# NTSB MKC74AK056: Cessna 421, N3139K, Bunker, MO, March 29, 1974 - Type: NTSB accident investigation - Classification: Accident · Fatal · Closed - Date: March 29, 1974 - Place: Bunker, MO · BUNKER, MO - Location: 37.4576° N, 91.2116° W: Placed by OpenAirDocs: center of Bunker, MO, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=37.4576&lon=-91.2116&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 5 fatal - Status: Completed, report July 3, 1974 - Report: Brief approved by the director - NTSB case key (mKey): 124207 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC74AK056 - Page: https://openairdocs.org/ntsb/MKC74AK056 ## NTSB brief ``` ----------------------------------------------------------------------------------------------------------------------------  FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA                                                                F  S M/N     PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-1406  74/3/29  NR.BUNKER,MO          CESSNA 421          CR-  2  0  0  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,         TIME - 1322                    N3139K              PX-  3  0  0  CORP/EXEC                 AGE 38, 2000 TOTAL HOURS,                                        DAMAGE-DESTROYED    OT-  0  0  0                            100 IN TYPE, INSTRUMENT                                                                                                    RATED.         DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP           HAGERSTOWN,MD               LAS VEGAS,NEV                PUEBLO,COLO         TYPE OF ACCIDENT                                         PHASE OF OPERATION            STALL: SPIN                                              IN FLIGHT: OTHER            AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: UNCONTROLLED DESCENT         PROBABLE CAUSE(S)            PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING            MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE            MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE            PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED            PILOT IN COMMAND - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT            AIRFRAME - FLIGHT CONTROL SURFACES: HORIZONTAL STABILIZER, ATTACHMENTS         FACTOR(S)            MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT            WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.            WEATHER - THUNDERSTORM ACTIVITY            WEATHER - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS         WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE         WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT         SKY CONDITION                                            CEILING AT ACCIDENT SITE           OVERCAST                                                  2800         VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE           1 MILE OR LESS                                            THUNDERSTORM, RAIN         OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F           UNKNOWN/NOT REPORTED                                      72         WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS           290                                                       28         TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN           VFR                                                      IFR          FIRE AFTER IMPACT         REMARKS- NO WX UPDATE AT ST LOUIS.LINE OF TSTMS WEST.HEAVY ICING,LOST CTL.HOR STAB & ELEV SEPRTD. ``` ## Aircraft - Registration: [N3139K](https://openairdocs.org/deregistered/N3139K-1974-07-24), registration cancelled 1974-07-24, S/N 421-0116 (OpenAirDocs) - Reported make and model: CESSNA 421 - Registry model: [Cessna 421](https://openairdocs.org/model/cessna-421) (registry code 2076010) (OpenAirDocs) - Category: Airplane - 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 19740329015859A](https://openairdocs.org/incident/19740329015859A), Mar 29, 1974: Cessna 421, Bunker, MO, Destroyed, 3 fatal. No wx update at st louis. Line of tstms west. Heavy icing,lost ctl. Hor stab & elev seprtd. 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.