SDR UALA2012092905518

Service difficulty report · Structure · Boeing 757222

Difficulty date: September 28, 2012
Submitted: October 5, 2012
Operation: Air carrier
Aircraft: N525UA
Make and model: Boeing 757222
Aircraft serial: 24978
Aircraft time: 74,972 hours, 22,673 cycles
Engine: Pwa PW2037
System (JASC): 5720 · Wing Miscellaneous Structure
Part: Structure
Condition: Corroded
Location: Lt Wing
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

LEFT UPPER WING, REMOVED CORROSION AT REAR SPAR, 69.5\ O/B OF BBL 70.5. REMOVED APROX .020\ MAT AND ALODINE AREA. CORR DID NOT GO INTO FASTENER. FASTENER OKAY. INSPECTED REWORK AREA WBL 150.5, .016 INCH MATERAL REMOVED FOR CORROSION FROM .424 INCH ORIG THICKNESS, FASTENER NOT AFFECTED, NO LAMINAR CORROSION FOUND, USING 757 NDT PART 4 51 00 00 AND AVO ESC120524-5325-1.