Service difficulty report · Eec · Boeing 737890

Difficulty date
August 16, 2021
Submitted
August 18, 2021
Operation
Air carrier
Aircraft
N535AS
Make and model
Boeing 737890
Aircraft serial
35200
Aircraft time
38,803 hours, 11,140 cycles
Engine
Cfmint CFM567B27
Part
Eec
Part number
2042M67P02
Part serial
LMDR4499
Condition
Inoperative
Location
#1 Engine
Part time
52,148 hours, 16,325 cycles
Stage of operation
IN
How discovered
O
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 INTERROGATING FMC FOR ENGINE FAULTS FOUND CODE 73-11281 EEC CHANEL IS NOT ENERGIZED WITH THE ALTERNATOR VOLTAGE #1 ENGINE CHANEL B EEC DATA NOT AVAILABLE. GROUNDED - YES. CW FIM 73-27 TASK 805 FOUND AIRCRAFT POWER TO EEC CHANEL A & B TO BE RELIABLE. REMOVED AND REPLACED EEC REF AMM 73-21-60-000/400-801-F00. GROUND VERIFICATION FOR #1 ENGINE & EEC COMPLIED WITH. REPAIR CONFIRMATION CHECKED GOOD. PART NUMBER VERIFIED BY SEAMC DAVE.