SDR CALA2016012895037

Service difficulty report · Skin · Boeing 777222

Difficulty date: January 28, 2016
Submitted: January 28, 2016
Operation: Air carrier
Aircraft: N212UA
Make and model: Boeing 777222
Aircraft serial: 30218
Aircraft time: 56,895 hours, 11,914 cycles
Engine: Pwa PW4077
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
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 WING LOWER SKIN, EXTERIOR SURFACE FOUND CORROSION AT REAR SPAR, BETWEEN WS 1020 & WS 1050. LT WING LOWER SKIN EXTERIOR SURFACE CORROSION REMOVED & PROTECTED IAW SRM 51-10-02 & SRM 51-20-01. SKIN ORIGINAL THICKNESS 0.300, BLEND OUT REMAIN 0.290. HFEC INSPECTION, FLUORESCENT PENETRANT INSPECTION CARRIED OUT, NO DEFECT WAS FOUND.