SDR AALA201903119020

Service difficulty report · Flap System · Boeing 737823

Difficulty date: March 10, 2019
Submitted: March 11, 2019
Operation: Air carrier
Aircraft: N809NN
Make and model: Boeing 737823
Aircraft serial: 33519
Aircraft time: 30,139 hours, 11,972 cycles
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Flap System
Condition: Malfunctioned
Stage of operation: AP
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

ON APPROACH, THE CREW REPORTED A FLAPS ISSUE. TRAILING EDGE FLAPS WOULD NOT EXTEND AND INDICATED AN ASYMMETRY INDICATION. LEADING EDGE FLAPS EXTENDED VIA ALTERNATE FLAP EXTENSION. AMBER LEADING EDGE FLAP TRANSIT LIGHT ILLUMINATED. AN EMERGENCY WAS DECLARED AND LANDED WITHOUT FUTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. MAINTENANCE ACCOMPLISHED FIM 27-59-00-810-803, INSPECTED THE MECHANISM AND SUPPORT WHILE OPERATING TRAILING EDGE FLAPS, NO FAULTS NOTED.