Service difficulty report · Skin · Boeing 74747UF

Difficulty date
January 21, 2011
Submitted
January 28, 2011
Operation
Air carrier
Aircraft
N412MC
Make and model
Boeing 74747UF
Aircraft serial
30559
Aircraft time
48,154 hours, 7,180 cycles
Part
Skin
Condition
Gouged
Location
Bs 1920-1940
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

DURING D02 PLUS C03 CHECK OF DATUM ACFT, GOUGE DAMAGE (1 IN LONG AND 0.003 IN WIDE) WAS FOUND ON THE FUSELAGE SKIN BETWEEN BS 1920-BS 1940 AND S-33L - S-34L.(THE SURFACE FINISH OF THE BLENDED AREA WAS INSPECTED AND VERIFIED TO BE 125 MICROINCHES OR BETTER. THE BLENDED AREA WAS ALSO INSPECTED AND VERIFIED TO BE FREE OF ANY DEFECTS IAW SOPM 20-20-02. THE PRE-EXISTING OPEN HOLES (3 PLACES) IN THE BLENDED AREA WERE HFEC INSPECTED AND VERIFIED TO BE FREE OF ANY DEFECTS IAW NDT MANUAL PART 6 51-00-00. THE FINAL REPAIR ACTION FOR THE BLENDED AREA WAS TO "FLAP PEEN" REWORKED WITH 0.06A INTENSITY IAW SRM 51-20-06.)

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