MKC69F0237

NTSB accident investigation · Bensen B8-M · Anoka, MN · October 21, 1968

Accident · No injuriesClosed
Date
October 21, 1968
Place
Anoka, MN · ANOKA, MN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N1802Bensen B8-M
Status
Completed · report December 27, 1968
Report
Brief approved by the director
Case key
108003

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

NTSB brief

NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.

----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3755  68/10/21   ANOKA,MINN          BENSEN B8-M         CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 48, 21 TOTAL
        TIME - 1010                    N1802               PX-  0  0  0  TRAINING                  HOURS, 3 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - ANOKA COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: TRAFFIC PATTERN-CIRCLING
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: PISTON,PISTON RINGS
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE TEMPERATURE
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (OWNER PERSONNEL)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- NO 4 CYL PISTON SEIZED DUE TO PRE-IGNITION CAUSED BY SPARK PLUGS WITH IMPROPER HEAT RANGE FOR ENG.

Aircraft

Registration
N1802
Reported as
Bensen B8-M
Category
Gyroplane, amateur-built
Engine
reciprocating
Damage
Substantial damage
Airport
Anoka County

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Other investigations on N1802 · 1

Matched to the same aircraft by N-number and date.