# SDR DALA2025011300268

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2025
- Submitted: January 13, 2025
- Operation: Air carrier
- Aircraft: [N979AT](https://openairdocs.org/aircraft/N979AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55038
- Aircraft time: 59,302 hours, 42,501 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Condition: Damaged
- Location: Zone 300
- 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/DALA2025011300268

## Discrepancy

CORROSION AND TOOL MARKS WERE FOUND ON INNER HOLE #27 AND WEAR ON UPPER SKIN AROUND FROM #27 AT RH HORIZONTAL STAB. SUMMARY OF NRC 00735: CORROSION LEVEL 2. CORROSION IN HOLE #27 AT RH HORIZONTAL STAB WAS REPAIRED PER PRI 622779-14 REV 2 & ER/A 622779-14 REV ORIGINAL. REPAIR APPROVAL IS LIMITED TO 24 MONTHS FROM 24DEC24. ADDITIONAL ENGINEERING AUTHORIZATION (ER/A REVISION) IS REQUIERED FOR CONTINUED SERVICE BEYOND THIS LIMIT. NOTE TO ENGINEER: DAMAGE TOLERANCE EVALUATION IS REQUIERED IN ACCORDANCE WITH PROCEDURES ESTABLISHED IN FAA AC 120-93. (REFRENCE LOG PAGE 0748181). ASSOCIATED ER/A 14-622779 ADDED FOR AC 9544. (LP #0753609)

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