Service difficulty report · Skin · Boeing 7472D7B

Difficulty date
April 27, 2010
Submitted
May 5, 2010
Operation
Air carrier
Aircraft
N524MC
Make and model
Boeing 7472D7B
Aircraft serial
21784
Aircraft time
101,810 hours, 21,118 cycles
Engine
Ge CF650E2
Part
Skin
Condition
Corroded
Location
Rt 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

THIS EO DOCUMENTS A MAJOR REPAIR. DURING C-CHECK, CORROSION WAS DETECTED COMMON TO RT WING LOWER SKIN WS1285 - WS1320 (REF FIG 1). THE CORROSION WAS BLENDED OUT IAW THE SRM 51-10-01/02 WITHIN LIMITS IAW SRM 57-30-01 FIGURE 2 (SHEET 7); THE FLANGE WAS BLENDED TO MINIMUM THICKNESS. REMAINING MATERIAL THICKNESS MEASUREMENT IAW (REF. FIGURE 1). NOTE: THIS REPAIR IS CLASSIFIED AS: LEVEL 1 CORROSION IAW GMM 5.8.1 (CPCP).PART 1 OF THIS EO ACCOMPLISHES A PERMANENT REPAIR OF THE RT WING LOWER SKIN WS1285 - WS1320 IAW IAI NRC264.

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