# NTSB FTW86LA113: Grumman G-164, N48398, Palacios, TX, June 19, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 19, 1986, 08:45 local (13:45 UTC)
- Place: Palacios, TX
- Coordinates: 28.709655, -96.229171 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=28.7097&lon=-96.2292&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 22043
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86LA113
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22043/pdf
- Page: https://openairdocs.org/ntsb/FTW86LA113

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - terrain condition - wet (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - load jettison - performed, pilot in command (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - high vegetation

## Analysis

DURING THE GROUND RUN PORTION OF THE TAKEOFF, THE ACFT CONTACTED A MUD HOLE WHICH RESULTED IN IT VEERING OFF THE GRASS AND INTO BUSHES ALONGSIDE THE STRIP. THE PLT DID NOT SELECT SUITABLE TERRAIN FOR THE TAKEOFF.

## Aircraft

- Registration: [N48398](https://openairdocs.org/deregistered/N48398-2017-06-19), registration cancelled 2017-06-19, S/N 14B, built 1976 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane
- Serial number: 14B
- Airframe hours: 3308
- Engines: P&W R-985-AN1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Riceland Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 25, 1986, 400 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 7,009 total, 310 in this make and model, 6,979 as pilot in command, 200 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: 20,000 ft broken
- Temperature: 79 °F, dew point 75 °F
- Altimeter: 29.00 inHg
- Observed at: PSX, 4 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 19860619026689A](https://openairdocs.org/incident/19860619026689A), Jun 19, 1986: Scwzer G164B, Palacios, TX, Substantial damage. On takeoff roll aircraft struck a mud hole. Directional control was lost and aircraft veered into bushes.

## Other investigations on N48398 (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 FTW95FA047](https://openairdocs.org/ntsb/FTW95FA047), Nov 16, 1994: Grumman-Schweizer G-164B (N48398), Wisner, LA, substantial damage, 1 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN MINIMUM REQUIRED AIRSPEED FOR FLIGHT. A FACTOR WAS THE PILOT'S LACK OF TOTAL EXPERIENCE IN THE TYPE OF AIRCRAFT.

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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