · Boeing 737890

Difficulty date: December 18, 2015
Submitted: December 22, 2015
Operation: Air carrier
Aircraft: N594AS
Make and model: Boeing 737890
Aircraft serial: 35191
Aircraft time: 29,810 hours, 9,071 cycles
Engine: Cfmint CFM567B273B3
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Condition: Faulted
Location: Nr 2 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 ACCOMPHISING T/C 78273000 FOUND ECONOMIC FAULT ENGINE NR 2 THE TOP RIGHT EGT SIGNAL IS OUT OF RANGE MSG 77-10842, FLIGHT LEG 3 FAULT MUST BE CORRECTED IN 500 HRS. ACFT GROUNDED. ACCOMPLISHED T/C 78273000, FMC FAULTS, NR 2 ENGINE HAS NO RECENT FAULTS AND NOTHING IN FAULT HISTORY. FAULT MESSAGE 77-10842 IS NO LONGER ACTIVE. EGT PROBES WERE CLEANED AND S1 & S4 WERE REPLACED. EGT T49.5 READINGS ARE S1 231-87, S2 215.37, S3 211.87, S4 234.87, ALL WITHIN LIMITS.