# NTSB MIA80IA089: Convair 440, N477KW, Clearwater, FL, August 7, 1980

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: August 7, 1980
- Place: Clearwater, FL · CLEARWATER, FL
- Location: 27.9794° N, 82.7713° W: Placed by OpenAirDocs: center of Clearwater, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=27.9794&lon=-82.7713&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 7 uninjured
- Status: Completed, report November 4, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 129371
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA80IA089
- Page: https://openairdocs.org/ntsb/MIA80IA089

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0027   80/8/7    CLEARWATER,FL       CONVAIR 440         CR-  0  0  7  MISCELLANEOUS             AIRLINE TRANSPORT, AGE
        TIME - 1340                    N477KW              PX-  0  0  0  OTHER                     45, 20000 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            6000 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - ST.PETE-CLEARWATR
        DEPARTURE POINT             INTENDED DESTINATION
          CLEARWATER,FL               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: BLOWER,IMPELLER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        REMARKS- 2 FAA INSPECTORS ON BOARD FOR FINAL PROVING FLT BFR USE OF ACFT IN SCHED COMMUTER PAX SERVICE.
```

## Aircraft

- Registration: N477KW (not matched to a registry record)
- Reported make and model: CONVAIR 440
- Category: Airplane
- Engines: reciprocating
- Damage: Minor damage
- Airport: St.Pete-Clearwatr

## FAA reports on this event (1)

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

- [Incident 19800807082379I](https://openairdocs.org/incident/19800807082379I), Aug 7, 1980: Cvac 440, Clearwater, FL. Engine backfired before reaching V1. Turned off runway and deplaned the passengers. Impeller failure.

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.