# NTSB LAX71AL034: Grumman G-21A, N12CS, Lakewood, CA, December 3, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: December 3, 1970
- Place: Lakewood, CA · LAKEWOOD, CA
- Location: 33.8471° N, 118.1219° W: Placed by OpenAirDocs: center of Lakewood, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.8471&lon=-118.1219&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor, 4 uninjured
- Status: Completed, report April 13, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159314
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX71AL034
- Page: https://openairdocs.org/ntsb/LAX71AL034

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2699   70/12/3   LAKEWOOD,CALIF      MOONEY M20C         CR-  0  1  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1600                    N9232V              PX-  0  0  0  DUAL                      AGE 41, 2476 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  4                            502 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LONG BEACH
        DEPARTURE POINT             INTENDED DESTINATION
          VAN NUYS,CALIF              LAKEWOOD,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH ON GROUND                  TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        FACTOR(S)
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
        REMARKS- PLT OF N9232V STATED HE SAW N12CS TAXYING PRIOR TO COLLISION.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2699   70/12/3   LAKEWOOD,CALIF      GRUMMAN G-21A       CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1600                    N12CS               PX-  0  0  3  COMMUTER AIR CARRIER      55, 17650 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  1  1  AIR TAXI-PASSG S-D        1500 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LONG BEACH
        DEPARTURE POINT             INTENDED DESTINATION
          LAKEWOOD,CALIF              AVALON,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH ON GROUND                  TAXI: TO TAKEOFF
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISUNDERSTANDING OF ORDERS OR INSTRUCTIONS
        FACTOR(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        REMARKS- GRND CTL TOLD N12CS PLT TO DELAY FOR CESSNA AND N9232V.PLT MISUNDERSTOOD,DELAYED ONLY FOR CESSNA.
```

## Aircraft 1

- Registration: [N12CS](https://openairdocs.org/deregistered/N12CS-2011-01-21), registration cancelled 2011-01-21, S/N 1085, built 1962 (OpenAirDocs)
- Reported make and model: GRUMMAN G-21A
- Registry model: [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a) (registry code 3951204) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Long Beach

## Aircraft 2

- Registration: [N9232V](https://openairdocs.org/aircraft/N9232V), registered now, S/N 690056, built 1969 (OpenAirDocs)
- Reported make and model: MOONEY M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Long Beach

## Other investigations on N12CS (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 LAX70AL046](https://openairdocs.org/ntsb/LAX70AL046), Jan 30, 1970: Grumman G-21A (N12CS), Avalon, 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.

---
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.