# NTSB LAX72AL020: Piper PA-22, N4928Z, W.Los Angls, CA, September 9, 1971

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 9, 1971
- Place: W.Los Angls, CA · W.LOS ANGLS, CA
- Location: 34.0464° N, 118.4481° W: Placed by OpenAirDocs: center of West Los Angeles, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.0464&lon=-118.4481&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report April 4, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163398
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX72AL020
- Page: https://openairdocs.org/ntsb/LAX72AL020

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3113   71/9/9    W.LOS ANGLS,CALIF   CESSNA 150          CR-  2  0  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0807                    N60003              PX-  0  0  0  DUAL                      AGE 29, 961 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  1  0  0                            854 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SANTA MONICA
        DEPARTURE POINT             INTENDED DESTINATION
          SANTA MONICA,CALIF          W.LOS ANGLS,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: TRAFFIC PATTERN-CIRCLING
        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 - TOWER                               RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - CONTROLLED AIRPORT
          CONTROL ZONE/AREA - YES                                  CONVERGENCE ANGLE-DEGREES -  30
          HORIZONTAL COLLISION ANGLE-DEGREES -   30                ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
         FIRE AFTER IMPACT
        REMARKS- C-150 ON DOWNWIND LEG.WAS IN TWR CTC.PA-22 DEST UNK,DIDNT HAVE CTC.C-150 CRASHED INTO HOUSE.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3113   71/9/9    W.LOS ANGLS,CALIF   PIPER PA-22         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 51, 440
        TIME - 0807                    N4928Z              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 123 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  2  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SANTA MONICA
        DEPARTURE POINT             INTENDED DESTINATION
          COMPTON,CALIF              UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: NORMAL CRUISE
        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 - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - CONTROLLED AIRPORT
          CONTROL ZONE/AREA - YES                                  CONVERGENCE ANGLE-DEGREES -  180
          HORIZONTAL COLLISION ANGLE-DEGREES -   30                ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
         FIRE AFTER IMPACT
        REMARKS- PA-22 CRASHED IN ALLEY.
```

## Aircraft 1

- Registration: [N4928Z](https://openairdocs.org/deregistered/N4928Z-1971-12-16), registration cancelled 1971-12-16, S/N 22-8518 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-108](https://openairdocs.org/model/piper-pa-22-108) (registry code 7102204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Santa Monica

## Aircraft 2

- Registration: [N60003](https://openairdocs.org/deregistered/N60003-1971-12-16), registration cancelled 1971-12-16, S/N 15069999 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150J](https://openairdocs.org/model/cessna-150j) (registry code 2071820) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Santa Monica

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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