Service difficulty report · Skin · Boeing 747446

Difficulty date
October 16, 2011
Submitted
October 26, 2011
Operation
Air carrier
Aircraft
N465MC
Make and model
Boeing 747446
Aircraft serial
24784
Aircraft time
76,225 hours, 14,507 cycles
Part
Skin
Condition
None
Stage of operation
IN
How discovered
9
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

THE PURPOSE OF THIS EO IS TO DOCUMENT SEVEN "DEVIATIONS" WHICH OCCURRED DURING THE MODIFICATION OF RT NOSE WHEEL AFT CORNER IAW THE REQUIREMENTS OF SB 747-53A2305 REV 2 "FUSELAGE - SKIN - NOSE WHEEL WELL AFT CORNER SKIN PANEL INSP AND MODIFICATION". SB 747-53A2305, REV 2 REQUIRES THAT OPERATORS PERFORM A DETAILED INSP FOR CRACKS AT BS 400 NEAR S-44R OF THE SKIN PANEL AND SKIN SPLICE PLATE IN THE AFT CORNERS OF THE NOSE WHEEL WELL BECAUSE OF REPORTS OF CRACKS IN THE AREA. THE PURPOSE OF THE INSP IS TO ENSURE THAT NO UNREPAIRED CRACKS EXIST IN THE AFT CORNER OF THE NOSE WHEEL WELL IN THE SKIN PANEL AND/OR THE SKIN SPLICE PLATE. (JAL COMPLETED THE REPAIR WITHOUT DEVIATIONS AND MFG APPROVED THE REPAIR AND PROVIDED AN AMOC FORM FAA 8100-9 FOR AD 2006-05-09, AD 2006-22-09, AND AD 2004-07-22 REV 1 WITH INITIAL INSP AND REPEAT INSPECTION REQUIREMENTS (SEE FIG 2).)