What was found
LEFT HORIZONTAL STAB AT APPROX HSS 120.6 INTERNAL VERTICAL STIFFNER ON RIB 3RD ONE LOOKING AFT IS CRACKED. GROUNDED - YES. REPAIRED THE RIB STIFFNER IAW SRM 55-10-09-2R-4. REMOVED & INSTALLED IAW SRM 51-40-02 AND AMM 51-31-00.
- Difficulty date
- January 13, 2026
- Submitted
- February 3, 2026
- Operation
- Air carrier
- Aircraft
- N581AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35188
- Aircraft time
- 64,499 hours, 19,562 cycles
- System (JASC)
- 5511 · Horizontal Stabilizer, Spar/Rib
- Part
- Rib
- Part number
- 182A53041
- Condition
- Cracked
- Location
- Zone 300
- 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.