# Accident 19940707017769A: Robsin R22MARINER, Portland, OR, July 7, 1994

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 7, 1994, 11:25 local time
- Place: Portland, OR
- Damage: Substantial damage
- Phase of flight: Pwr On Vertical Ldng/Rtrcrft
- Operating rules: General operating rules (Part 91)
- Operator: LJES
- Location: 45.4001° N, 122.7892° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=45.4001&lon=-122.7892&mi=10
- Aircraft: N42WC, registered now (https://openairdocs.org/aircraft/N42WC) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 MARINER (registry code 7640115, https://openairdocs.org/model/robinson-helicopter-r22-mariner) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: ROBSIN R22MARINER
- Reported engine: LYC O320B2C
- Fatal injuries: 0
- Pilot flight hours: 1,822 total, 1,475 in this make and model, 257 in the last 90 days
- NTSB investigation: [NTSB SEA94LA171](https://openairdocs.org/ntsb/SEA94LA171) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19940707017769A

## Narrative

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

LOST TAIL ROTOR EFFECTIVNESS. AUTOROTATED TO A BEACH. TAIL ROTOR SHAFT DISCONNECTED. KEY NOT INSTALLED AT FACTORY.

## 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 SEA94LA171](https://openairdocs.org/ntsb/SEA94LA171), Jul 7, 1994: Robinson R-22M (N42WC), Portland, OR, substantial damage. Probable cause: TAIL ROTOR GEARBOX FAILURE DUE TO INADEQUATE ASSEMBLY AND INSPECTION PROCEDURES BY THE MANUFACTURER.

## Other reports on N42WC (1)

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

- [Accident 20220727013169A](https://openairdocs.org/incident/20220727013169A), Jul 27, 2022: Robinson Helicopter Company R22 MARINER (N42WC), Pembroke Pines, FL, Destroyed. Pilot lost control of the helicopter while hovering at approximately 20 feet between runways 10L and 10R. The helicopter began to spin, struck the ground, and…

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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