# NTSB LAX75FUJ40: Cessna 170B, N4509C, Casa Grande, AZ, October 16, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 16, 1974
- Place: Casa Grande, AZ · CASA GRANDE, AZ
- Location: 32.8795° N, 111.7574° W: Placed by OpenAirDocs: center of Casa Grande, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.8795&lon=-111.7574&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report December 10, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 141009
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX75FUJ40
- Page: https://openairdocs.org/ntsb/LAX75FUJ40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3349  74/10/16   CASA GRANDE,ARIZ    CESSNA 170B         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 32, 1700
        TIME - 1730                    N4509C              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 280 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - CASA GRANDE MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          PEORIA,ARIZ                 CASA GRANDE,ARIZ
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           TURBULENCE                                               LANDING: FINAL APPROACH
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           MISCELLANEOUS - VORTEX TURBULENCE
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        REMARKS- ENCOUNTERED HELICOPTER WAKE TURBC.
```

## Aircraft

- Registration: [N4509C](https://openairdocs.org/aircraft/N4509C), registered now, S/N 25453, built 1952 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Casa Grande Muni

## FAA reports on this event (1)

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

- [Accident 19741016035969A](https://openairdocs.org/incident/19741016035969A), Oct 16, 1974: Cessna 170B, Casa Grande, AZ, Substantial damage. Encountered helicopter wake turbc.

## Other investigations on N4509C (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 OAK67D0247](https://openairdocs.org/ntsb/OAK67D0247), Mar 5, 1967: Cessna 170B (N4509C), Modesto, 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.