# NTSB SEA82DA083: Grumman G-164A, N7365, Dayton, WA, June 9, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: June 8, 1982, 17:20 local (Jun 9, 1982, 00:20 UTC)
- Place: Dayton, WA
- Coordinates: 46.309814, -117.900192 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.3098&lon=-117.9002&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 8, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70420
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA82DA083
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70420/pdf
- Page: https://openairdocs.org/ntsb/SEA82DA083

## Analysis

THE PILOT HAD JUST RETURNED TO THE AREA AFTER PICKING UP A LOAD OF DI-SYSTON. ANOTHER AG AIRCRAFT HAD BEEN SPRAYING IN AN ADJACENT FIELD. THE PILOT CIRCLED AND LOOKED FOR THE OTHER AIRCRAFT, BUT DID NOT SEE IT. HE STATED THAT HE CHECKED THE SMOKE TO DETERMINE THE WIND DIRECTION AND LET DOWN. JUST AS THE AIRCRAFT WAS TURNING ACROSS A CREEK, IT ENTERED A DOWNDRAFT AND/OR A CROSSWIND AND BEGAN TO LOSE ALTITUDE. THE PILOT REPORTED THAT HE COULD SEE HE WAS GOING TO HIT THE GROUND, SO INSTEAD OF STALLING, HE KEPT HIS SPEED UP AND TOUCHED DOWN IN A THREE POINT ATTITUDE. THE MAIN GEAR ENCOUNTERED SOFT TERRAIN AND THE AIRCRAFT FLIPPED OVER. THE PILOT REPORTED THAT THE WINDS WERE FROM 5 TO 10 KNOTS WITH GUSTS.

## Sequence of events

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

- In flight collision with terrain/water, maneuvering - aerial application
  - weather condition - gusts (contributing factor)
  - weather condition - downdraft (contributing factor)
  - clearance - misjudged, pilot in command (cause)
  - diverted attention, pilot in command (contributing factor)
  - terrain condition - soft (contributing factor)
- Nose over, maneuvering - aerial application

## Aircraft

- Registration: [N7365](https://openairdocs.org/deregistered/N7365-2013-05-07), registration cancelled 2013-05-07, S/N 934, built 1972 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 934
- Airframe hours: 3825
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Operator: Inland Airservice
- Registered owner: Inland Airservice
- Departed: DAYTON, WA
- Destination: DAYTON, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 9,580 total, 154 in this make and model, 9,420 as pilot in command, 250 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 10 knots
- Visibility: 15 statute miles
- Temperature: 158 °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 19820608022669A](https://openairdocs.org/incident/19820608022669A), Jun 8, 1982: Grumav G164A, Dayton, WA, Destroyed. Encountered downdraft on a spray run. Elected to land to avoid a hill on climb out. Flipped over in soft ground.

## Other investigations on N7365 (2)

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 SEA78DYA24](https://openairdocs.org/ntsb/SEA78DYA24), Sep 1, 1978: Grumman G-164A (N7365), Oakley, ID, substantial damage
- [NTSB SEA75DYA04](https://openairdocs.org/ntsb/SEA75DYA04), Jul 14, 1974: Grumman G-164A (N7365), Burley, ID, 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.

---
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.