# NTSB CHI84LA251: Halfpap Varieze, N8477T, Quincy, IL, June 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 18, 1984, 19:30 local (Jun 19, 1984, 00:30 UTC)
- Place: Quincy, IL
- Coordinates: 39.930625, -91.380363 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9306&lon=-91.3804&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12661
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LA251
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12661/pdf
- Page: https://openairdocs.org/ntsb/CHI84LA251

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - flare - improper, pilot in command (cause)
- Main gear collapsed, landing - roll
  - landing gear,main gear - overload (contributing factor)

## Analysis

THE ACFT EXPERIENCED A COLLAPSE OF THE MAIN LANDING GEAR AFTER A HARD LANDING. THE PLT REPORTED INITIALLY THAT HE MADE AHARD LANDING AND STATED THAT WHEN HE APPLIED THE BRAKES THE LANDING GEAR COLLAPSED. THE PLT WAS GIVEN TWO NTSB 6120.1 FORMS BY THE FAA. NEITHER FORM WAS COMPLETED AND RETURNED TO THE NTSB.

## Aircraft

- Registration: N8477T (not matched to a registry record)
- Reported make and model: HALFPAP VARIEZE
- Category: Airplane, amateur-built
- Serial number: 817
- Engines: UNKNOWN UNKNOWN reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Seigfried Halfpap
- Airworthiness certificate: Special, Experimental (Special)
- Departed: 8H2, QUINCY, IL
- Airport: 8H2, Siegfried, runway 20, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 67; private; airplane ratings: single-engine land

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 6 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: UIN, 10 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 19840618025909A](https://openairdocs.org/incident/19840618025909A), Jun 18, 1984: Amtrru VARIEZE, Quincy, IL, Substantial damage. The landing gear collapsed on the rollout on applying the brake after a hard landing. No medical certificate.

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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