# NTSB MKC68A0006: Convair 340, N3427, Des Moines, IA, July 23, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 23, 1967
- Place: Des Moines, IA · DES MOINES, IA
- Location: 41.6005° N, 93.6091° W: Placed by OpenAirDocs: center of Des Moines, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.6005&lon=-93.6091&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 9 uninjured
- Status: Completed, report March 19, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 115791
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC68A0006
- Page: https://openairdocs.org/ntsb/MKC68A0006

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0048  67/7/23    DES MOINES,IOWA     CONVAIR 340         CR-  0  0  3  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1446                    N3427               PX-  0  0  6                            36, 9300 TOTAL HOURS, 400
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        OPERATOR - BRANIFF AIRWAYS,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           FIRE OR EXPLOSION: IN FLIGHT                             IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CYLINDER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
           POWERPLANT - LUBRICATING SYSTEM: LINES,HOSES,FITTING
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- CYL BASE STUD FAILURE IN NO 8 CYL,L.ENG.FIRE DUE TO SEVERED OIL LINE.EMERG-FUEL-OFF NOT COMPLETED.
```

## Aircraft

- Registration: [N3427](https://openairdocs.org/deregistered/N3427-2017-05-15), registration cancelled 2017-05-15, S/N 90, built 1953 (OpenAirDocs)
- Reported make and model: CONVAIR 340
- Registry model: [Convair 340-32](https://openairdocs.org/model/convair-340-32) (registry code 2422706) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-2800 series](https://openairdocs.org/engine/pratt-whitney-r-2800-series) (registry code 52026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: 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.