# NTSB DEN75FTE07: Evans VP-1, N88DS, Boulder, CO, July 18, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 18, 1974
- Place: Boulder, CO · BOULDER, CO
- Location: 40.0244° N, 105.2513° W: Placed by OpenAirDocs: center of Boulder, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0244&lon=-105.2513&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 20, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 128685
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN75FTE07
- Page: https://openairdocs.org/ntsb/DEN75FTE07

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2050  74/7/18    BOULDER,COLO        EVANS VP-1          CR-  0  0  1  MISCELLANEOUS             PRIVATE, AGE 42, 403
        TIME - 1745                    N88DS               PX-  0  0  0  TEST                      TOTAL HOURS, 71 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BOULDER,COLO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
           MISCELLANEOUS - EVASIVE MANEUVER TO AVOID COLLISION
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
           WEATHER - HIGH DENSITY ALTITUDE
        WEATHER BRIEFING - UNKNOWN/NOT REPORTED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  12000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      80
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          260                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- VOLKSWAGON-REVSON 60HP ENG.DA 8900FT.UN CLIMB OVER WIRES,DOVE UNDER.
```

## Aircraft

- Registration: [N88DS](https://openairdocs.org/deregistered/N88DS-2012-09-18), registration cancelled 2012-09-18, S/N 1001, built 1973 (OpenAirDocs)
- Reported make and model: EVANS VP-1
- Registry model: [Hi-Country Taildraggers EVANS VP-1](https://openairdocs.org/model/hi-country-taildraggers-evans-vp-1) (registry code 0562730) (OpenAirDocs)
- Registry engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage

## 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 19740718022829A](https://openairdocs.org/incident/19740718022829A), Jul 18, 1974: Amtr 0562741, Boulder, CO, Substantial damage. Volkswagon-revson 60HP eng. Da 8900FT.un climb over wires,dove under.

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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