SDR ASAA2016092918173

Service difficulty report · Engine · Boeing 737890

Difficulty date: September 29, 2016
Submitted: October 3, 2016
Operation: Air carrier
Aircraft: N588AS
Make and model: Boeing 737890
Aircraft serial: 35685
Aircraft time: 34,068 hours, 10,353 cycles
Engine: Cfmint CFM567B27
System (JASC): 7720 · Engine Temperature Indicating System
Part: Engine
Condition: Faulted
Location: Nr 1
Stage of operation: IN
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

FOUND NR 1 ENG WITH ECONOMIC FAULT 77-10841, THE TOP RIGHT EGT SIGNAL T49.5S1 IS OUT OF RANGE. ACFT GROUNDED. PERFORMED FIM 77-21 TASK 801 CHECKED NR 1 EEC RECENT FAULTS AND FAULT HISTORY, NO FAULTS FOUND. PERFORMED CLEANING OF ENGINE HARNESS AND EQUIPMENT IAW AMM 70-40-01. PERFORMED EEC TEST, EEC TEST PASS IAW AMM 73-21-00. NR 1 ENGINE BEFORE S1: 89.43 S2: 44.26 S3: 49.86 S4: 106.78. AFTER S1: 46.35 S2: 21.08 S3: 24.25 S4: 57.50.