SDR ASAA2019062829879

Service difficulty report · Unknown · Boeing 737890

Difficulty date: June 28, 2019
Submitted: July 1, 2019
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 41,649 hours, 12,428 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Unknown
Condition: Malfunctioned
Location: Nr 1 Engine
Stage of operation: IN
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

WHILE PERFORMING T/C 7273000, FOUND FAULT 73-11271. "THE ALTERNATOR VOLTAGE TO THE EEC IS OUT OF RANGE". SHORT TIME FAULT #1 ENGINE. GROUNDED - YES. PERFORMED #1 EEC BITE TEST. NO RECENT FAULTS OR FAULT HISTORY. ACCOMPLISHED EEC ALTERNATOR RESISTANCE CHECKS. WIRING CHECKS GOOD. REPAIR CONFIRMATION AND GROUND VERIFICATION REQUIRED. REF FIM 73-27 TASK 804. PERFORMED EEC BITE CHECK ENGINE RUN. OPS CHECK IS GOOD. NO FAULTS NOTED AT THIS TIME. REF AMM 71-00-00.