# SDR SWAA2021111725221

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2021
- Submitted: November 17, 2021
- Operation: Air carrier
- Aircraft: N774SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27882
- Aircraft time: 69,284 hours, 41,071 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Condition: Cracked
- Location: Rh Hor Stab
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021111725221

## Discrepancy

RIGHT HORIZONTAL STAB INSPAR RIB ASSY NR 4 HSS 120.30.  STIFFENER #2 LOWER AREA CRACK NOTED.  REMOVED CRACK ON STIFFENER 2 RIB 4 RT HORIZONTAL STAB IAW SRM 55-10-09 -2R REPAIR4. VERIFIED STEP 1 PERFORMED ROTO INSP ON REWORKED AREA 4EA EXISTING HOLES AT LOWER CHORD IAW NDT P6 51-00-00 PROC.16 CRACK NOTED ON 1EA HOLE.  PERFORMED HFEC INSP ON REWORKED AREA WEB IAW  NDT P6 51-00-00 PROC.23 CRACK NOTED.  REMOVED CRACK ON WED AND HOLE AT 4 RIB STIFFENER 2 IAW SRM 55-10 09-2R REPAIR 5.

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