# NTSB OAK76AP013: Schweizer SGS233, N7787S, Calistoga, CA, October 6, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: October 6, 1975
- Place: Calistoga, CA · CALISTOGA, CA
- Location: 38.5814° N, 122.5827° W: Placed by OpenAirDocs: center of Calistoga, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.5814&lon=-122.5827&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report November 19, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151250
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76AP013
- Page: https://openairdocs.org/ntsb/OAK76AP013

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3008   75/10/6   CALISTOGA,CA        SCHWEIZER SGS233    CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 30, 203
        TIME - 1050                    N7787S              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 11 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CALISTOGA
        DEPARTURE POINT             INTENDED DESTINATION
          CALISTOGA,CA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - PSYCHOLOGICAL CONDITION
           MISCELLANEOUS - SUICIDE
        REMARKS- TAPE RECORDING LEFT BY PLT AS EVIDENCE. DOVE INTO CANYON WALL.
```

## Aircraft

- Registration: [N7787S](https://openairdocs.org/deregistered/N7787S-1975-12-15), registration cancelled 1975-12-15, S/N 157 (OpenAirDocs)
- Reported make and model: SCHWEIZER SGS233
- Registry model: [Schweizer SGS 2-33A](https://openairdocs.org/model/schweizer-sgs-2-33a) (registry code 8051606) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Destroyed
- Airport: Calistoga

## 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 19751006035299A](https://openairdocs.org/incident/19751006035299A), Oct 6, 1975: Scwzer SGS233A, Calistoga, CA, Destroyed. Tape recording left by plt as evidence. Dove into canyon wall.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.