# SDR SWAA2023051725217

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2023
- Submitted: May 17, 2023
- Operation: Air carrier
- Aircraft: [N958WN](https://openairdocs.org/aircraft/N958WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36673
- Aircraft time: 38,993 hours, 23,664 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Seal
- Condition: Cracked
- Location: Zn 300 Stabilize
- 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/SWAA2023051725217

## Discrepancy

LEFT HORIZONTAL FRONT SPAR ATTACH LUG UPPER SLIDE SEAL IS CRACKED<[01] REMOVED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-000-801. STEP 2.;[02] INSTALLED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-400-802. STEP 3. F.;[03] EDITED ITEM 2. INSTALLED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-400-801. STEP 3. D.;[04] VERIFIED CORRECTIVE ACTION 3

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