SDR 97UAL900441

Service difficulty report · Indicator · Boeing 737322

Difficulty date: June 13, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N308UA
Make and model: Boeing 737322
Aircraft serial: 23669
Engine: Ge CFM56*
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Indicator
Part number: 1812996
Condition: Malfunctioned
Location: Te Flaps
Stage of operation: LD
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

PER CREW, AFTER EXTENDING FLAPS TO 5 DEGREES, FLAPS LOCKED OUT. UNABLE TO MOVE UP OR DOWN. CYCLING TRAILING EDGE FLAP CIRCUIT BREAKER, NO HELP. NEEDLES ARE MATCHED. *S/D* THE TRAILING EDGE FLAP POSITION INDICATOR WAS DETERMINED TO BE THE CAUSE OF THE DISCREPANCY. THE INDICATOR WAS REMOVED AND REPLACED ON JUNE 13, 1997. THE TRAILING EDGE FLAP SYSTEM WAS TESTED AND NO PROBLEMS WERE NOTED.