Service difficulty report · Eec · Boeing 737890

Difficulty date
November 7, 2011
Submitted
November 9, 2011
Operation
Air carrier
Aircraft
N594AS
Make and model
Boeing 737890
Aircraft serial
35191
Aircraft time
13,807 hours, 4,342 cycles
Engine
Cfmint CFM567B273
Part
Eec
Part number
2042M67P02
Part serial
EFFB0679
Condition
Faulty
Location
Nr 1 Engine
Part time
12,698 hours, 5,678 cycles
Stage of operation
NR
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

BOXED A/T LIM ON UPPER DISPLAY ILLUMINATED. NO OTHER LIGHTS ILLUMINATED. ACCOMP FIM 22 32 TASK 815 AND A/T BITE PER FIM 22 31 TASK 801. INFLIGHT FAULTS FOR LEG 1 HAS MAINT MSG 22 31411 EEC 1B FAILURE. ACCOMP FIM 22 31 TASK 806 AND EEC BITE PER FIM 73 00 TSK 801. RECENT FAULTS SHOWS MAINT MSG 73 21281. AN EEC CHANNEL NO ENERGIZED WITH THE ALTERNATOR VOLTAGE. ACCOMP FIM 73 27 TASK 805. CONTINUITY CHECK OF J7 AND J8 HARNESSES CHECK GOOD. REPLACED NR 1 ENG EEC REF AMM 73 21 60. OPS CHECKED GOOD. PERFORMED A/T BITE TEST REF FIM 22 31 00 810 801 NO FAULTS FOUND. GROUND VERIFICATION COMPLETE.