- Difficulty date
- June 4, 2007
- Submitted
- June 25, 2007
- Operation
- Air carrier
- Aircraft
- N520UP
- Make and model
- Boeing 747212B
- Aircraft serial
- 21943
- Aircraft time
- 83,127 hours, 18,423 cycles
- Part
- Doubler
- Part number
- 65B01714518
- Condition
- Cracked
- 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 CABIN BS 420 S14ER FRAME DOUBLER FOUND CRACKED. (CRACK LENGTH 6 INCHES) CABIN BS 420 STR 13AR TO STR 15R FRAME ATTACH DOUBLER AND BETWEEN STR 10AR TO STR 16R FRAME ATTACH INNER CHORD & INNER ANGLE REPLACED AND INSTALLED AS PER SRM 51-10-01 PG 9 & 51-30-02.