# NTSB OAK67F0011: Schweiger SGS126, N3858A, Livermore, CA, June 11, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 11, 1966
- Place: Livermore, CA · LIVERMORE, CA
- Location: 37.6870° N, 121.7598° W: Placed by OpenAirDocs: center of Livermore, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.6870&lon=-121.7598&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 uninjured
- Status: Completed, report August 19, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 171472
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK67F0011
- Page: https://openairdocs.org/ntsb/OAK67F0011

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0178  66/6/11    LIVERMORE CALIF     PRATT-REID LNE-1    CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 36, 123
        TIME - 1500                    N53265              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 12 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  1                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HUMMINGBIRD HAVEN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - NOT INSTALLED
        REMARKS- PILOTS LOST SIGHT OF EACH OTHER>S GLIDER WHILE CLIMB IN SAME THERMAL N53265 BELOW OVERTOOK N3858A.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0178  66/6/11    LIVERMORE CALIF     SCHWEIGER SGS126    CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 44, 293
        TIME - 1500                    N3858A              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 90 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  1  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HUMMINGBIRD HAVEN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - NOT INSTALLED
        REMARKS- PILOTS LOST SIGHT OF EACH OTHERS GLIDER WHILE CLIMB IN SAME THERMAL.N53265 BELOW OVERTOOK N3858A.
```

## Aircraft 1

- Registration: [N3858A](https://openairdocs.org/aircraft/N3858A), registered now, S/N 24, built 1955 (OpenAirDocs)
- Reported make and model: SCHWEIGER SGS126
- Registry model: [Schweizer SGS 1-26A](https://openairdocs.org/model/schweizer-sgs-1-26a) (registry code 8050116) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Hummingbird Haven

## Aircraft 2

- Registration: N53265 (not matched to a registry record)
- Reported make and model: PRATT-REID LNE-1
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Hummingbird Haven

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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