DEN77FTE76

NTSB accident investigation · Stinson 108-2 · Boulder, CO · August 20, 1977

Accident · No injuriesClosed
Date
August 20, 1977
Place
Boulder, CO · BOULDER, CO
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9389KStinson 108-2
Status
Completed · report November 16, 1977
Report
Brief approved by the director
FAA report
19770820029449A
Case key
146015

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
----------------------------------------------------------------------------------------------------------------------------
3-3231  77/8/20    BOULDER, CO         STINSON 108-2       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 34, 132
        TIME - 1130                    N9389K              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 96 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - BOULDER MUNI.
        DEPARTURE POINT             INTENDED DESTINATION
          BOULDER, CO                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           STALL: SPIN                                              LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         FIRE AFTER IMPACT
        REMARKS- NO. 6 CYLINDER PLUGS FOULED AND EXHAUST VALVE LEAKING

Aircraft

Registration
N9389K
Reported as
Stinson 108-2
Category
Airplane
Engine
reciprocating
Damage
Substantial damage
Airport
Boulder Muni.

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.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.