# NTSB LAX83LA101: Grumman G164, N728Y, Avenal, CA, February 11, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 11, 1983, 10:30 local (18:30 UTC)
- Place: Avenal, CA
- Coordinates: 34.540706, -115.640083 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.5407&lon=-115.6401&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): 23613
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23613/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA101

## 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 - failure,partial (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
  - directional control - not possible, pilot in command (cause)
- Nose over, landing - roll
  - terrain condition - dirt bank/rising embankment (contributing factor)

## Analysis

DURING A LANDING AFTER A SPRAYING OPERATION, THE RIGHT BRAKE FAILED AND THE AIRCRAFT COLLIDED WITH A BERM BEFORE NOSING OVER. THE PILOT SAID THE RIGHT BRAKE FAILED TO KEEP AIRCRAFT ON THE RUNWAY WHEN THE RUDDER BECAME INEFFECTIVE. THE 'O' RING PART NUMBER AN 6227-11 WAS WORN CAUSING HYDRAULIC FLUID TO BYPASS THE BRAKE SYSTEM AND RETURN TO THE RESERVOIR.

## Aircraft

- Registration: [N728Y](https://openairdocs.org/deregistered/N728Y-2010-11-10), registration cancelled 2010-11-10, S/N 289, built 1964 (OpenAirDocs)
- Reported make and model: GRUMMAN G164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 289
- Airframe hours: 7634
- Engines: P&W R1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Pixley Dusters, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, September 10, 1982, 60 hours before
- Airport: runway 36, 2,600 ×  ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 6,600 total, 2,000 in this make and model, 5,590 as pilot in command, 300 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 63 °F, dew point 37 °F
- Altimeter: 30.00 inHg

## Other investigations on N728Y (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 LAX72DVA13](https://openairdocs.org/ntsb/LAX72DVA13), Aug 14, 1971: Grumman G-164 (N728Y), Buttnwillow, CA, 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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