# NTSB OAK78DXQ44: Libelle 201B, N711DP, Chester, CA, September 5, 1978

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: September 5, 1978
- Place: Chester, CA · CHESTER, CA
- Location: 40.3017° N, 121.2325° W: Placed by OpenAirDocs: center of Chester, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.3017&lon=-121.2325&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report September 21, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 139954
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78DXQ44
- Page: https://openairdocs.org/ntsb/OAK78DXQ44

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2071   78/9/5    CHESTER,CA          LIBELLE 201B        CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 40, 375
        TIME - 1030                    N711DP              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, UNK/NR IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CHESTER
        DEPARTURE POINT             INTENDED DESTINATION
          CHESTER,CA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SINGLE WHEEL SAILPLANE
```

## Aircraft

- Registration: [N711DP](https://openairdocs.org/deregistered/N711DP-2025-06-21), registration cancelled 2025-06-21, S/N 517, built 1974 (OpenAirDocs)
- Reported make and model: LIBELLE 201B
- Registry model: [Glasflugel STD LIBELLE 201B](https://openairdocs.org/model/glasflugel-std-libelle-201b) (registry code 3800344) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Chester

## 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 19780905024799A](https://openairdocs.org/incident/19780905024799A), Sep 5, 1978: Amtr 0560310, Chester, CA, Substantial damage. Single wheel sailplane

## Other investigations on N711DP (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 LAX85LA394](https://openairdocs.org/ntsb/LAX85LA394), Sep 2, 1985: Glasflugel ST Liebelle 201B (N711DP), California City, 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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