# NTSB OAK74DVG41: Schweizer SGU222, N2764R, Shingle Spg, CA, April 14, 1974

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 14, 1974
- Place: Shingle Spg, CA · SHINGLE SPG, CA
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 6, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186394
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVG41
- Page: https://openairdocs.org/ntsb/OAK74DVG41

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0734  74/4/14    SHINGLE SPG,CALIF   SCHWEIZER SGU222    CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1630                    N2764R              PX-  0  0  0  DUAL                      AGE 23, 152 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            40 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - ALTAIR-CAMERON
        DEPARTURE POINT             INTENDED DESTINATION
          SHINGLE SPG,CALIF           LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
```

## Aircraft

- Registration: [N2764R](https://openairdocs.org/deregistered/N2764R-2023-06-10), registration cancelled 2023-06-10, S/N 171, built 1963 (OpenAirDocs)
- Reported make and model: SCHWEIZER SGU222
- Registry model: [Schweizer SGU 2-22E](https://openairdocs.org/model/schweizer-sgu-2-22e) (registry code 8050612) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Altair-Cameron

## 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 19740414007979A](https://openairdocs.org/incident/19740414007979A), Apr 14, 1974: Scwzer SGU222E, Shingle Spg, CA, Substantial damage

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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