# SDR CHIR20195273948

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2019
- Submitted: June 12, 2019
- Operation: Air carrier
- Aircraft: [N242CH](https://openairdocs.org/aircraft/N242CH), registered now
- Make and model: Boeing 234
- Registry model: [Boeing 234](https://openairdocs.org/model/boeing-vertol-234) (OpenAirDocs)
- Aircraft serial: MJ023
- Aircraft time: 15,030 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Housing
- Part number: 234D21661
- Condition: Cracked
- Location: Aft Transmission
- Component: Aft Transmissio, Boeing
- Component part number: 234D22004
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHIR20195273948

## Discrepancy

THE MAINTENANCE CREW REMOVED THE AFT TRANSMISSION DUE TO AN OIL LEAK AND DISCOVERED A CRACKED FWD R/H MOUNT LUG. COMPONENT RECEIVED AT THIS REPAIR STATION 6/7/2019 AND CONFIRMED CRACKED UPPER HOUSING. THE TRANSMISSION WAS THEN INSPECTED AND REPAIRED BY THIS RS ON SWO-047697-19. DETAILS ARE ON FILE.

---
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.