# NTSB NYC84LA212: Hiller 12E, N4033P, Meadville, PA, June 17, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 16, 1984, 21:02 local (Jun 17, 1984, 01:02 UTC)
- Place: Meadville, PA
- Coordinates: 41.640392, -80.139404 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.6404&lon=-80.1394&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): 35686
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84LA212
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35686/pdf
- Page: https://openairdocs.org/ntsb/NYC84LA212

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - object - guy wire (contributing factor)
  - clearance - misjudged, pilot in command (cause)
  - visual lookout - inadequate, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ACFT FLEW INTO WIRES DURING A CROP SPRAYING MISSION. THE ACFT WAS FLYING AT ABOUT 5-10 FT WHEN A FLASH WAS SEEN OVERHEAD. THE ACFT VIBRATED AND SLOWED BEFORE IMPACTING THE GROUND AND ROLLING OVER.

## Aircraft

- Registration: [N4033P](https://openairdocs.org/deregistered/N4033P-2013-08-08), registration cancelled 2013-08-08, S/N 5178, built 1982 (OpenAirDocs)
- Reported make and model: HILLER 12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41582, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Serial number: 5178
- Airframe hours: 643
- Engines: LYCOMING VO-540-C2A 305 horsepower reciprocating
- Damage: Substantial damage
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Registered owner: G & G Ag Service, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, October 5, 1983, 76 hours before
- Departed: MEADVILLE, PA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial, flight instructor; airplane ratings: single-engine land; medical: valid medical--no waivers/lim.; seat: front; flight hours: 811 total, 81 in this make and model, 723 as pilot in command, 84 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 70 °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 19840616026859A](https://openairdocs.org/incident/19840616026859A), Jun 16, 1984: Hiller UH12E, Meadville, PA, Substantial damage. Helicopter struck powerline during aerial application flight.

## Other investigations on N4033P (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 ERA11LA216](https://openairdocs.org/ntsb/ERA11LA216), Mar 25, 2011: Hiller UH-12E (N4033P), Culpeper, VA, substantial damage. Probable cause: Mechanical failure of the transmission for reasons that could not be determined because the transmission could not be torn down.

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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