# NTSB CHI73AC071: Cessna 421B, N1536T, Brookfield, WI, February 19, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: February 19, 1973
- Place: Brookfield, WI · BROOKFIELD, WI
- Location: 43.0643° N, 88.1178° W: Placed by OpenAirDocs: center of Brookfield, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0643&lon=-88.1178&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 4 fatal
- Status: Completed, report April 17, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 169953
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI73AC071
- Page: https://openairdocs.org/ntsb/CHI73AC071

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0342  73/2/19    BROOKFIELD,WIS      CESSNA 421B         CR-  1  0  0  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 0751                    N1536T              PX-  3  0  0  CORP/EXEC                 53, 8389 TOTAL HOURS, 27
                                       DAMAGE-DESTROYED    OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - TIMMERMAN
        DEPARTURE POINT             INTENDED DESTINATION
          BROOKFIELD,WIS              CENTERVILLE,OHIO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           STALL: SPIN                                              LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: FUEL INJECTION SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - OBSTRUCTED
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
           PILOT IN COMMAND - DIVERTED ATTENTION FROM OPERATION OF AIRCRAFT
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           WEATHER - LOW CEILING
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  1100
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          4 MILES OR LESS                                          RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       34
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          250                                                       15
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
         FIRE AFTER IMPACT
        REMARKS- NR1 CYL NOZZLE CORE,L ENG,PARTIALLY BLOCKED,DCRNG FUEL FLOW 18LBS/HR.OBSVRD SPINNING FRM OVC.
```

## Aircraft

- Registration: [N1536T](https://openairdocs.org/deregistered/N1536T-1973-04-16), registration cancelled 1973-04-16, S/N 421B 0306 (OpenAirDocs)
- Reported make and model: CESSNA 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Timmerman

## 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 19730219005489A](https://openairdocs.org/incident/19730219005489A), Feb 19, 1973: Cessna 421, Brookfield, WI, Destroyed, 3 fatal. NR1 cyl nozzle core,l eng,partially blocked,dcrng fuel flow 18LBS/HR.obsvrd spinning frm ovc.

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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