Service difficulty report · Spar · Boeing 747428F

Difficulty date
February 28, 2019
Submitted
March 29, 2019
Operation
Air carrier
Aircraft
N580UP
Make and model
Boeing 747428F
Aircraft serial
25632
Aircraft time
101,727 hours, 17,398 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
112U20073
Condition
Cracked
Location
Lt Wing
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

INSPECTION TYPE:D2 CRACK WAS FOUND ON FASTENER HOLE ON FRONT SPAR WEB (P/N: 112U2007-3) OF LT WING FSSI 655.72 WHEN PERFORM 747-SB-57A2357.REPAIR IAW SRID: 3-4407802419 AND EO B747-5710-71777-B.