- Difficulty date
- October 9, 2001
- Submitted
- October 26, 2001
- Operation
- Air carrier
- Aircraft
- N681UP
- Make and model
- Boeing 747121
- Aircraft serial
- 19661
- Aircraft time
- 97,510 hours, 25,124 cycles
- Part
- Sill
- Condition
- Corroded
- Location
- Fuselage
- 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 BS 1350 UPPER FWD SHEAR / BATHTUB ATTACH FITTING LWR SILL O/B SILL O/B FLANGE AFT HOLE FOUND CORROSION AFTER BOLT REMOVAL. LEFT BS 1350 UPPER FWD SHEAR / BATHTUB ATTACH FITTING LWR SILL O/B SILL O/B FLANGE AFT HOLE CORROSION CLEANED UP AFTER HOLE REAMED TO FINAL SIZE 0.812 INCH. REPAIRED CARRIED OUT AS PER HX RS R53-43-34687 ITEM C3.