- Difficulty date
- September 22, 2023
- Submitted
- October 12, 2023
- Operation
- Air carrier
- Aircraft
- N421LV
- Make and model
- Boeing 7377H4
- Aircraft serial
- 32452
- Aircraft time
- 71,597 hours, 42,416 cycles
- Part
- Rib
- Part number
- UNKNOWN
- Condition
- Cracked
- Location
- Zn 300 Stabilize
- 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.
What was found
LEFT HORIZONTAL STAB RIB #4 STIFFENER #3 LOWER RADIUS IS CRACKED.<[01] CERTIFIED;[02] STEP 11; OK TO INSTALL RIB.;[03] UPDATED MEASUREMENTS. STEP 11; OK TO INSTALL RIB.;[04] PARTIAL INSTALLATION UPDATE ON STEP 11.;[05] REPAIRED LEFT HORIZONTAL STAB RIB #4 STIFFENER #3 LOWER RADIUS.;[06] VERIFIED CORRECTIVE ACTION 5.<BR>VERIFIED MEASUREMENTS TABLE.<BR>JOB COMPLETE.