# Accident 19960518010759A: AS+ AC 4, Hartford, WI, May 18, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 18, 1996, 15:00 local time
- Place: Hartford, WI
- Airport: Hartford Municipal Airport
- Damage: Substantial damage
- Operating rules: General operating rules (Part 91)
- Location: 43.3191° N, 88.3799° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.3191&lon=-88.3799&mi=10
- Aircraft: N29HS, registered now (https://openairdocs.org/aircraft/N29HS) (OpenAirDocs)
- Registry model: AS+ AC 4 (registry code 05628R1, https://openairdocs.org/model/as-plus-ac-4) (OpenAirDocs)
- Registry engine: NONE (registry code 00000, https://openairdocs.org/engine/none) (OpenAirDocs)
- Fatal injuries: 0
- NTSB investigation: [NTSB CHI96LA165](https://openairdocs.org/ntsb/CHI96LA165) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19960518010759A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON TEST FLIGHT, GLIDER STARTED TO SPIN, NO CONTROLS, INVERTED, PILOT BAILED OUT, CRASHED SHORT OF AIRPORT. (-23) ON MAY 18, 1996, AT 1500 CST, AN AS+ LTD AC-4, RUSSIAN BUILT GLIDER, N29HS, OPERATED BY SCOTT L. DIZACK, WAS PERFORMING THE FIRST FLIGHT OF A FAA FLIGHT TEST PROGRAM REQUIREMENT PER OPERATING LIMITATIONS, DATED MAY 17, 1996, IN THE VICINITY OF THE HARTFORD, WISCONSIN AIRPORT (HXF). THE AIRCRAFT WAS RELEASED FROM THE TOW AIRCRAFT AT 4,000 FEET AGL AND INITIATED ITS PLANNED MANEUVERS. AS PART OF THE MANEUVERS THE GLIDER ENTERED INTO A SPIRAL CONFIGURATION (SPIN) WHEN THE PILOT EXPERIENCED A NOSE DOWN PITCH ATTITUDE OF APPROXIMATELY 10 TO 15 DEGREES WITH AN IMMEDIATE INCREASE OF AIRSPEED TO APPROXIMATELY 125 KIAS. THE PILOT STATED THAT HE OBSERVED THE WINGS TO BE OSCILLATING UP AND DOWN AND THE AIRCRAFT UNRESPONSIVE TO ANY PITCH UP INPUT WITH FULL BACK PRESSURE ON THE STICK. AT APPROXIMATELY 1500 FEET AGL THE AIRCRAFT ROLLED INTO AN INVERTED POSITION; THE PILOT BAILED OUT, DEPLOYED THE PARACHUTE AND LANDED IN THE IMMEDIATE AREA OF THE AIRPORT HAVING SUSTAINED A DISLOCATED RIGHT SHOULDER AND SEVERAL FRACTURED VERTEBRAE OF THE LOWER                                            BACK AS A RESULT OF THIS ACCIDENT. THE GLIDER CAME TO REST UPSIDE DOWN IN A FIELD APPROXIMATELY 250 YEARS SOUTH OF THE HARTFORD, WI (HXF) AIRPORT AND WAS SUBSTANTIALLY DAMAGED.

## The NTSB's investigation of this event (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 CHI96LA165](https://openairdocs.org/ntsb/CHI96LA165), May 18, 1996: AS+ AC 4 (N29HS), Hartford, WI, substantial damage. Probable cause: lack of airspeed control by the pilot, while maneuvering.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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