# NTSB CHI80DEM34: Schweizer 2-33A, N17969, Frankfort, MI, July 5, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 5, 1980
- Place: Frankfort, MI · FRANKFORT, MI
- Location: 44.6368° N, 86.2320° W: Placed by OpenAirDocs: center of Frankfort, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.6368&lon=-86.2320&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 30, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 129773
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI80DEM34
- Page: https://openairdocs.org/ntsb/CHI80DEM34

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1116   80/7/5    FRANKFORT,MI        SCHWEIZER 2-33A     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 58, 1253
        TIME - 1200                    N17969              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 223 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - FRANKFORT
        DEPARTURE POINT             INTENDED DESTINATION
          FRANKFORT,MI                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
           TERRAIN - HIGH OBSTRUCTIONS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                 8000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      75
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          340                                                       30
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- PLT STATED WIND VEL SUDDENLY INC TO 50KTS.
```

## Aircraft

- Registration: [N17969](https://openairdocs.org/aircraft/N17969), registered now, S/N 269, built 1973 (OpenAirDocs)
- Reported make and model: SCHWEIZER 2-33A
- Registry model: [Schweizer SGS 2-33A](https://openairdocs.org/model/schweizer-sgs-2-33a) (registry code 8051606) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Frankfort

## 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 19800705025369A](https://openairdocs.org/incident/19800705025369A), Jul 5, 1980: Scwzer SGS233A, Frankfort, MI, Substantial damage. Surface wind increased during glider approach for landing. Landed short of runway. Hit trees.

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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