What was found
FOUND CRACK STA 440 RT SIDE FRAME 1" BELOW TOP PSU ATTACH POINT. TRIMMED OUT FRAME, INSTALLED REPAIR DOUBLERS AND FILLERS PER TR 53-10-20E, DEFECT SIZE: 1/4" (2 EA).
- Difficulty date
- April 18, 2007
- Submitted
- April 18, 2007
- Operation
- Air carrier
- Aircraft
- N421US
- Make and model
- Boeing 737401
- Aircraft serial
- 23988
- Aircraft time
- 49,912 hours, 49,912 cycles
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Condition
- Cracked
- Location
- Bs 440
- 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.