What was found
CLT - Q2 CHECK - CRACK ON FRAME AT BS 500B, BETWEEN STR 20R TO STR 21R. REPAIRED FRAME AT BS 500B, BETWEEN STR 20R TO STR 21R IAW B737-400 SRM 53-00-07 AND BOEING SB 737-53A1279.
- Difficulty date
- April 22, 2011
- Submitted
- May 3, 2011
- Operation
- Air carrier
- Aircraft
- N421US
- Make and model
- Boeing 737401
- Aircraft serial
- 23988
- Aircraft time
- 60,126 hours, 40,383 cycles
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Part number
- 6546593
- Condition
- Cracked
- Location
- Fuselage
- Stage of operation
- IN
- How discovered
- E
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.