# NTSB OAK77DVD01: Ryan ST-3KR, N48701, Tracy, CA, October 2, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 2, 1976
- Place: Tracy, CA · TRACY, CA
- Location: 37.7274° N, 121.4522° W: Placed by OpenAirDocs: center of Tracy, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7274&lon=-121.4522&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 15, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 155743
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK77DVD01
- Page: https://openairdocs.org/ntsb/OAK77DVD01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3066   76/10/2   TRACY,CA            RYAN ST-3KR         CR-  0  0  1  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1240                    N48701              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  59, 11000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            102 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - TRACY
        DEPARTURE POINT             INTENDED DESTINATION
          HAYWARD,CA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - LUBRICATING SYSTEM: PUMPS-SCAVENGER
           MISCELLANEOUS ACTS,CONDITIONS - SHEARED
           MISCELLANEOUS ACTS,CONDITIONS - OIL EXHAUSTION-ENGINE LUBRICATION SYSTEM
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: [N48701](https://openairdocs.org/aircraft/N48701), registered now, S/N 2101, built 1942 (OpenAirDocs)
- Reported make and model: RYAN ST-3KR
- Registry model: [Ryan Aeronautical ST3KR](https://openairdocs.org/model/ryan-aeronautical-st3kr) (registry code 7830502) (OpenAirDocs)
- Registry engine: [Kinner R5 series](https://openairdocs.org/engine/kinner-r5-series) (registry code 37504, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Tracy

## Other investigations on N48701 (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 WPR15LA233](https://openairdocs.org/ntsb/WPR15LA233), Aug 6, 2015: Ryan Aeronautical ST3KR (N48701), Hollister, CA, substantial damage, 1 fatal. Probable cause: The pilot's failure to observe the runway environment while operating in the traffic pattern and his subsequent failure to maintain clearance from a lawnmower on the runway during the landing roll.…

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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