# NTSB MKC90LA076: Grumman G-164B, N3630U, Newport, AR, March 28, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 27, 1990, 18:30 local (Mar 28, 1990, 00:30 UTC)
- Place: Newport, AR
- Coordinates: 35.619609, -91.230224 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.6196&lon=-91.2302&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 34952
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC90LA076
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34952/pdf
- Page: https://openairdocs.org/ntsb/MKC90LA076

## Probable cause

FAILURE OF THE PILOT TO MAINTAIN PROPER RUNWAY ALIGNMENT, WHICH RESULTED IN AN ENCOUNTER WITH SOFT/WET (MUDDY) TERRAIN AND A SUBSEQUENT NOSE OVER OF THE AIRCRAFT.

## Sequence of events

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

- On ground/water encounter with terrain/water, landing
  - proper alignment - not maintained, pilot in command (cause)
  - terrain condition - soft (contributing factor)
  - terrain condition - wet (contributing factor)
- Nose over, landing

## Analysis

THE COMMERCIAL PILOT SAID THAT WHILE LANDING, DURING AN AERIAL APPLICATION OPERATION, DIRECTIONAL CONTROL WAS LOST AND THE RIGHT LANDING GEAR ENCOUNTERED SOFT MUDDY CONDITIONS WHICH RESULTED IN A NOSE OVER.

## Aircraft

- Registration: [N3630U](https://openairdocs.org/aircraft/N3630U), registered now, S/N 760B (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- Registry model: [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b) (registry code 8059055) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 760B
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Mid-Continent Aircraft Corp.
- Registered owner: Unknown
- Departed: NONE, NEWPORT, AR
- Airport: NONE, Private, runway 17, 2,650 × 60 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,791 total, 2,400 in this make and model, 2,791 as pilot in command, 100 in the last 90 days, 60 in the last 30 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: -0 °F, dew point -0 °F
- Observed at: JBR, 30 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 19900327007969A](https://openairdocs.org/incident/19900327007969A), Mar 27, 1990: Scwzer G164B, Newport, AR, Substantial damage. Lost directional control landing, right main wheel encountered soft mud and aircraft nosed over.

## Other investigations on N3630U (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 FTW92DPG11](https://openairdocs.org/ntsb/FTW92DPG11), Aug 4, 1992: Grumman G-164B (N3630U), Fouke, AR, substantial damage. Probable cause: THE PILOT'S SELECTION OF UNSUITABLE TERRAIN FOR TAKEOFF. FACTORS WERE THE TREES AND THE SOFT FIELD.

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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