# SDR CHIR201708282942

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2017
- Submitted: August 28, 2017
- Operation: Air carrier
- Aircraft: [N246CH](https://openairdocs.org/aircraft/N246CH), registered now
- Make and model: Boeing 234
- Registry model: [Boeing 234](https://openairdocs.org/model/boeing-vertol-234) (OpenAirDocs)
- Aircraft serial: MJ017
- Aircraft time: 16,539 hours
- System (JASC): [5260 · Entrance Stairs](https://openairdocs.org/jasc/5260)
- Part: Skin Panel
- Condition: Cracked
- Location: Airstairs
- 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/CHIR201708282942

## Discrepancy

WHILE PERFORMING RAMP CHECK AT THE END OF THE DAY, MECHANIC FOUND 2 CRACKS AT BOTTOM RADIUS OF AIR STAIR ENTRANCE SKIN PANEL STA 124 WL -32 AND STA 122 WL -30. ONE CRACK WAS STOP DRILLED, THE OTHER ONE ENDED AT A RIVET AND THERE WAS NO NEED TO STOP DRILL SUCH. AFTER EVALUATION BY REPAIR STATION, REPAIR WAS DETERMINED TO BE MAJOR.

---
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.