Service difficulty report · Rib · Boeing 747123F

Difficulty date
January 6, 2004
Submitted
January 21, 2004
Operation
Air carrier
Aircraft
N677UP
Make and model
Boeing 747123F
Aircraft serial
20391
Aircraft time
91,214 hours, 22,751 cycles
Part
Rib
Part number
65B078455
Condition
Corroded
Location
Lt Wing Te Flap
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

LEFT WING L/E NR 2 VC FLAP O/B ROTARY ACTUATOR SUPPORT RIB MOUNTING HOLE NR 2, 3, 4 AND NR 1 BORE FOUND SURFACE CORRODED (LOOKING O/B). LEFT WING L/E NR 2 V/C FLAP O/B ROTARY ACTUATOR SUPPORT RIB REPLACED PER SRM 51-10-01 PG 8. NR 2 V/C FLAP REF MM 27-81-02 RIGGING AND OPERATION CHECK CARRIED OUT PER MM 27-81-00. CORROSION BLEND OUT FINAL SIZE 0.434 INCH DIA OUT HOLES NR 2 TO NR 4 OLES 1453 .25.