Service difficulty report · Eec · Boeing 737990ER

Difficulty date
August 14, 2016
Submitted
August 18, 2016
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
4,540 hours, 1,493 cycles
Engine
Cfmint CFM567B27E
Part
Eec
Part number
2042M67P04
Part serial
FFFB3882
Condition
Failed
Location
Nr 2 Engine
Part time
4,580 hours, 1,478 cycles
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

DURING NR 2 ENGINE START, WOULD NOT LIGHT OFF. FUEL FLOW WENT TO 1.2 TO .3 THEN TO 0000. IGNITION ON LEFT SIDE. ACFT GROUNDED. ACCOMPLISHED FIM TASK 74-21/801. AIRPLANE INPUT VOLTAGE FOR THE LEFT EXCITER IS OUT OF RANGE". VERIFIED 115VAC AT DP0101 PINS A TO B. REPLACED THE NR 2 ENGINE EEC. EEC INSTALLATION TESTS PASSED IAW AMM 73-21-60-400-802-F00. SUCCESSFUL GROUND VERIFICATION ACCOMPLISHED, LEFT SYSTEM IGNITION AUDIBLE TEST PASSES, IAW FIM 74-21/801.