# NTSB SEA83LA143: Grumman G-164A, N9536, Waitsburg, WA, June 29, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 28, 1983, 17:45 local (Jun 29, 1983, 00:45 UTC)
- Place: Waitsburg, WA
- Coordinates: 46.219127, -118.150253 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.2191&lon=-118.1503&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): 39723
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA143
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39723/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA143

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - landing gear,normal brake system - locked (cause)
- Nose over, landing - roll

## Analysis

THE ACFT GROUNDLOOPED INTO SOFT DIRT AND NOSED OVER AFTER A BRAKE MALFUNCTION. THE PILOT STATED THAT UPON LANDING THE LEFT BRAKE LOCKED. THE PILOT TRIED TO MAINTAIN DIRECTIONAL CONTROL WITH RUDDER AND POWER. THE ACFT VEERED RIGHT INTO SOFT DIRT AND CAME REST INVERTED.

## Aircraft

- Registration: [N9536](https://openairdocs.org/deregistered/N9536-2000-06-12), registration cancelled 2000-06-12, S/N 1191 (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)
- Category: Airplane
- Serial number: 1191
- Airframe hours: 2900
- Engines: P&W R1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Cropland Air Service Inc.
- Airworthiness certificate: Special, Limited (Special)
- Last inspection: Annual, January 18, 1983
- Departed: WAITSBURG, WA
- Destination: WAITSBURG, WA
- Airport: Cropland Air 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; seat: center; flight hours: 15,000 total, 7,000 in this make and model, 180 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 7 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 48 °F
- Altimeter: 29.00 inHg
- Observed at: ALW, 12 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 19830629028319A](https://openairdocs.org/incident/19830629028319A), Jun 29, 1983: Scwzer G164A, Waitsburg, WA, Substantial damage. Pilot reported the left brake locked on landing. The aircraft ran off the runway and nosed over. Parking brake on.

## Other investigations on N9536 (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 SEA93LA198](https://openairdocs.org/ntsb/SEA93LA198), Sep 13, 1993: Grumman-Schweizer G164A (N9536), Dayton, WA, destroyed. Probable cause: THE PILOT IN COMMAND'S FAILURE TO MAINTAIN PROPER CLEARANCE FROM THE POWER LINES. THE UNMARKED POWER LINES WERE A FACTOR.

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.