Service difficulty report · Skin · Boeing 747422

Difficulty date
January 3, 2015
Submitted
January 6, 2015
Operation
Air carrier
Aircraft
N178UA
Make and model
Boeing 747422
Aircraft serial
24385
Aircraft time
99,575 hours, 11,839 cycles
Part
Skin
Condition
Damaged
Location
Fuselage
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

BS 1780 - 1800 STRINGER 36 - 37R SKIN REPAIRED IAW SRM 53-00-01 FIG 201 REPAIR 14 REV 91. THIS IS A CATEGORY B REPAIR & THE CRITICAL ROW OF FASTENERS WERE NOT ZERO TIMED. INSPECTION REQUIREMENTS TO BEGIN AT 15000 PTC SINCE AC DELIVERY, REPEAT INSPECTION TO BE ACCOMPLISHED AT 6000 CYCLE INTERVALS.