# NTSB MIA93LA003: Mcilraith Steen Skybolt, N2GM, Hattiesburg, MS, October 4, 1992

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: October 4, 1992, 14:45 local (19:45 UTC)
- Place: Hattiesburg, MS
- Coordinates: 31.310338, -89.299636 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.3103&lon=-89.2996&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report October 15, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 33186
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA003
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33186/pdf
- Page: https://openairdocs.org/ntsb/MIA93LA003

## Probable cause

A LOSS OF CONTROL FOR UNDETERMINED REASONS.

## 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
  - reason for occurrence undetermined (cause)
- In flight collision with terrain/water, takeoff - initial climb

## Analysis

SHORTLY AFTER TAKEOFF THE AIRPLANE WAS OBSERVED TO INITIATE A SERIES OF SLOW ROLLS AT ABOUT 400-600 FT. DURING THE THIRD ROLL TO THE RIGHT, THE AIRPLANE DESCENDED & IMPACTED THE GROUND. EXAM OF THE AIRPLANE REVEALED NO EVIDENCE OF PREIMPACT FAILURE OR MALFUNCTION OF THE FLIGHT CONTROLS. NONE OF THE WITNESSES REPORTED HEARING ANY IRREGULARITY WITH THE ENG. THE PLT/OWNER WAS IN THE REAR SEAT & THE PRIVATE PILOT-RATED PILOT WAS IN THE FRONT SEAT. DUAL FLT & ENG CONTROLS WERE INSTALLED. NO DETERMINATION COULD BE MADE AS TO WHO WAS FLYING THE AIRPLANE. FOUND INSIDE THE WRECKAGE WAS A PIECE OF PAPER WITH A SEQUENCE OF AEROBATIC MANEUVERS DRAWN, WHICH BELONGED TO THE OWNER. NO COMMENTS ABOUT THE DEPARTURE BY EITHER OCCUPANT WERE MADE. THE ACFT WAS A MINIMUM OF 31.9 POUNDS OVER MAX GROSS WEIGHT. NO FORWARD OR AFT CG LIMITS AVAILABLE DUE TO THE OVERWEIGHT CONDITION. BOTH OCCUPANTS WERE WEARING PARACHUTES. A BAG WAS FOUND LODGED UNDER THE REAR SEAT'S RIGHT RUDDER PEDAL. A STORAGE COMPARTMENT WAS BEHIND THE REAR SEAT.

## Aircraft

- Registration: [N2GM](https://openairdocs.org/deregistered/N2GM-2015-05-04), registration cancelled 2015-05-04, S/N 1, built 1949 (OpenAirDocs)
- Reported make and model: MCILRAITH STEEN SKYBOLT (STEEN SKYB)
- Registry model: [Mcilraith STEEN SKYBOLT](https://openairdocs.org/model/mcilraith-steen-skybolt) (registry code 0563319) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1
- Airframe hours: 329
- Engines: FRANKLIN 6A-350-C1 220 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Rudd, J.R.
- Registered owner: Rudd, J.R.
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, August 28, 1992, 31 hours before
- Departed: HBG
- Destination: TALLAHASSEE, FL
- Airport: HBG, Bobby L. Chain Muni

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: rear; toxicology performed; flight hours: 29,500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 57 °F
- Altimeter: 29.00 inHg
- Observed at: PIB, 9 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 19921004039879A](https://openairdocs.org/incident/19921004039879A), Oct 4, 1992: Amtrsn SKYBOLT, Hattiesburg, MS, Destroyed, 2 fatal. Split s out of slow rolls on nose high slow speed climbout. Spun inverted, struck trees and impacted upright.

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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