What was found
DURING "M" CHECK, FOUND CRACKS IN FRAME WEB BS 420 AT S15R AND S17R. REPAIRED PER EA 67-29250 SECT I AND II SECTION III TO BE ACCOMPLISHED TO COINCIDE WITH INSPECTIONS PER SB 747-53A2265 UNTIL COMPLETION OF SECTION 41 MOD.
- Difficulty date
- May 14, 2007
- Submitted
- May 30, 2007
- Operation
- Air carrier
- Aircraft
- N639US
- Make and model
- Boeing 747251F
- Aircraft serial
- 23887
- Aircraft time
- 73,897 hours, 16,043 cycles
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Condition
- Cracked
- Location
- Bs 420
- 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.