# NTSB NYC91LA227: Hughes 269C, N9590F, Galloway, OH, September 1, 1991

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: September 1, 1991, 15:05 local (19:05 UTC)
- Place: Galloway, OH
- Coordinates: 39.929832, -83.190414 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9298&lon=-83.1904&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 37004
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC91LA227
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37004/pdf
- Page: https://openairdocs.org/ntsb/NYC91LA227

## Probable cause

IMPROPER SUPERVISION BY THE FLIGHT INSTRUCTOR WHICH RESULTED IN AN INADVERTENT GROUND CONTACT AND A DYNAMIC ROLLOVER. A FACTOR RELATED TO THE ACCIDENT WAS IMPROPER USE OF THE FLIGHT CONTROLS BY THE NON-RATED STUDENT PILOT.

## Sequence of events

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

- In flight collision with terrain/water, hover
  - rotorcraft flight controls - improper use of, dual student (contributing factor)
  - supervision - inadequate, pilot in command(cfi) (cause)
  - remedial action - delayed, pilot in command(cfi) (cause)
- Roll over, descent - uncontrolled

## Analysis

THE STUDENT PILOT AND INSTRUCTOR WERE ON THEIR FIRST DUAL FLIGHT. THE STUDENT WAS ON THE FLIGHT CONTROLS WHEN THE HELICOPTER DRIFTED RIGHT AND THE RIGHT SKID CAUGHT THE GROUND.  THE HELICOPTER ENTERED A DYNAMIC ROLLOVER.  THE FLIGHT INSTRUCTOR SAID HE WAS MONITORING THE MOVEMENTS OF THE STUDENT, HOWEVER, HE SAID HE HAD LET THE STUDENT GO TOO FAR PRIOR TO TAKING CORRECTIVE ACTION.

## Aircraft

- Registration: [N9590F](https://openairdocs.org/deregistered/N9590F-2013-05-23), registration cancelled 2013-05-23, S/N 340285, built 1974 (OpenAirDocs)
- Reported make and model: HUGHES 269C
- Registry model: [Hughes 269C](https://openairdocs.org/model/hughes-269c) (registry code 4470504) (OpenAirDocs)
- Registry engine: [Lycoming HO-360 series](https://openairdocs.org/engine/lycoming-ho-360-series) (registry code 41513, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 340285
- Engines: LYCOMING HIO-360-DIA 190 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: T-Air Helicopters, Inc.
- Registered owner: T-Air Helicopters, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 2, 2000
- Airport: GIG, Darby Dan

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial, airline transport, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane, helicopter; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 4,550 total, 400 in this make and model, 4,255 as pilot in command, 75 in the last 90 days, 23 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 45° at 5 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 81 °F

## 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 19910901037589A](https://openairdocs.org/incident/19910901037589A), Sep 1, 1991: Hughes 269C, Columbus, OH, Substantial damage. Helicopter drifted sideways skid hit ground causing dynamic rollover. CFI failed to timely takeover to stop drift.

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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