# NTSB CHI92DTG03: Grumman G-164A, N9935, Orr, ND, June 24, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 24, 1992, 10:30 local (15:30 UTC)
- Place: Orr, ND
- Coordinates: 48.149208, -97.640312 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.1492&lon=-97.6403&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15259
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92DTG03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15259/pdf
- Page: https://openairdocs.org/ntsb/CHI92DTG03

## Probable cause

A STALL ENCOUNTERED DURING THE SPRAY RUN REVERSAL TURN.  FACTORS RELATED TO THE ACCIDENT ARE THE ATTEMPTED DOWNWIND TURN, AND INSUFFICIENT ALTITUDE FOR RECOVERY.

## Sequence of events

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

- Loss of control - in flight, maneuvering - aerial application
  - weather condition - unfavorable wind (contributing factor)
  - stall - encountered, pilot in command (cause)
  - altitude - inadequate (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - crop

## Analysis

THE AERIAL APPLICATOR HAD JUST COMPLETED A SPRAY RUN AND ATTEMPTED TO PULL UP AND MAKE THE REVERSAL TURN AT THE DOWNWIND END OF THE FIELD. THE AIRCRAFT STALLED IN THE TURN AND FELL OFF ON THE LEFT WING. THE LEFT WING HIT THE GROUND, AND THE AIRCRAFT CRASHED.

## Aircraft

- Registration: [N9935](https://openairdocs.org/deregistered/N9935-2012-11-27), registration cancelled 2012-11-27, S/N 1338, built 1974 (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 R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1338
- Airframe hours: 3800
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Jerome V. Bakke, doing business as Bakke'S Flying Service
- Registered owner: Bakke, Vance J.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, January 22, 1992, 130 hours before
- Departed: 61ND, LARIMORE, ND
- Destination: 61ND

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 860 total, 60 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: 1,200 ft overcast
- Temperature: 63 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: GFK, 23 nm away

## 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 19920624022789A](https://openairdocs.org/incident/19920624022789A), Jun 24, 1992: Scwzer G164A, Orr, ND, Substantial damage. Stalled on downwind procedure turn after a swath run. Left wing hit ground. Aircraft flipped over.

## Other investigations on N9935 (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 FTW78DRA27](https://openairdocs.org/ntsb/FTW78DRA27), Jun 12, 1978: Grumman G-164A (N9935), Alvin, TX, destroyed

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.