# NTSB LAX77DUJ47: Schweizer SGS233, N7705S, Phoenix, AZ, May 4, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 4, 1977
- Place: Phoenix, AZ · PHOENIX, AZ
- Location: 33.4484° N, 112.0740° W: Placed by OpenAirDocs: center of Phoenix, AZ, within about 13 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.4484&lon=-112.0740&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 10, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 158357
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX77DUJ47
- Page: https://openairdocs.org/ntsb/LAX77DUJ47

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0778   77/5/4  NR.PHOENIX,AZ         SCHWEIZER SGS233    CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 19, 8 TOTAL
        TIME - 1230                    N7705S              PX-  0  0  0  TRAINING                  HOURS, 5 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - PLEASANT VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
         PHOENIX,AZ                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: OBJECT                                    LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
           TERRAIN - HIGH VEGETATION
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
           WEATHER - LOCAL WHIRLWIND
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      80
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          225                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- SINGLE WHEEL.STRUCK A CACTUS.GUSTS TO 15 KNOTS.
```

## Aircraft

- Registration: [N7705S](https://openairdocs.org/deregistered/N7705S-1989-01-26), registration cancelled 1989-01-26, S/N 125 (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: Substantial damage
- Airport: Pleasant Valley

## 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 19770504010099A](https://openairdocs.org/incident/19770504010099A), May 4, 1977: Scwzer SGS233A, Phoenix, AZ, Substantial damage. Single wheel. Struck a cactus. Gusts to 15 knots.

## Other investigations on N7705S (1)

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.

- [NTSB LAX75DUJ64](https://openairdocs.org/ntsb/LAX75DUJ64), Mar 8, 1975: Schweizer SGS233 (N7705S), Phoenix, AZ, 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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