# NTSB MKC77FCD23: Morris Cass 111M, N90RM, Winterset, IA, June 17, 1977

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 17, 1977
- Place: Winterset, IA · WINTERSET, IA
- Location: 41.3444° N, 94.0130° W: Placed by OpenAirDocs: center of Winterset, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.3444&lon=-94.0130&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report August 31, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 147074
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC77FCD23
- Page: https://openairdocs.org/ntsb/MKC77FCD23

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1732  77/6/17    WINTERSET,IA        MORRIS CASS 111M    CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, AGE 41, 608
        TIME - 1850                    N90RM               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 52 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WINTERSET,IA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: ACROBATICS
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: VERTICAL STABILIZER,ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           AIRFRAME - FLIGHT CONTROL SURFACES: ELEVATOR ASSEMBLY,ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - JAMMED
        REMARKS- VERT FIN SPAR FRACTURE SURFACE 50% DISCOLORED.VERT STAB DISPLACED LEFT OBSTRUCTING ELEV TRAVEL.
```

## Aircraft

- Registration: [N90RM](https://openairdocs.org/deregistered/N90RM-1977-08-30), registration cancelled 1977-08-30, S/N MS-2 (OpenAirDocs)
- Reported make and model: MORRIS CASS 111M
- Registry model: [Morris CASSUTT III](https://openairdocs.org/model/morris-cassutt-iii) (registry code 19704X6) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed

## 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 19770617017579A](https://openairdocs.org/incident/19770617017579A), Jun 17, 1977: Amtr 19704X6, Winterset, IA, Destroyed. Vert fin spar fracture surface 50 discolored. Vert stab displaced left obstructing elev travel.

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.