# SDR SWAA2022092944308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2022
- Submitted: September 29, 2022
- Operation: Air carrier
- Aircraft: [N431WN](https://openairdocs.org/aircraft/N431WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29845
- Aircraft time: 66,939 hours, 39,408 cycles
- System (JASC): [5530 · Vertical Stabilizer](https://openairdocs.org/jasc/5530)
- Part: Angle
- Condition: Cracked
- Location: Vertical 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/SWAA2022092944308

## Discrepancy

VERTICAL FIN L/E FRONT SPAR FITTING FIX AFT EDGE SPRING ANGLE 2EA. CRACKS NOTED (DOT 223-VLE002). VERTICAL FIN L/E FRONT SPAR FITTING FIX FWD EDGE SPRING ANGLE 2EA. CRACKS NOTED (DOT 223-VLE002). / [01] REMOVED FWD SPRING ANGLE AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-40-02-0G-0.;[02] LOCATED AND DRILLED NEW FWD SPRING ANGLE AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-40-05-0G-0.;[03] VERIFIED STEPS #1 AND #2; REPLACEMENT FWD SPRING ANGLE LOCATED AND DRILLED.;[04] OK TO TREAT AND PRIME DRILLED HOLES.;[05] APPLIED ALODINE AND PRIMER AT NEW FWD SPRING ANGLE HOLES AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-20-01-0G-0; AMM 51-21-72-370-801.;[06] VERIFIED STEP #5.<BR> OK TO INSTALL NEW FWD SPRING ANGLE.;[07] PARTIALLY INSTALLED NEW FWD SPRING ANGLE AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-40-02-0G-0; DWG # 176A3001.;[08] (RII) VERIFIED STEP #7; FWD SPRING ANGLE PARTIALLY INSTALLED.;[09] COMPLETED INSTALLATION OF FWD SPRING ANGLE AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-40-02-0G-0; DWG # 176A3001;[10] REMOVED AND REPLACED FWD SPRING ANGLE AT VERTICAL FIN L/E FRONT SPAR FITTING FIX AS PER B737-700 SRM 51-40-02-0G-0; DWG # 176A3001;[11] VERIFIED STEPS 9 AND 10

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.