# SDR SWAA2021021541753

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2021
- Submitted: February 15, 2021
- Operation: Air carrier
- Aircraft: [N439WN](https://openairdocs.org/aircraft/N439WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29834
- Aircraft time: 59,583 hours, 35,303 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Seal
- Condition: Cracked
- Location: Horizontal Stab
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021021541753

## Discrepancy

LT HORIZ STAB UPPER FWD SLIDE SEAL IS CRACKED. / REMOVED LT HORIZ STAB UPPER FWD SLIDE SEAL IAW AMM 53-31-31-000-802 59796C 19JAN21 844C 19JAN21 REMOVED AND REPLACED LT HORIZ. STAB UPPER FWD SLIDE SEAL IAW AMM 53-31-31-400-802 59796C 22JAN21

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