SDR UIEA2010062500046

Service difficulty report · Skin · Boeing 7472D7B

Difficulty date: June 25, 2010
Submitted: June 29, 2010
Operation: Air carrier
Aircraft: N523MC
Make and model: Boeing 7472D7B
Aircraft serial: 21782
Aircraft time: 100,704 hours, 20,573 cycles
Engine: Ge CF650*
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Part number: 65B07659571
Condition: Corroded
Location: Bs 460 S41-42l
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 C-CHECK, A BULGE WAS DETECTED IN AN EXISTING REPAIR DOUBLER ON SKIN AT BS 460 AND S41-42L. DAMAGED REPAIR DOUBLER WAS REMOVED AND SUBSEQUENT DISCOVERED DRILL STARTS IN THE SKIN WERE TRIMMED OUT. THE DISCREPANT AREAS WERE THEN REPAIRED IAW NRC 0011 AND SRM 53-30-03, FIG 1, SHEET 8, DETAIL III FIG 1.

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