# NTSB NYC86LA233: Robinson R22, N9033B, Sterling, MA, September 9, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 9, 1986, 14:00 local (18:00 UTC)
- Place: Sterling, MA
- Location: 42.4376° N, 71.7606° W: Placed by OpenAirDocs: center of Sterling, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4376&lon=-71.7606&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 30419
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC86LA233
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30419/pdf
- Page: https://openairdocs.org/ntsb/NYC86LA233

## Sequence of events

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

- Loss of control - in flight, landing
  - aircraft handling - inadequate, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (cause)
  - autorotation - performed, pilot in command
- In flight collision with object, landing - flare/touchdown
  - object - tree(s)

## Analysis

ON A STUDENT PILOT'S THIRD SOLO SUPERVISED FLIGHT, THE PILOT PLACED THE THROTTLE IN DETENT, BECAME CONFUSED, AND AUTOROTATED INTO TREES.

## Aircraft

- Registration: [N9033B](https://openairdocs.org/deregistered/N9033B-2012-11-19), registration cancelled 2012-11-19, S/N 0053, built 1980 (OpenAirDocs)
- Reported make and model: ROBINSON R22
- Registry model: [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22) (registry code 7640102) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 0053
- Engines: LYCOMING O-320-A2B 124 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Aviation Training Academy
- Airworthiness certificate: Standard, Normal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 18; student; medical: class 2, valid medical--w/ waivers/lim; flight hours: 2 total, 2 in this make and model, 1 as pilot in command

## Weather

- Conditions: Visual (VMC), Day

## 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 19860909086589A](https://openairdocs.org/incident/19860909086589A), Sep 9, 1986: Robsin R22, Sterling, MA, Substantial damage. The student pilot reported gusting winds and a loss of rotor RPM during a solo flight. No mechanical malfunctions.

## Other investigations on N9033B (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 MIA82DA105](https://openairdocs.org/ntsb/MIA82DA105), Apr 21, 1982: Robinson R-22 (N9033B), Vero Beach, FL, substantial damage

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.

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