# NTSB CHI83LA223: Schreder HP12A, N544J, Stanton, MN, May 21, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: May 21, 1983, 15:30 local (20:30 UTC)
- Place: Stanton, MN
- Location: 44.4719° N, 93.0230° W: Placed by OpenAirDocs: center of Stanton, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.4719&lon=-93.0230&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12183
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LA223
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12183/pdf
- Page: https://openairdocs.org/ntsb/CHI83LA223

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - flight control,elevator attachment - improper (cause)
  - maintenance,installation - improper, pilot in command (cause)
  - flight control,elevator attachment - improper (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT PERFORMED HIS PREFLIGHT CHECKS INCLUDING A FLIGHT CONTROL CHECK. AFTER LIFT OFF THE PILOT COULD NOT CONTROL THE PITCH OF THE GLIDER. AS THE PITCH INCREASED TO ABOUT 30 DEGREES HE ELECTED TO RELEASE THE TOW CABLE FROM THE TOW AIRCRAFT. THE GLIDER STALLED AND 'FELL OVER ON RIGHT WING' AT ABOUT 50 TO 100 FEET AND CONTACTED THE GROUND AT ABOUT A 40 DEGREE NOSE LOW ATTITUDE. EXAMINATION REVEALED THAT THE RUDDERVATOR WAS NOT PROPERLY INSTALLED.

## Aircraft

- Registration: N544J (not matched to a registry record)
- Reported make and model: SCHREDER HP12A
- Category: Glider, amateur-built
- Serial number: 056035L
- Engines: NONE unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Minnesota Soaring Club
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, May 13, 1983, 0 hours before
- Airport: SYN, Carlton, runway 18, 2,560 × 308 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 4,096 total, 3 in this make and model, 10 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 12 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point 54 °F
- Altimeter: 29.00 inHg
- Observed at: MSP, 27 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 19830521020499A](https://openairdocs.org/incident/19830521020499A), May 21, 1983: Amtr HP12A, Stanton, MN, Substantial damage. Assembled ruddervator incorrectly. Pitch up on tow. Cut loose and stalled 45 degree nose and wing down ground impac

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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