SDR ASAA2022120341035

Service difficulty report · Fault Code · Boeing 737990ER

Difficulty date: December 3, 2022
Submitted: December 7, 2022
Operation: Air carrier
Aircraft: N440AS
Make and model: Boeing 737990ER
Aircraft serial: 41705
Aircraft time: 34,231 hours, 10,840 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Fault Code
Condition: False Indication
Location: Nr 1 Engine
Stage of operation: IN
How discovered: V
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 PERFORMING T/C 78273000, FOUND A SHORT TIME FAULT 75-10801 ON NR 1 ENG, T25 SIGNALS DISAGREE GROUNDED - YES. PREFORMED #1 ENG EEC BITE TEST RECENT FAULTS NO FAULTS NOTED IAW AMM 73-21-00-740-803-F00 T-25 SENSORS READ A-16, B-16,60 HARNESS AND SENSOR RESISTANCE CHECK WITHIN LIMITS IAW FIM 75-33 TASK 805 STEP F5.