- Difficulty date
- July 26, 2005
- Submitted
- August 10, 2005
- Operation
- Air carrier
- Aircraft
- N683UP
- Make and model
- Boeing 747121
- Aircraft serial
- 20353
- Aircraft time
- 87,225 hours, 21,374 cycles
- Part
- Doubler
- Condition
- Corroded
- Location
- M/D
- 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 M/D BS 1980-2000 S20-22L WINDOW FORGING MATTING SURFACE SKIN FOUND CORROSION DUE FORGING REMOVED. CORROSION BLEND OUT 0.022" X 1.5" X 3" EXCEED SRM 53-30-01 FIG 1 LIMITS. M/D BS 1983 LT WINDOW CUTOUT DOUBLER CORROSION REPAIRED AS PER HX RS R53-61-35356 & UPS ENGINEERING FILE 747-53-20276.