# NTSB DEN73AD056: Cessna 310, N7714H, Provo, UT, June 27, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 27, 1973
- Place: Provo, UT · PROVO, UT
- Location: 40.2338° N, 111.6585° W: Placed by OpenAirDocs: center of Provo, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.2338&lon=-111.6585&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 5 fatal, 1 serious
- Status: Completed, report August 23, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190100
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN73AD056
- Page: https://openairdocs.org/ntsb/DEN73AD056

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1929  73/6/27    PROVO,UT            CESSNA 310          CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 0600                    N7714H              PX-  4  1  0  PLEASURE/PERSONAL TRANSP  AGE 34, 1020 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            29 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - PROVO MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          PROVO,UT                   UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUN
           COLLIDED WITH: OBJECT                                    LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CYLINDER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER CLEARANCE-TOLERANCE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           PILOT IN COMMAND - ATTEMPTED OPERATION BEYOND EXPERIENCE/ABILITY LEVEL
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - FAILED TO ABORT TAKEOFF
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 2 ENGINES
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      70
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         FIRE AFTER IMPACT
        REMARKS- NO ENG RUNUP.ENGS BACKFIRED ON TKOF.HIT DIKE TO L OF RWY.BOTH ENGS POOR MECH COND.DENS ALT 6200 FT
```

## Aircraft

- Registration: [N7714H](https://openairdocs.org/deregistered/N7714H-1973-08-15), registration cancelled 1973-08-15, S/N 35005 (OpenAirDocs)
- Reported make and model: CESSNA 310
- Registry model: [Cessna 310](https://openairdocs.org/model/cessna-310) (registry code 2074202) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Provo Muni

## 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 19730627018149A](https://openairdocs.org/incident/19730627018149A), Jun 27, 1973: Cessna T310R, Provo, UT, Destroyed, 4 fatal. No eng runup. Engs backfired on tkof. Hit dike to l of rwy. Both engs poor mech cond. Dens alt 6200 ft

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.

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