# NTSB CHI93DEX01: Zeigler Moni, N10GZ, Seymour, IN, May 6, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: May 6, 1993, 09:45 local (14:45 UTC)
- Place: Seymour, IN
- Coordinates: 38.95021, -85.879127 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9502&lon=-85.8791&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 August 17, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 9147
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93DEX01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9147/pdf
- Page: https://openairdocs.org/ntsb/CHI93DEX01

## Probable cause

an inadvertent stall. Factors relating to the accident are the major alteration of the airframe, and failure of the pilot-in- command to obtain new performance data.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - maintenance,major alteration - performed, pilot in command (contributing factor)
  - performance data - not obtained, pilot in command (contributing factor)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

The pilot stated the airplane stalled shortly after takeoff at an altitude of 50 feet, and then contacted the ground. Each wing of the experimental airplane had been shortened by 3 feet, and a heavier landing gear installed by the builder, who was also the pilot.  No adjustment to performance data had been done.

## Factual narrative

On May 6, 1993, at 0945, eastern standard time, a Zeigler Moni homebuilt airplane, N10GZ, sustained substantial damage when the pilot lost control and crashed on takeoff at the Freeman Municipal Airport, Seymour, Indiana.  The private pilot, and sole occupant of the airplane, received minor injuries.  No flight plan was filed for the local flight, and visual meteorological conditions prevailed at the time.

The pilot stated the airplane stalled after takeoff at an altitude of about 50 feet, and contacted the ground in a nose- down attitude.

The airplane had been modified by the pilot, who was also the builder.  Each wing had been shortened by 3 feet, and a heavier landing gear had been installed.  No adjustment had been made to the performance data for the airplane to compensate for the increased weight or shortened wings.  The airplane had not been recertificated in this configuration.

## Aircraft

- Registration: [N10GZ](https://openairdocs.org/deregistered/N10GZ-1993-09-16), registration cancelled 1993-09-16, S/N 00023, built 1984 (OpenAirDocs)
- Reported make and model: ZEIGLER MONI
- Registry model: [Zeigler Gary L MONNETT MONI](https://openairdocs.org/model/zeigler-gary-l-monnett-moni) (registry code 05647XL) (OpenAirDocs)
- Registry engine: [Kawasaki ALL MDLS A/B](https://openairdocs.org/engine/kawasaki-all-mdls-a-b) (registry code 35500, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 0023
- Airframe hours: 100
- Engines: IAME 107E 30 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Gary L. Zeigler
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, April 25, 1993, 1 hours before
- Airport: SER, Freeman Muni, runway 5, 5,500 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: center; flight hours: 300 total, 100 in this make and model, 260 as pilot in command, 10 in the last 90 days, 5 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 9 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 68 °F, dew point 57 °F
- Altimeter: 30.00 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 19930506012409A](https://openairdocs.org/incident/19930506012409A), May 6, 1993: Amtr MONI, Seymour, IN, Substantial damage. Stalled on takeoff 50 feet AGL. Had shortened wings and installed heavier landing gear. Not recertified airworthy.

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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