# NTSB OAK74AP033: Cessna 172L, N3898Q, San Ramon, CA, January 17, 1974

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: January 17, 1974
- Place: San Ramon, CA · SAN RAMON, CA
- Location: 37.7666° N, 121.9292° W: Placed by OpenAirDocs: center of San Ramon, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7666&lon=-121.9292&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 1 minor, 1 uninjured
- Status: Completed, report March 18, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187159
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74AP033
- Page: https://openairdocs.org/ntsb/OAK74AP033

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0104  74/1/17    SAN RAMON,CALIF     CESSNA 172M         CR-  2  0  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1445                    N20331              PX-  0  0  0  DUAL                      AGE 26, 554 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  2                            72 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN RAMON,CALIF             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SUNGLARE
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - UNKNOWN/NOT REPORTED
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROL ZONE/AREA - NO
          EVASIVE ACTION TAKEN - YES                               ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
        REMARKS- AT IMPACT N3898Q IN SRT TO LEFT,N20331 IN STEEP TURN LEFT.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0104  74/1/17    SAN RAMON,CALIF     CESSNA 172L         CR-  0  0  2  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 1445                    N3898Q              PX-  0  0  0  DUAL                      28, 5167 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  2  0  0                            1073 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          OAKLAND,CALIF               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - UNKNOWN/NOT REPORTED
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROL ZONE/AREA - NO
          EVASIVE ACTION TAKEN - NO                                ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
        REMARKS- BOTH ACFT ON INST TRNG FLTS. N3898Q CRASH LND DUE ENG FAILURE DRG COLLISION.
```

## Aircraft 1

- Registration: [N3898Q](https://openairdocs.org/aircraft/N3898Q), registered now, S/N 17259998, built 1971 (OpenAirDocs)
- Reported make and model: CESSNA 172L
- Registry model: [Cessna 172L](https://openairdocs.org/model/cessna-172l) (registry code 2072432) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Aircraft 2

- Registration: [N20331](https://openairdocs.org/deregistered/N20331-1974-02-19), registration cancelled 1974-02-19, S/N 17261196 (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19740117001841A](https://openairdocs.org/incident/19740117001841A), Jan 17, 1974: Cessna 172L, San Ramon, CA, Substantial damage. Both acft on inst trng flts. N3898Q crash lnd due eng failure drg collision.
- [Accident 19740117001842A](https://openairdocs.org/incident/19740117001842A), Jan 17, 1974: Cessna 172M, San Ramon, CA, Destroyed. At impact N3898Q in srt to left,N20331 in steep turn left.

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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