What was found
STA 400 STR 8-9L HAS CRACK. INSTALLED DOUBLER PER TR 53-10-20E, DEFECT SIZE: .5 INCH.
- 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
- 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.