# NTSB NYC06CA213: Robinson R22 Beta, N2649D, Frederick, MD, August 28, 2006

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 28, 2006, 14:15 local (18:15 UTC)
- Place: Frederick, MD
- Coordinates: 39.417499, -77.374168
- Nearby events: https://openairdocs.org/map.md?lat=39.4175&lon=-77.3742&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 28, 2006
- Report: Approved by Office Director
- Parties: Baltimore FSDO EA-07
- NTSB case key (mKey): 64449
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC06CA213
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64449/pdf
- Page: https://openairdocs.org/ntsb/NYC06CA213

## Probable cause

The flight instructor's delayed remedial action during a hovering autorotation, which resulted in a hard landing and inadvertent dynamic rollover.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Hard landing, maneuvering
  - autorotation - initiated, dual student
  - remedial action - delayed, pilot in command(cfi) (cause)
  - dynamic rollover - inadvertent, pilot in command(cfi)

## Analysis

According to the flight instructor, he and his student, a certificated airplane pilot, were practicing hovering autorotations about 3 feet above the ground. The student pilot reduced engine power to initiate the maneuver, pushed forward on the cyclic, and the helicopter descended. The flight instructor stated that he assumed cyclic control, and then the helicopter impacted the ground "fairly hard and bounced." The student pilot subsequently pulled up on the collective, the left skid remained in contact with the ground, and the helicopter rolled over on its left side. The flight instructor stated that there were no mechanical or performance deficiencies with the helicopter.

## Factual narrative

According to the flight instructor, he and his student, a certificated airplane pilot, were practicing hovering autorotations about 3 feet above the ground. The student pilot reduced engine power to initiate the maneuver, pushed forward on the cyclic, and the helicopter descended. The flight instructor stated that he assumed cyclic control, and then the helicopter impacted the ground "fairly hard and bounced." The student pilot subsequently pulled up on the collective, the left skid remained in contact with the ground, and the helicopter rolled over on its left side. The flight instructor stated that there were no mechanical or performance deficiencies with the helicopter.

## Aircraft

- Registration: [N2649D](https://openairdocs.org/deregistered/N2649D-2008-08-20), registration cancelled 2008-08-20, S/N 0835, built 1988 (OpenAirDocs)
- Reported make and model: Robinson R22 BETA
- Registry model: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 0835
- Airframe hours: 544.4
- Engines: Lycoming O-320-B2C 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Advanced Helicopter Concepts INC.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 1, 2006, 62.6 hours before
- Departed: KFDK, Frederick, MD
- Destination: KFDK
- Airport: KFDK, Frederick Municipal Airport

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Flight instructor; age 23; injuries: none; flight instructor, commercial; instrument ratings: helicopter; medical: class 2, without waivers/limitations; last flight review August 1, 2006; seat: left; flight hours: 396 total, 396 in this make and model, 171 in the last 90 days, 77 in the last 30 days, 3 in the last 24 hours
- Pilot; injuries: none; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, with waivers/limitations; seat: right

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 6,000 ft broken
- Temperature: 90 °F, dew point 66 °F
- Altimeter: 29.92 inHg
- Observed at: KFDK

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20060828021859A](https://openairdocs.org/incident/20060828021859A), Aug 28, 2006: Robsin R22BETA, Frederick, MD, Substantial damage. (-23) The pilot [privacy data omitted], a private rated airplane single engine land and sea pilot was receiving flight instruction from [privacy data omitted]…

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.

---
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.