# NTSB NYC77FHA15: Schweizer SGS233, N33993, Erwinna, PA, February 16, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 16, 1977
- Place: Erwinna, PA · ERWINNA, PA
- Location: 40.5007° N, 75.0727° W: Placed by OpenAirDocs: center of Erwinna, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.5007&lon=-75.0727&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157706
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC77FHA15
- Page: https://openairdocs.org/ntsb/NYC77FHA15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0418  77/2/16    ERWINNA,PA          SCHWEIZER SGS233    CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE UNK/NR, 60
        TIME - 1230                    N33993              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - VAN SANT
        DEPARTURE POINT             INTENDED DESTINATION
          ERWINNA,PA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: PARKED AIRCRAFT                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        REMARKS- N6393T, SUBSTANTIAL DMG. TOWED ACFT HIT PARKED ACFT
```

## Aircraft

- Registration: [N33993](https://openairdocs.org/deregistered/N33993-2016-04-12), registration cancelled 2016-04-12, S/N 409, built 1975 (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)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Van Sant

## 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 19770216001119A](https://openairdocs.org/incident/19770216001119A), Feb 16, 1977: Scwzer SGS233A, Erwinna, PA, Substantial damage. N6393T, substantial dmg. Towed acft hit parked acft

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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