# NTSB LAX73DUM04: Cessna 170A, N9521A, Calexico, CA, September 4, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 4, 1972
- Place: Calexico, CA · CALEXICO, CA
- Location: 32.6849° N, 115.4947° W: Placed by OpenAirDocs: center of Calexico, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.6849&lon=-115.4947&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 22, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 168342
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX73DUM04
- Page: https://openairdocs.org/ntsb/LAX73DUM04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3366   72/9/4    CALEXICO,CALIF      CESSNA 170A         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 47, 145
        TIME - 1240                    N9521A              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 20 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CALEXICO INTL
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          MEXICALI,MEXICO             HEMET,CALIF                  CALEXICO,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           AIRFRAME FAILURE: ON GROUND                              LANDING: ROLL
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - INTENTIONAL GROUND-WATER-LOOP-SWERVE
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - HYDRAULIC FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           AIRFRAME - LANDING GEAR: MAIN GEAR-SHOCK ABSORBING ASSY,STRUTS,ATTACHMENTS,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
```

## Aircraft

- Registration: [N9521A](https://openairdocs.org/aircraft/N9521A), registered now, S/N 19082, built 1949 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Calexico Intl

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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