Service difficulty report · Skin · Boeing 747121

Difficulty date
July 28, 2005
Submitted
August 15, 2005
Operation
Air carrier
Aircraft
N683UP
Make and model
Boeing 747121
Aircraft serial
20353
Aircraft time
87,225 hours, 21,374 cycles
Part
Skin
Condition
Cracked
Location
Fx
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 S19R AT BS 388 TOP ROW FASTENER ROW 1EA FASTENER HOLE FOUND CRACK AT OUTER SKIN RUNNING FWD & AFT APPROX 0.030 INCH. FX SKIN BS 383 TO BS 399 STR 19R AREA OVERLAPPING SKIN REPAIRED WITH ZERO TIMING AT CRITICAL ROW FASTENERS AS PER SRM 53-30-03 FIG 17 REF NRC 5902 FOR DETAIL. PER MPI P18050 - LFEC INTIAL INSP AT 15000 FC & REPEAT AT 1500 FC THEREAFTER.