Service difficulty report · Eec · Boeing 737990ER

Difficulty date
February 16, 2023
Submitted
February 20, 2023
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
25,379 hours, 7,959 cycles
Part
Eec
Part number
1853M33P06
Part serial
EMDN9572
Condition
Faulty
Location
#1 Engine
Part time
21,457 hours, 6,305 cycles
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

NO LIGHT OFF ON #1 ENGINE USING IGN R. GROUNDED - YES. REMOVED & REPLACED #1 ENG EEC, CLOSED 4 C/B, PERFORMED ALL INSTALLATION TESTS PASSED REF B737-900 AMM 73-21-60/401.