# NTSB LAX84LA338: Grumman G-164B, N6708K, Tracy, CA, June 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 7, 1984, 05:40 local (12:40 UTC)
- Place: Tracy, CA
- Coordinates: 37.729763, -121.41996 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.7298&lon=-121.4200&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24301
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX84LA338
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24301/pdf
- Page: https://openairdocs.org/ntsb/LAX84LA338

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - engine assembly,cylinder - cracked (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - high vegetation (contributing factor)
- Nose over, landing - flare/touchdown

## Analysis

THE ACFT LOST POWER DURING TAKEOFF & NOSED OVER IN A WHEAT FIELD. AN EXAM REVEALED THAT THE #7 CYLINDER HEAD WAS CRACKED FROM THE REAR SPARK PLUG HOLE, 3/4 OF THE CIRCUMFERENCE AROUND THE EXHAUST VALVE.

## Aircraft

- Registration: [N6708K](https://openairdocs.org/deregistered/N6708K-1991-10-29), registration cancelled 1991-10-29, S/N 374B (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Category: Airplane
- Serial number: 374V
- Airframe hours: 2581
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Haley Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, April 17, 1984, 70 hours before
- Airport: Paradise Strip, runway 27, 1,800 ×  ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: multi-engine land, single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 2,846 in this make and model

## Weather

- Conditions: Visual (VMC), Dawn
- Wind: 270° at 3 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 52 °F, dew point 50 °F
- Altimeter: 30.00 inHg
- Observed at: SCK, 11 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 19840607023059A](https://openairdocs.org/incident/19840607023059A), Jun 7, 1984: Scwzer G164B, Tracy, CA, Substantial damage. Crash occurred during emergency landing after engine failure during take off.

## Other investigations on N6708K (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 LAX90DUG05](https://openairdocs.org/ntsb/LAX90DUG05), Apr 19, 1990: Grumman G-164B (N6708K), Blythe, CA, destroyed, 1 fatal. Probable cause: FAILURE OF THE PILOTS OF N6708K AND N10222 TO MAINTAIN ADEQUATE VISUAL LOOKOUT AND FAILURE OF THE PILOT OF N6708K TO FOLLOW A PREARANGED PROCEDURE FOR REVERSING THE DIRECTION OF FLIGHT.
- [NTSB LAX83LA464](https://openairdocs.org/ntsb/LAX83LA464), Sep 30, 1983: Grumman 164B (N6708K), Tracy, 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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