SDR ASAA2015052211837

Service difficulty report · Engine · Boeing 737890

Difficulty date: May 22, 2015
Submitted: May 26, 2015
Operation: Air carrier
Aircraft: N560AS
Make and model: Boeing 737890
Aircraft serial: 35179
Aircraft time: 33,632 hours, 10,213 cycles
Engine: Cfmint CFM567B27
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Faulted
Location: Nr 1
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 CONDUCTING WO 298788, TC 78273000, MSG 73-21371 "UPPER EGT SECTORS READING" ON ENGINE 1. ECONOMIC FAULT. MUST BE CORRECTED IN 500FLT HRS. ACFT GROUNDED. ACCOMPLISHED EEC TEST, EEC TEST PASSED, NO EEC FAULTS. ALSO ACCOMPLISH EEC INPUT MONITORING FOR EGT SENSORS READINGS. AT THIS TIME READINGS ARE T49.5S1= 36.50, S2= 20.50, S3= 19.37, AND S4= 48.87. ALL NUMBERS ARE WITHIN THE LIMITS OF EACH OTHER. REF MM 77-21-00-839-006, STEP 8 AND 73-21-00-700-804.