# NTSB OAK76DVG20: Maule M4220C, N40635, Ruth, CA, September 3, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 3, 1975
- Place: Ruth, CA · RUTH, CA
- Location: 40.2696° N, 123.3214° W: Placed by OpenAirDocs: center of Ruth, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.2696&lon=-123.3214&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 24, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 150817
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76DVG20
- Page: https://openairdocs.org/ntsb/OAK76DVG20

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2766   75/9/3    RUTH,CA             MAULE M4220C        CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 60, 1608
        TIME - 1400                    N40635              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 209 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - RUTH
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          RIALTO,CA                   RUTH,CA                      WILLOWS,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: DIRT BANK                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
        WEATHER BRIEFING - UNKNOWN/NOT REPORTED
        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                                                      92
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
```

## Aircraft

- Registration: [N40635](https://openairdocs.org/aircraft/N40635), registered now, S/N 2153C, built 1972 (OpenAirDocs)
- Reported make and model: MAULE M4220C
- Registry model: [Maule M-4-220C](https://openairdocs.org/model/maule-m-4-220c) (registry code 5460114) (OpenAirDocs)
- Registry engine: [Franklin 6A-350SER](https://openairdocs.org/engine/franklin-6a-350ser) (registry code 27023, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Ruth

## 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 19750903030389A](https://openairdocs.org/incident/19750903030389A), Sep 3, 1975: Maule M4220C, Ruth, CA, Substantial damage

## Other investigations on N40635 (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 WPR23LA131](https://openairdocs.org/ntsb/WPR23LA131), Mar 18, 2023: Maule M-4-220C (N40635), Santa Ynez, CA, substantial damage. Probable cause: The pilot’s inadequate fuel planning, which resulted in a loss of engine power due to fuel starvation.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.