SDR SWAA2025102727936

Service difficulty report · Sensor · Boeing 7377H4

Difficulty date: October 23, 2025
Submitted: October 27, 2025
Operation: Air carrier
Aircraft: N263WN
Make and model: Boeing 7377H4
Aircraft serial: 32520
Aircraft time: 58,071 hours, 34,958 cycles
System (JASC): 2781 · Leading Edge Slat Position Indicating System
Part: Sensor
Condition: Faulty
Location: Zone 500 K Flaps
Stage of operation: AP
How discovered: O
Nature of condition: N
Precautionary procedure: A

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

What was found

LE FLAPS TRANSIT AT FLAPS 10 AND BEYOND. ALL LE DEVICES APPEARED EXTENDED; NO ASYMMETRY WAS DETECTED NOR ANY SKEW. PERFORMED BYTE CHECK, FOUND FAULT 27-81215. SLAT 8 INBD SENSOR FAULTY PER FIM 27-88 TASK 804. R AND R S8 INBD SENSOR PER AMM 27-88-11. OPS CHK GOOD.

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