SDR ASAA2022100240167

Service difficulty report · Sensor · Boeing 7379

Difficulty date: October 2, 2022
Submitted: October 6, 2022
Operation: Air carrier
Aircraft: N978AK
Make and model: Boeing 7379
Aircraft serial: 43348
Aircraft time: 835 hours, 251 cycles
Engine: Cfmint LEAP1B28
System (JASC): 7700 · Engine Indicating System
Part: Sensor
Condition: Intermittent
Location: Inlet Temp
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 ACCOMPLISHING AS TASK CARD 05-020-01, FOUND FAULT 73-43850, "ENGINE FAN INLET (T12) TEMPERATURE SENSOR & CALCULATED ADIRU AIR TEMPERATURE SIGNALS DO NOT AGREE" FOR ENG 1. GROUNDED - YES. ACCOMPLISHED B737-9 FIM TASK 673-21-00-810-937, MAINTENANCE MESSAGE WOULD NOT SHOW, FAULT WAS INTERMITTENT.

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