What was found
NR 7 RIB OF LEADING EDGE ON LEFT HORIZONTAL STAB, CRACK & FASTENER PULLED. REMOVED AND REPLACED RIB PER SRM 51-40-00, DEFECT SIZE: .5 INCH.
- Difficulty date
- June 6, 2007
- Submitted
- June 6, 2007
- Operation
- Air carrier
- Aircraft
- N420US
- Make and model
- Boeing 737401
- Aircraft serial
- 23987
- Aircraft time
- 50,436 hours, 50,436 cycles
- System (JASC)
- 5511 · Horizontal Stabilizer, Spar/Rib
- Part
- Rib
- Condition
- Cracked
- Location
- Horizontal Stab
- 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.