SDR UALA2010012800354

Service difficulty report · Structure · Boeing 747422

Difficulty date: January 28, 2010
Submitted: February 4, 2010
Operation: Air carrier
Aircraft: N180UA
Make and model: Boeing 747422
Aircraft serial: 25224
Aircraft time: 79,374 hours, 9,576 cycles
Engine: Pwa PW4056
System (JASC): 5753 · Trailing Edge Flaps
Part: Structure
Condition: Damaged
Location: Rt Wing Te Flap
Stage of operation: IN
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

FOUND THREE CRACKS AT INBD MID FLAP LE. 4" LONG, 3.5" LONG AND 2" LONG EA CAUSED BY BIRD STRIKE. SUPPLEMENTAL DATA UPDATE RH IB MIDFLAP OB LEADING EDGE REMOVED RESIN INSTALLED AT BIRDSTRIKE DAMAGE AREA. REMOVED PAINT AND DELAMINATED SKIN. ROUTED OUT CRACKS IN SKIN. FOUND BIRD HAD PENETRATED CORE AND INNER SKIN IN AREA OF DAMAGE. REMOVED L-E BULL NOSE AND GAVE TO STORES TO ROUTE TO SFO SHOP 321 R&R ROUTING TAG. INSTALLED RH INBD MID FLAP LEADING EDGE BULL NOSE.PART REPAIRED AT SFO. R&R TAG 38-06-60.