# NTSB DEN86LA220: Grumman G-164A, N5324, Center, CO, August 5, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 5, 1986, 09:34 local (15:34 UTC)
- Place: Center, CO
- Coordinates: 37.749305, -106.110389 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.7493&lon=-106.1104&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 17027
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA220
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17027/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA220

## Sequence of events

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

- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - crop (contributing factor)
  - proper alignment - not maintained, pilot in command (cause)
- Loss of control - on ground/water, landing - roll
  - directional control - not possible
  - ground loop/swerve - uncontrolled
- Main gear collapsed, landing
  - landing gear,main gear - overload

## Analysis

THE PLT REPORTED THAT HE WAS LANDING ON A 50 FT WIDE DIRT STRIP AND ALLOWED THE ACFT TO DRIFT TO THE LEFT DURING THE LANDING ROLL. THE LEFT WING COLLIDED WITH WHEAT GROWING ALONG THE LEFT SIDE OF THE STRIP AND THE ACFT SWERVED FURTHER TO THE LEFT. DURING THE SWERVE, THE RIGHT MAIN LANDING GEAR FAILED & THE WINGS WERE DAMAGED.

## Aircraft

- Registration: [N5324](https://openairdocs.org/deregistered/N5324-2014-01-23), registration cancelled 2014-01-23, S/N 606, built 1969 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a) (registry code 3952704) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 606
- Airframe hours: 3800
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Slv Crop Care, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 31, 1986, 96 hours before
- Airport: Private Ag Strip

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 7,800 total, 2,950 in this make and model, 125 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 75 statute miles
- Lowest ceiling: none
- Temperature: 64 °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 19860805037469A](https://openairdocs.org/incident/19860805037469A), Aug 5, 1986: Scwzer G164A, Center, CO, Substantial damage. During landing, the spraybar of the aircraft caught in wheat. Right main gear collapsed during uncontrolled turn.

## Other investigations on N5324 (3)

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 CEN13LA443](https://openairdocs.org/ntsb/CEN13LA443), Jul 29, 2013: Grumman G-164A (N5324), Monte Vista, CO, substantial damage. Probable cause: The partial loss of engine power due to a fatigue failure of the engine cylinder exhaust rocker housing as a result of an excessively torqued rocker assembly.
- [NTSB FTW70FRA36](https://openairdocs.org/ntsb/FTW70FRA36), Jun 26, 1970: Grumman G-164A (N5324), Rosharon, TX, substantial damage
- [NTSB FTW69D0501](https://openairdocs.org/ntsb/FTW69D0501), May 9, 1969: Grumman G-164A (N5324), Rosharon, TX, substantial damage

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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