- Difficulty date
- January 3, 2006
- Submitted
- January 13, 2006
- Operation
- Air carrier
- Aircraft
- N520UP
- Make and model
- Boeing 747212B
- Aircraft serial
- 21943
- Aircraft time
- 80,484 hours, 17,793 cycles
- Part
- Floorbeam
- Condition
- Corroded
- Location
- Bs 360
- 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 COCKPIT BS 360 LBL 12" - LBL 34" FLOORBEAM UPPER CHORD FOUND CORROSION. CORROSION BLEND OUT 0.065" BY 2" BY 3" EXCEED SRM 53-10-01 FIG 1 LIMITS, COCKPIT BS 360 LBL 4" TO LBL 42" FLOORBEAM UPPER CHORD REPAIRED IAW SRM 53-10-07 FIG 23.