# Accident 19830820074729A: Boeing 1072, Shaver Lake, CA, August 20, 1983

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 20, 1983, 10:05 local time
- Place: Shaver Lake, CA
- Damage: Destroyed
- Phase of flight: Hovering
- Operating rules: Rotorcraft external load (Part 133)
- Location: 37.1302° N, 119.2208° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=37.1302&lon=-119.2208&mi=10
- Aircraft: N190CH, registered now (https://openairdocs.org/aircraft/N190CH) (OpenAirDocs)
- Registry model: Boeing-Vertol 107-II (registry code 1385007, https://openairdocs.org/model/boeing-vertol-107-ii) (OpenAirDocs)
- Registry engine: GE CT58-140-2 (registry code 30129, https://openairdocs.org/engine/ge-ct58-140-2) (OpenAirDocs)
- Reported make and model: BOEING 1072
- Reported engine: GE CT581401
- Fatal injuries: 0
- Pilot flight hours: 2,422 in this make and model, 272 in the last 90 days
- NTSB investigation: [NTSB LAX83FA395](https://openairdocs.org/ntsb/LAX83FA395) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19830820074729A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

#3SYN CHRONIZING SHAFT FAILED ON LIFTING A EXTERNAL LOAD. CAUSED MAIN ROTORS TO COLLIDE. RIVET HOLE FATIGUE CRACKS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX83FA395](https://openairdocs.org/ntsb/LAX83FA395), Aug 20, 1983: Boeing Vertol BV-107-II (N190CH), Shaver Lake, CA, destroyed, 2 fatal

## Other reports on N190CH (1)

Matched to the same aircraft by N-number and date.

- [Incident 20120809020429I](https://openairdocs.org/incident/20120809020429I), Aug 9, 2012: Boeing V.-Columbia Helicopters 107-II (N190CH), Chester, CA, Minor damage. According to the pilot and copilot statements, during a dip for water there was some miscommunication between the crew that allowed the aircraft to get to…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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