# NTSB LAX83LA425: Boeing E75, N4756V, Tracy, CA, August 20, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 20, 1983, 08:30 local (15:30 UTC)
- Place: Tracy, CA
- Coordinates: 37.730091, -121.419319 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.7301&lon=-121.4193&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 23844
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA425
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23844/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA425

## Sequence of events

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

- In flight collision with terrain/water, cruise
  - spray/dusting equipment - leak (contributing factor)
  - diverted attention, pilot in command (cause)
  - proper altitude - not maintained, pilot in command (cause)
  - terrain condition - high vegetation (contributing factor)
  - clearance - misjudged, pilot in command (cause)

## Analysis

WHILE ON A FLT TO DISPENSE ORTHENE, A FILL LINE BEGAN LEAKING INTO THE COCKPIT. AFTER DISPENSING THE LOAD & WHILE RETURNING TO THE LANDING AREA AT ABOUT 30 FT AGL, THE PLT REACHED BELOW THE SEAT TO CHECK THE LEAK. WHILE HE WAS BENDING OVER TO LOCATE THE LEAK, THE ACFT FLEW INTO A BEAN FIELD. HE STATED THAT BEFORE HE LOOKED BACK OUT OF THE ACFT, THE RIGHT WING CAUGHT THE BEAN VINES & PULLED THE PLANE INTO THE FIELD.

## Aircraft

- Registration: N4756V (not matched to a registry record)
- Reported make and model: BOEING E75
- Category: Airplane
- Serial number: 75-5102
- Airframe hours: 11657
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Trinkle And Boys
- Last inspection: 100 hour, August 1, 1983, 3 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,600 total, 2,100 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F
- Altimeter: 29.00 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 19830820047229A](https://openairdocs.org/incident/19830820047229A), Aug 20, 1983: Boeing A75, Tracy, CA, Substantial damage. Looked inside cockpit to find hose leak off of toxic chemical load. Aircraft flew into the ground.

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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