- Difficulty date
- October 7, 2021
- Submitted
- November 17, 2021
- Operation
- Air carrier
- Aircraft
- N774SW
- Make and model
- Boeing 7377H4
- Aircraft serial
- 27882
- Aircraft time
- 69,284 hours, 41,071 cycles
- Part
- Stiffener
- Condition
- Cracked
- Location
- Lh Hor 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.
What was found
LEFT HORIZONTAL STAILIZER INSPAR RI ASSY #4 STIFFENER #4 LOWER CRACK NOTED / REMOVED DAMAGED AT LT HORIZONTAL STAB #4 RIB #4 STIFFENER LOWER IAW 7 SRM 55-10-09-2R REPAIR 4. NO CRACKS NOTED. INSTALLED REPAIR AT#4 RIB STIFFENERS #4 AT L/H HORIZONTAL STAB IAW B737 SRM55-10-09-R2 REPAIR 4. CORRECTION: VERIFIED STEPS 1 5 AND 8. RII STEPS VERIFIED ALL STEPS VERIFIED.