SDR 2003UALA00523

Service difficulty report · Module · Boeing 737322

Difficulty date: June 28, 2003
Submitted: July 22, 2003
Operation: Air carrier
Aircraft: N378UA
Make and model: Boeing 737322
Aircraft serial: 24653
Aircraft time: 39,270 hours, 27,240 cycles
Engine: Ge CFM56*
System (JASC): 2780 · Leading Edge Slat Control System
Part: Module
Condition: Loose
Location: Le Flaps
Stage of operation: TO
How discovered: O
Nature of condition: J
Precautionary procedure: C

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

What was found

AIRCRAFT ABORTED TAKEOFF WHEN FORWARD PANEL L/E FLAP INTRANSIT LIGHT AND OVERHEAD PANEL L/E FLAP INTRANSIT LIGHT ILLUMINATED. TROUBLESHOOTING REVEALED THAT PIN NR 14 ON CONNECTOR D728B OF THE M229 FLAP/SLAT POSITION INDICATION MODULE WAS PUSHED BACK AND NOT LOCKED IN THE CONNECTOR, RESULTING IN AN OPEN CIRCUIT. THE PIN WAS REINSTALLED IN THE CONNECTOR AND VERIFIED TO LOCK IN PLACE. TAKEOFF WARNING TEST WAS ACCOMPLISHED AND SYSTEM OPERATED PROPERLY.