# NTSB NYC83FNA04: Sikorsky H-19D, N37799, Halifax, MA, August 3, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 3, 1983, 19:32 local (23:32 UTC)
- Place: Halifax, MA
- Location: 41.9912° N, 70.8620° W: Placed by OpenAirDocs: center of Halifax, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.9912&lon=-70.8620&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35108
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC83FNA04
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35108/pdf
- Page: https://openairdocs.org/ntsb/NYC83FNA04

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, maneuvering - aerial application
  - engine assembly,valve,intake - failure,total (cause)
- Forced landing, landing - flare/touchdown
  - autorotation - performed, pilot in command (contributing factor)
- In flight collision with object, approach - vfr pattern - final approach
  - object - wire,transmission (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - dirt bank/rising embankment (contributing factor)
  - maneuver - initiated, pilot in command (contributing factor)
  - terrain condition - open field (contributing factor)

## Analysis

AFTER ARRIVING AT THE FIELD TO BE SPRAYED, THE PLT INITIATED A DESCENT TO BEGIN AERIAL APPLICATION. AT APRX 40 FT AGL & 50 KTS, THE ENG FAILED. THE PLT ENTERED AN AUTOROTATION, BUT COULD NOT AVOID TELEPHONE WIRES. HE WAS ABLE TO AVOID HITTING A DIKE, BUT IN DOING SO, HE FLARED IN A NOSE HIGH ATTITUDE. SUBSEQUENTLY, THE TAIL SKID & ROTOR IMPACTED THE TERRAIN. AN INVESTIGATION REVEALED THAT THE #1 EXHAUST VALVE HAD FAILED.

## Aircraft

- Registration: [N37799](https://openairdocs.org/deregistered/N37799-2005-10-05), registration cancelled 2005-10-05, S/N 56-1542, built 1956 (OpenAirDocs)
- Reported make and model: SIKORSKY H-19D
- Registry model: [Sikorsky UH-19D](https://openairdocs.org/model/sikorsky-uh-19d) (registry code 814161G) (OpenAirDocs)
- Registry engine: [Wright R-1300 series](https://openairdocs.org/engine/wright-r-1300-series) (registry code 67060, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 15-642
- Airframe hours: 2481
- Engines: WRIGHT R-1300-30 700 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 137
- Registered owner: C&W Ag Air
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, March 15, 1983, 90 hours before
- Departed: MA02, HANSON, MA
- Destination: HALIFAX, MA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 9,377 total, 1,117 in this make and model, 9,210 as pilot in command, 321 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 245° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 79 °F
- Altimeter: 30.00 inHg

## 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 19830803038669A](https://openairdocs.org/incident/19830803038669A), Aug 3, 1983: Orlhel UH19DSKRSKY, Halifax, MA, Substantial damage. Crash occurred during autorotation landing after engine quit due to exhaust valve breaking.

## Other investigations on N37799 (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 SEA03LA125](https://openairdocs.org/ntsb/SEA03LA125), Jul 4, 2003: Sikorsky UH-19D (N37799), La Grande, OR, destroyed. Probable cause: The cross threading and separation of the clutch assembly while maneuvering which resulted in a loss of engine power followed by a hard landing. An inadequate maintenance overhaul was a factor.

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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