Service difficulty report · Structure · Boeing 74747UF

Difficulty date
July 17, 2010
Submitted
July 19, 2010
Operation
Air carrier
Aircraft
N412MC
Make and model
Boeing 74747UF
Aircraft serial
30559
Aircraft time
41,720 hours, 6,200 cycles
Engine
Ge CF680
Part
Structure
Condition
Damaged
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

DURING SPECIAL CHECK (TLW); A STORM DRAGGED A MX STAND IMPACTING THE LT WING - OTBD L/E AT OLES1580.95, OLES1606.95 & OLES1625.951. DENT AT OLES 1580.95 (11.0 IN. LONG X 1.750 IN. WIDE X 0.187 IN. DEEP) REFERENCE FIG 1. EXCEEDS THE LIMITS IAW SRM 57-41-01 FIG 101 TABLE I, DETAIL III (ALLOWABLE DAMAGE). PERMANENT REPAIR ACCOMPLISHED IAW THE SRM 57-41-01 FIG 201, REPAIR 4. DENT AT OLES 1606.95 (6.0 IN. LONG X 0.750 IN. WIDE X 0.062 IN. DEEP) REF FIG 2. WITHIN THE LIMITS IAW SRM 57-41-01 FIG 101, TABLE I, DETAIL III (ALLOWABLE DAMAGE). DENT MUST BE SMOOTH AND FREE FROM SHARP CREASES, GOUGES OR CRACKS AND SHOW NO SIGN OF PULLED OR LOOSE RIVETS, REF SRM 51-10-02. HFEC INSP PERFORMED IAW NDT MANUAL PART 6, 51-00-00, FIG 4 AND/OR FIG 23 W/NIL FINDINGS. DENT AT OLES 1625.95 (6.0 IN. LONG X 1.750 IN. WIDE X 0.187 IN. DEEP) REF FIG 3. WITHIN THE LIMITS IAW SRM 57-41-01, FIG 101 TABLE I, DETAIL III (ALLOWABLE DAMAGE). DENT MUST BE SMOOTH AND FREE FROM SHARP CREASES, GOUGES OR CRACKS AND SHOW NO SIGN OF PULLED OR LOOSE RIVETS, REF SRM 51-10-02. HFEC INSP PERFORMED IAW NDT MANUAL PART 6, 51-00-00, FIG 4 AND/OR FIG 23 W/NIL FINDINGS.(THE REPAIR ACCOMPLISHED IAW PART 1 (ITEM 1) WAS PERFORMED IAW SRM 57-41-01 FIG 201, REPAIR 4; WHICH IS FAA APPROVED. NO SUPPLEMENTAL INSP ARE REQUIRED.)

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