SDR ASAA2023080644427

Service difficulty report · Eec · Boeing 737990ER

Difficulty date: August 6, 2023
Submitted: August 9, 2023
Operation: Air carrier
Aircraft: N468AS
Make and model: Boeing 737990ER
Aircraft serial: 41735
Aircraft time: 33,837 hours, 10,680 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Eec
Part number: 2042M67P04
Part serial: FFFB3739
Condition: Faulty
Location: #1 Engine
Part time: 33,383 hours, 10,582 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

WHILE ACCOMPLISHING T/C 78273000 FOUND #1 ENG W/ SHORT TIME FAULT #73-21281. "EEC CHANNEL IS NOT ENERGIZED W/ THE ALTERNATOR VOLTAGE.". GROUNDED - YES. (RESOLVED ON W/O: 1964385 TASKCARD: N/R-00003 ) REMOVED AND INSTALLED A NEW #1 ENG EEC REF AMM 73-21-60/401. PERFORMED POWER PLANT TEST FOR EEC CHANGE LISTED IN AMM 71-00-00800-811-F00. VERIFIED CORRECT SOFTWARE AND VERSION REF IPC 73-21-60-01A. CLEARS PLT DEFERRAL, C/N 06001468 REMOVED. SEAMC MITCH NOTIFIED.