# NTSB NYC88LA204: Sikorsky S-76A, N69WW, Teterboro, NJ, August 7, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 7, 1988, 04:50 local (08:50 UTC)
- Place: Teterboro, NJ
- Location: 40.8546° N, 74.0596° W: Placed by OpenAirDocs: center of Teterboro, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.8546&lon=-74.0596&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 9, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 36200
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC88LA204
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36200/pdf
- Page: https://openairdocs.org/ntsb/NYC88LA204

## Sequence of events

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

- Roll over, taxi - from landing
  - terrain condition - soft (contributing factor)
  - aircraft handling - inadequate, copilot/second pilot (cause)
  - light condition - night
  - supervision - inadequate, pilot in command (cause)
  - unsuitable terrain or takeoff/landing/taxi area - not identified, copilot/second pilot (contributing factor)

## Analysis

THE S-76 HELICOPTER WAS TAXIING ON ITS COMPANY RAMP WHEN THE COPILOT TAXIED ONTO A GRASS AREA. DURING A LEFT TURN THE RIGHT MAIN WHEEL STUCK IN A SOFT SPOT AND THE HELICOPTER ROLLED OVER ON ITS RIGHT SIDE RECEIVING SUBSTANTIAL DAMAGE. THE GROUND MANEUVER THAT PRECEDED THE ROLLOVER MET SEVERAL OF THE CRITERIA DESCRIBED IN THE FAA ADVISORY CIRCULAR FOR HELICOPTER DYNAMIC ROLLOVER.

## Aircraft

- Registration: [N69WW](https://openairdocs.org/deregistered/N69WW-2013-06-11), registration cancelled 2013-06-11, S/N 760208 (OpenAirDocs)
- Reported make and model: SIKORSKY S-76A
- Registry model: [Sikorsky S-76](https://openairdocs.org/model/sikorsky-s-76) (registry code 8143010) (OpenAirDocs)
- Category: Helicopter
- Serial number: 760208
- Airframe hours: 4658
- Engines: ALLISON 250-C30 700 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Executive/Corporate, Part 91
- Operator: Nimad Aviation, doing business as Damin Aviation
- Registered owner: Executive Helicopter Sales
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, July 29, 1988, 39 hours before
- Departed: HIP, GARDEN CITY, NY

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane, helicopter; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 9,311 total, 1,755 in this make and model, 8,311 as pilot in command, 83 in the last 90 days, 38 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 260° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 77 °F, dew point 73 °F
- Altimeter: 29.00 inHg
- Observed at: TEB

## 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 19880807046409A](https://openairdocs.org/incident/19880807046409A), Aug 7, 1988: Skrsky S76, Teterboro, NJ, Substantial damage. A wheel hit soft spot while turning to park causing the helicopter to enter dynamic roll over. Stopped on its side.

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.