Service difficulty report · Skin · Boeing 777222

Difficulty date
July 17, 2011
Submitted
July 22, 2011
Operation
Air carrier
Aircraft
N781UA
Make and model
Boeing 777222
Aircraft serial
26945
Aircraft time
61,492 hours, 10,930 cycles
Engine
Pwa PW4077
Part
Skin
Condition
Gouged
Location
Fuselage
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 2 GOUGES LOCATED APPROX 8FT FWD AND 10FT LEFT OF LOWER TCAS ANTENNA STATION 529, AND 48L. FOUND 1ST GOUGE APPROX 1.0" LONG AND .020" DEEP WITHIN A SHALLOW DENT OF 3.O" BY 4.0". THE 2ND GOUGE IS APPROX 0.75" LONG AND .003" DEEP. BLENDED BOTH GOUGES PER SRM. 1ST GOUGE MATERIAL REMOVED TO 0.25T (ALLOWABLE MAX LIMIT IS 0.15T). 2ND GOUGE REPAIRED PER SRM. ACP ALODINE TREATMENT. ACFT OK SERVICE FOR 50T PER SRM. PERFORMED HFEC ON EXTERIOR SKIN IN AND AROUND GOUGES, NO CRACKS NOTED. TREATED WITH ALODINE AND PRIMED PER EVA EVA-81055. MUST HAVE DETAILED VISUAL OF SKIN AREA AND UNDERLYING STRUCTURE EXTERNAL AND INTERNAL AND HFEC ACCOMPLISHED AT EVERY A CHECK STARTING WITH A07.