# SDR SWAA2023032010436

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2023
- Submitted: March 20, 2023
- Operation: Air carrier
- Aircraft: [N278WN](https://openairdocs.org/aircraft/N278WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36441
- Aircraft time: 52,434 hours, 31,459 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Rib
- 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/SWAA2023032010436

## Discrepancy

CRACK ON INSPAR RIB 120.30 AT 34 INCHES FROM FRONT SPAR AT LT HORIZONTAL STABILIZER. 2023-127698<[01] ET TOOL USED: PN: MIZ-21C ; SN: 769680; DUE DATE: 07-JUL-23;[02] ACCOMPLISHED PERMANENT REPAIR HORIZONTAL STABILIZER - INSPAR RIB SSTA 120.3 - LOWER CHORD IAW EA-23-155-00790-WP1 ; EA 23-155-00790-WIP2 AND EA SUMMARY 23-155-00790. SEE INDIVIDUAL SIGN OFF BELLOW.;[03] ACCOMPLISHED PERMANENT REPAIR HORIZONTAL STABILIZER - INSPAR RIB SSTA 120.3 - LOWER CHORD IAW EA-23-155-00790-WP1 ; EA 23-155-00790-WIP2 AND EA SUMMARY 23-155-00790. RII; SEE INDIVIDUAL SIGN OFF BELLOW.

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