# Accident 19931018039759A: Aerosp SA315B, Beckwourth, CA, October 18, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 18, 1993, 14:30 local time
- Place: Beckwourth, CA
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Rotorcraft external load (Part 133)
- Location: 39.6602° N, 120.4302° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.6602&lon=-120.4302&mi=10
- Aircraft: N49511, a cancelled registration (https://openairdocs.org/deregistered/N49511-2007-06-12) (OpenAirDocs)
- Registry model: Aerospatiale SA315B (registry code 8680615, https://openairdocs.org/model/aerospatiale-sa315b) (OpenAirDocs)
- Registry engine: Turbomeca ARTOUSTEIIIB (registry code 60003, https://openairdocs.org/engine/turbomeca-artousteiiib) (OpenAirDocs)
- Reported make and model: AEROSP SA315B
- Reported engine: TMECA ARTOUSTE3B
- Fatal injuries: 0
- Pilot flight hours: 9,000 total, 1,800 in this make and model, 385 in the last 90 days
- NTSB investigation: [NTSB LAX94LA017](https://openairdocs.org/ntsb/LAX94LA017) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19931018039759A

## Narrative

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

HEARD NOISE ON LONG LIFT. PITCHED UP SWUNG LEFT AND RIGHT LOST ROTOR RPM. FELL INTO TREES. COLLECTIVE SERVO FAILED.

## 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 LAX94LA017](https://openairdocs.org/ntsb/LAX94LA017), Oct 18, 1993: Aerospatiale SA-315 (N49511), Beckwourth, CA, substantial damage. Probable cause: was the worn collective servo causing a hydraulic lock and not allowing the pilot to lower the collective. This condition caused the main rotor blades rpm to decay.

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.

---
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.