SDR ASAA2023080444423

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: August 4, 2023
Submitted: August 7, 2023
Operation: Air carrier
Aircraft: N495AS
Make and model: Boeing 737990ER
Aircraft serial: 41728
Aircraft time: 27,667 hours, 8,632 cycles
System (JASC): 8000 · Engine Starting System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
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

#1 ENG FAULT CODE 73-30311, THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE, SHORT TIME FAULT. GROUNDED - YES. REF FIM 73-24 TASK 813, DURING INITIAL EVALUATION PERFORMED EEC TESTS IN ALL SWITCH POSITIONS FOUND NO FAULTS, OPS NORMAL. PER FIM THIS WAS AN INTERMITTENT FAULT, OK FOR CONTINUED SERVICE.