SDR UPS03440599

Service difficulty report · Rib · Boeing 747121

Difficulty date: April 12, 2003
Submitted: April 30, 2003
Operation: Air carrier
Aircraft: N681UP
Make and model: Boeing 747121
Aircraft serial: 19661
Aircraft time: 100,611 hours, 25,820 cycles
System (JASC): 5753 · Trailing Edge Flaps
Part: Rib
Part number: 65B106252
Condition: Corroded
Location: Nr 23 Flap
Stage of operation: IN
How discovered: 9
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, RT WING - NR 23 VC FLAP I/B O/B ROTARY ACTUATOR SUPPORT RIB MOUNT BOLT HOLES BORE AREA FOUND CORROSION AT HOLE NR 1 TO 8. ( VIEW FROM I/B ) BOLT HOLES CORROSION REMOVED AND INTERIM REPAIRED AS PER RS 57-41-35014 AND EO B747-5740-18687-A.