SDR UPS06446504

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
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Damaged
Location: Bs 740
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 CUTER SKIN 1EA TOP ROW FASTENER LOCATION AT BS 764 FOUND MATERIAL LOSS APPROX 0.11" ( IE > 10% ), REF NRC NR 5997 SKIN REPAIR WORKING DETAIL 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.