# Accident 20041127030469A: Robsin R22BETA, Arlington, WA, November 27, 2004

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 27, 2004, 09:30 local time
- Place: Arlington, WA
- Damage: Destroyed
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 48.1933° N, 122.1508° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=48.1933&lon=-122.1508&mi=10
- Aircraft: N4029Q, a cancelled registration (https://openairdocs.org/deregistered/N4029Q-2013-09-24) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 BETA (registry code 7640110, https://openairdocs.org/model/robinson-helicopter-r22-beta) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: ROBSIN R22BETA
- Reported engine: LYC O320*
- People aboard: 2
- Fatal injuries: 2
- NTSB investigation: [NTSB SEA05FA019](https://openairdocs.org/ntsb/SEA05FA019) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20041127030469A

## Narrative

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

(-23) ON NOVEMBER 27TH @ APPROX. 9:30 AM, N4029Q A ROBINSON R-22 HELICOPTER WITH TWO PEOPLE ON BOARD WAS FLYING NW OF ARLINGTON AIRPORT AT AN UNKNOWN ALTITUDE AND FOR AN UNKNOWN REASON, BROKE UP IN-FLIGHT AND SCATTERED DEBRIS FOR APPROX. 3/4 OF A MILE AND IMPACTED A DIRT FARM FIELD ON ITS LEFT SIDE, BOTH PEOPLE REMAINED IN THE AIRCRAFT AND WERE PRONOUNCED DEAD AT THE SCENE. THE BEGINNING OF THE DEBRIS WAS MOSTLY PLEXI-GLASS AND SMALL PIECES OF WINDOW FRAME, THE FOLLOWING PIECES WERE ALL WITHIN APPROX. 50 FT OF EACH OTHER IN THE MIDDLE OF THE DEBRIS FIELD: 2 SECTIONS OF THE TAILBOOM, 1 SECTION OF EACH T/R BLADE, VERTICAL AND HORIZONTAL STABILIZERS INTACT AND BROKE AT THE CASTING, AND THE MAIN PORTION OF THE AIRCRAFT APPROX. 1/4 MILE TO THE NW. APPROX. 1/4 MILE TO THE WEST FROM THE MAIN FUSELAGE WAS THE T/R GEARBOX AND T/R HUT WITH THE REMAINDER OF EACH BLADE STILL ATTACHED. THE MAIN ROTOR BLADES WERE STILL ATTACHED, PITCH CHANGE LINKS BROKEN, ONE BLADE ROLLED 180 DEGREES ON ITS PITCH AXIS AND BOTH BLADES HAD SEVERE CONING IN THE POSITIVE DIRECTION (UP). THERE WAS NO INDICATION OF FIRE.

## 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 SEA05FA019](https://openairdocs.org/ntsb/SEA05FA019), Nov 27, 2004: Robinson R22 Beta (N4029Q), Arlington, WA, destroyed, 2 fatal. Probable cause: The divergence of the main rotor from its normal plane of rotation for an undetermined reason, resulting in rotor contact with the aircraft's left windscreen. The failure of the door pins to be…

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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