SDR UPS04442218

Service difficulty report · Rib · Boeing 747121

Difficulty date: March 29, 2004
Submitted: April 21, 2004
Operation: Air carrier
Aircraft: N683UP
Make and model: Boeing 747121
Aircraft serial: 20353
Aircraft time: 84,505 hours, 20,783 cycles
System (JASC): 5753 · Trailing Edge Flaps
Part: Rib
Part number: 65B1014011
Condition: Corroded
Location: Nr 7 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

INSPECTION TYPE:C LEFT WING - NR 7 VC FLAP O/B ARM I/B RIB ROTARY ACTUATOR NR 2, 3, 4, 5, 7 BOLT HOLES CORRODED (LOOKS O/B, COUNTS CLOCKWISE FROM TOP). DUE CORROSION BLEND OUT EXCEED MAX DIA 0.371 INCH, LEFT WING NR 7 VC FLAP OLES 1015 O/B ARM I/B RIB REPLACED AS PER SRM 51-10-01 PG 8, VC FLAP R & I PER MM 27-81-02, RIGGING & OPERATION CHECK C/OUT PER MM 27-81-00, BUSHING FABRICATED & INSTALLED.