Service difficulty report · Eec · Boeing 737890

Difficulty date
December 27, 2012
Submitted
December 31, 2012
Operation
Air carrier
Aircraft
N535AS
Make and model
Boeing 737890
Aircraft serial
35200
Aircraft time
7,448 hours, 2,220 cycles
Engine
Cfmint CFM567B27
Part
Eec
Part number
2042M67P02
Part serial
FFFB0444
Condition
Faulted
Location
Nr 1 Engine
Part time
16,465 hours, 6,285 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

A/T LIM SHOWING ABOVE N1 INDICATORS AFTER SPLIT THROTTLES AND AUTO THROTTLE DISCONNECT. A/T INFLT FAULTS SHOW MANY 22-31411 AND 22-31511 EEC 1A/1B DATA INV AND THROT SPLIT 22-31525. DEUS 1 & 2 FAULT 31-68210 NO EEC-1 CH A BUSS DATA. EEC 1 & 2 SHOW NO RECENT OR FAULT HISTORY FAULTS. PERFORMED FIM 22-31 TASK 806. RANG/MEGGED OUT WIRES BETWEEN EEC 1 AND FCCA/DEUS IAW FIM AND WDM 73-24-11 PG 3. CHECKED GOOD. R & R NR 1 ENGINE EEC REF MM 73-21-60 ALL OPS CHECKED GOOD. A/T CURRENT STATUS TESTED GOOD.