SDR SWAA2019020429157

Service difficulty report · Fseu · Boeing 7377H4

Difficulty date: February 2, 2019
Submitted: February 4, 2019
Operation: Air carrier
Aircraft: N452WN
Make and model: Boeing 7377H4
Aircraft serial: 29846
Aircraft time: 52,244 hours, 30,857 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Fseu
Part number: 285A12002
Part serial: D01493
Condition: Faulty
Location: E&E Bay
Stage of operation: TO
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

AIR TURNBACK, ON TAKEOFF ROLL (APPROX 90 KNOTS), RECEIVED TAKEOFF WARNING WITH LE FLAPS TRANSIT LIGHT FLICKERING ON & OFF. AFTER FLAP RETRACTION, LEADING EDGE TRANSIT LIGHT STAYED ON WITH NR 4 LE FLAP INDICATING FULL EXTENSION ASYMMETRY NOTED WITH AUTOPILOT OFF. R&R FLAP SLAT ELECTRONIC UNIT PER MM.

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