Service difficulty report · Eec · Boeing 737990ER

Difficulty date
July 31, 2018
Submitted
August 1, 2018
Operation
Air carrier
Aircraft
N440AS
Make and model
Boeing 737990ER
Aircraft serial
41705
Aircraft time
19,146 hours, 6,374 cycles
Part
Eec
Part number
2042M67P02
Part serial
FFFH0115
Condition
Failed
Location
Nr 2 Engine
Part time
43,559 hours, 13,604 cycles
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 FAULT MSG 74-30972 THE APL INPUT VOLTAGE FOR THE L EXCITER (IGN1) IS OUT OF RANGE. GROUNDED - YES. WHILE T/S ALSO FOUND FAULT MSG 74-30982. PERFORMED FIM 74-21 TASK 801 AND FIM 74-21 TASK 802. FOUND 115V AC AT DP0101 AND DP0202, DUE TO OCCURRENCE OF DUAL CHANNEL FAULTS FOR BOTH LT AND RT IGNITERS IN CONCURRENCE WITH APPROPRIATE VOLTAGE INTO EEC, REMOVED AND REPLACED THE NR 2 ENGINE EEC REF AMM 73-21-60/401.