Service difficulty report · Skin · Boeing 747121

Difficulty date
March 10, 2006
Submitted
March 24, 2006
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
106,939 hours, 27,146 cycles
Part
Skin
Condition
Damaged
Location
Bs 750
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

INSPECTION TYPE:C FX SKIN LAP S39L OUTER SKIN 1EA TOP ROW FASTENER LOCATION AT BS 746 FOUND MATERIAL LOSS APPROX 0.010" ( IE > 10% ) FX SKIN, OVERLAPPING SKIN REPAIRED AT BS 740-770 S38L - 39L AREA AS PER SRM 53-30-03 FIG 48 WITHOUT ZERO TIMING AT CRITICAL ROW FASTENER SUBSEQUENT INSP ARE NECESSARY FOR CATEGORY B REPAIR REFER TO TABLE II INTERNAL HFEC AT 6000 CYCLE IS RECOMMENDED.