Service difficulty report · Longeron · Boeing 747123

Difficulty date
February 2, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N671UP
Make and model
Boeing 747123
Aircraft serial
20323
Part
Longeron
Part number
65B150329
Condition
Cracked
Location
Bs 1350\1480
Stage of operation
IN
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. DUE TO CRACK AT BSTA 1480 AT OVERWING LONGERON LT SIDE. REPLACE LT OVERWING LONGERON UPPER CHORD FROM STA 1350 TO BSTA.1480 PER SB 747-53-2291. REPLACED O/W LONGERON AT STA.1350 THROUGH 1480 LT ACCORDING SB 747-53-2291 AND DWG. 624U0008 SHEETS 3 AND 4.