# NTSB MKC83LA157: Gyaki Skybolt, N710T, St. Charles, MO, July 16, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 16, 1983, 12:49 local (17:49 UTC)
- Place: St. Charles, MO
- Coordinates: 38.789405, -90.509796 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7894&lon=-90.5098&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33445
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC83LA157
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33445/pdf
- Page: https://openairdocs.org/ntsb/MKC83LA157

## Sequence of events

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

- Loss of engine power, cruise - normal
  - fuel system,cap - improper (contributing factor)
  - reason for occurrence undetermined (cause)
- Forced landing, landing - flare/touchdown
  - landing gear - overload (contributing factor)

## Analysis

THE HOME-BUILT ACFT WAS ON A LOCAL PLEASURE FLT NEAR THE ARPT WHEN THE ENGINE QUIT AND A FORCED LANDING WAS MADE IN A WHEATFIELD. INVESTIGATION OF THE ENGINE AND FUEL SYSTEM BY AN FAA INSPECTOR REVEALED THAT THE VENT IN THE FUEL CAP WAS SOLDERED SHUT AND THE FUEL VENT SYSTEM FOR THE INVERTED FUEL SYSTEM WAS DAMAGED ON IMPACT TO THE EXTENT THAT IT WAS IMPOSSIBLE TO DETERMINE IF THE INVERTED VENT SYSTEM WAS OPERABLE.

## Aircraft

- Registration: [N710T](https://openairdocs.org/deregistered/N710T-2013-06-05), registration cancelled 2013-06-05, S/N 1 (OpenAirDocs)
- Reported make and model: GYAKI SKYBOLT
- Registry model: [Gyaki Joseph A SKYBOLT](https://openairdocs.org/model/gyaki-joseph-a-skybolt) (registry code 05655AX) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1
- Engines: LYCOMING O-360 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Joseph A. Gyaki
- Departed: 3SQ, ST. CHARLES, MO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 225 total, 45 in this make and model, 175 as pilot in command, 15 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 8 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 93 °F

## 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 19830716033059A](https://openairdocs.org/incident/19830716033059A), Jul 16, 1983: Amtrsn SKYBOLT, St Charles, MO, Substantial damage. Crash occurred during emergency landing when engine quit due to inadequate fuel vent.

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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