What was found
HORIZONTAL RIBS AT STATION 110 FOUND CRACKED DURING BOROSCOPE INSPECTION. REPAIRED CRACKS IN LT AND RT HORIZONTAL STABILIZER RIBS BY INSTALLING NEW RIB KIT IAW KIT DRAWING 128-6200 REV 4.
- Difficulty date
- July 10, 2018
- Submitted
- August 22, 2018
- Operation
- Air carrier
- Aircraft
- N489TM
- Make and model
- Raythn 400ARAYTHEON
- Aircraft serial
- RK559
- Aircraft time
- 4,444 hours, 3,657 cycles
- System (JASC)
- 5511 · Horizontal Stabilizer, Spar/Rib
- Part
- Rib
- Condition
- Cracked
- Location
- Horiz Stab
- Stage of operation
- IN
- How discovered
- B
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.