# NTSB CHI66F0012: Schweizer SGU222, N10399, Bay City, WI, June 18, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 18, 1966
- Place: Bay City, WI · BAY CITY, WI
- Location: 44.5893° N, 92.4535° W: Placed by OpenAirDocs: center of Bay City, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.5893&lon=-92.4535&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 August 22, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 171476
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI66F0012
- Page: https://openairdocs.org/ntsb/CHI66F0012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0182  66/6/18    BAY CITY WIS        SCHWEIZER SGU222    CR-  0  1  0  NONCOMMERCIAL             STUDENT, AGE 51, 15 TOTAL
        TIME - 1330                    N10399              PX-  0  0  0  PRACTICE                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - RED WING MUNICIPA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: GLIDER LAUNCH/TOW EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- TOW LINE BROKE DURING STEEP PULL UP BY PILOT,TOWCAR HAD PREVIOUSLY RUN OVER AND DAMAGED TOWLINE.
```

## Aircraft

- Registration: [N10399](https://openairdocs.org/deregistered/N10399-2013-08-05), registration cancelled 2013-08-05, S/N 144, built 1962 (OpenAirDocs)
- Reported make and model: SCHWEIZER SGU222
- Registry model: [Schweizer SGU 2-22C](https://openairdocs.org/model/schweizer-sgu-2-22c) (registry code 8050608) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Destroyed
- Airport: Red Wing Municipa

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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