# NTSB CHI74AC042: Cessna 421, N550T, Plymouth, IN, November 14, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: November 14, 1973
- Place: Plymouth, IN · PLYMOUTH, IN
- Location: 41.3488° N, 86.3193° W: Placed by OpenAirDocs: center of Plymouth, IN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.3488&lon=-86.3193&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 5 fatal
- Status: Completed, report February 6, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187908
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74AC042
- Page: https://openairdocs.org/ntsb/CHI74AC042

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3706  73/11/14   PLYMOUTH,IND        CESSNA 421          CR-  1  0  0  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 0932                    N550T               PX-  4  0  0  PLEASURE/PERSONAL TRANSP  35, 4500 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - PLYMOUTH
        DEPARTURE POINT             INTENDED DESTINATION
          HAMILTON,OHIO               PLYMOUTH,IND
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IFR OPERATION
        FACTOR(S)
           WEATHER - FOG
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          PARTIAL OBSCURATION                                       25000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/4 MILE OR LESS                                         NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       46
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
         FIRE AFTER IMPACT
        REMARKS- DSCNDD BLO MDA.
```

## Aircraft

- Registration: [N550T](https://openairdocs.org/deregistered/N550T-1974-02-19), registration cancelled 1974-02-19, S/N 4210038 (OpenAirDocs)
- Reported make and model: CESSNA 421
- Registry model: [Cessna 421](https://openairdocs.org/model/cessna-421) (registry code 2076010) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Plymouth

## 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 19731114041109A](https://openairdocs.org/incident/19731114041109A), Nov 14, 1973: Cessna 421, Plymouth, IN, Destroyed, 4 fatal. Dscndd blo mda.

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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