What was found
AIRCRAFT IN BASE MAINTENANCE: CRACK IN VERTICAL RIB AT 3RD STIFFENER OF RH HORIZONTAL STABILIZER AT STA 92.70, MEASURING L=0.5 IN, W=0.002 IN, D=0.04 IN. REPLACED RIB WITH NEW IAW AARD 51-00-05-1.
- Difficulty date
- September 16, 2021
- Submitted
- September 20, 2021
- Operation
- Air carrier
- Aircraft
- N820NN
- Make and model
- Boeing 737823
- Aircraft serial
- 29559
- Aircraft time
- 35,175 hours, 14,301 cycles
- System (JASC)
- 5511 · Horizontal Stabilizer, Spar/Rib
- Part
- Rib
- Part number
- 182A5301U4
- Condition
- Cracked
- Location
- Zone 300 - Stabs
- 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.