SDR 2007UALA02731

Service difficulty report · Flap · Boeing 747422

Difficulty date: July 15, 2007
Submitted: July 20, 2007
Operation: Air carrier
Aircraft: N175UA
Make and model: Boeing 747422
Aircraft serial: 24382
Aircraft time: 66,705 hours, 7,603 cycles
Engine: Pwa PW4056
System (JASC): 5753 · Trailing Edge Flaps
Part: Flap
Condition: Damaged
Location: Lt Wing
Stage of operation: NR
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

LEFT OUTBOARD MID TRAILING EDGE FLAP HAS A DEFLECTION IN ITS TRAILING EDGE OF 1 INCH OVER A LENGTH OF 38 INCHES. [08-14-07] EXISTING FLAP IS NOT DELAMINATED AND IS STRUCTURALLY SOUND. HOWEVER, REPLACED THE LT OUTBOARD FLAP PER MM-27-51-04. AIRCRAFT TEST FLOWN AFTER FLIGHT CONTROL CHANGE. TEST WENT WELL. AIRPLANE RETURNED TO SERVICE. SUSPECT OB MID-TRAILING EDGE FLAP CONTACTED BY GROUND EQUIPMENT & DEFORMED.