SDR 2003UALA00238

Service difficulty report · Fitting · Boeing 777222

Difficulty date: February 26, 2003
Submitted: March 11, 2003
Operation: Air carrier
Aircraft: N768UA
Make and model: Boeing 777222
Aircraft serial: 26919
Aircraft time: 32,477 hours, 6,298 cycles
Engine: Pwa PW4077
System (JASC): 2710 · Aileron Control System
Part: Fitting
Part number: 113W721234
Condition: Cracked
Location: Aileron
Part time: 32,477 hours, 6,298 cycles
Stage of operation: IN
How discovered: O
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

CRACKED AILERON FITTINGS ON A/C. LEFT AILERON INBOARD FITTING - CRACKED HORIZONTAL FLANGE INBOARD AND OUTBOARD SIDES. RIGHT AILERON INBOARD FITTING - CRACKED HORIZONTAL FLANGE INBOARD SIDE. SUPPLEMENTAL DATA UPDATE CRACKED FITTING DISCOVERED DURING NDT INSPECTION CALLED OUT BY ENGINEERING. CRACK LENGTHS 1/16 TO 3/8 INCHES. CAUSE UNDER INVESTIGATION BY BOEING. REPORTED IN BOECOM UAL-OAK-03-00223F. AILERONS HAVE BEEN REMOVED AND WILL BE SENT TO THE SHOP FOR FITTING REPLACEMENTS.