# NTSB DEN88LA131: Grumman G-164, N455Y, Ayr, ND, June 18, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 18, 1988, 14:30 local (19:30 UTC)
- Place: Ayr, ND
- Location: 47.0411° N, 97.4909° W: Placed by OpenAirDocs: center of Ayr, ND, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.0411&lon=-97.4909&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 28, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 17481
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN88LA131
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17481/pdf
- Page: https://openairdocs.org/ntsb/DEN88LA131

## 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 - wire,transmission (contributing factor)
  - weather condition - turbulence,clear air (contributing factor)
  - clearance - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Aircraft

- Registration: [N455Y](https://openairdocs.org/deregistered/N455Y-2018-03-23), registration cancelled 2018-03-23, S/N 101, built 1962 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 101
- Airframe hours: 5572
- Engines: P&W R-985-AN-1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Tall Towers Ag Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 20, 1988, 137 hours before
- Departed: PAGE, ND

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 5,791 total, 2,750 in this make and model, 5,557 as pilot in command, 162 in the last 90 days, 130 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 5 knots, gusting 10
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point 50 °F
- Altimeter: 29.00 inHg
- Observed at: FAR

## 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 19880618027399A](https://openairdocs.org/incident/19880618027399A), Jun 18, 1988: Scwzer G164, Ayr, ND, Substantial damage. Pilot blamed a wind gust raised a wing as he went under wires which caused the wing to hit wires and crash.

## Other investigations on N455Y (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 CEN14LA319](https://openairdocs.org/ntsb/CEN14LA319), Jun 20, 2014: Grumman G 164 (N455Y), Anadarko, OK, substantial damage. Probable cause: The total loss of engine power while climbing after takeoff for reasons that could not be determined based on the available information.

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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