SDR AALA201707119005

Service difficulty report · Warning System · Boeing 737823

Difficulty date: July 9, 2017
Submitted: July 12, 2017
Operation: Air carrier
Aircraft: N818NN
Make and model: Boeing 737823
Aircraft serial: 30910
Aircraft time: 24,205 hours, 9,527 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: AP
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. FLAP ASYMMETRY EXTENDING FLAPS TO 1 DURING APPROACH. FLAP INDICATOR WENT BACK TO UP AFTER LANDING. ACCOMPLISHED FIM 27-59-00-810-803 FOR FLAP SKEW 3 FAULT AND FLAP/SLAT ELECTRONICS UNIT BITE TEST PER FIM 27-51-00-810-801. FAULT COULD NOT BE DUPLICATED. OPERATIONAL CHECK GOOD.