# NTSB DEN80FTE12: Delta Dyke, N99DD, Broomfield, CO, December 13, 1979

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: December 13, 1979
- Place: Broomfield, CO · BROOMFIELD, CO
- Location: 39.9205° N, 105.0867° W: Placed by OpenAirDocs: center of Broomfield, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9205&lon=-105.0867&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report February 15, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 132935
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN80FTE12
- Page: https://openairdocs.org/ntsb/DEN80FTE12

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3014  79/12/13 NR.BROOMFIELD,CO      DELTA DYKE          CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 49, 645
        TIME - 0747                    N99DD               PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 111 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - JEFFERSON COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
         BROOMFIELD,CO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
```

## Aircraft

- Registration: [N99DD](https://openairdocs.org/deregistered/N99DD-2009-09-18), registration cancelled 2009-09-18, S/N DR-1, built 1978 (OpenAirDocs)
- Reported make and model: DELTA DYKE
- Registry model: [Radford DYKE DELTA JD II](https://openairdocs.org/model/radford-dyke-delta-jd-ii) (registry code 0566502) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Jefferson County

## 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 19791213033979A](https://openairdocs.org/incident/19791213033979A), Dec 13, 1979: Amtrdk DYKEDELTAJD2, Broomfield, CO, Substantial damage, 1 fatal. Aircraft made nose high liftoff and shallow, wobbly climb. Hit below ridgeline a mile from runway.

## Other investigations on N99DD (1)

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.

- [NTSB DEN78FTC35](https://openairdocs.org/ntsb/DEN78FTC35), Aug 5, 1978: Dyke Delta JD11 (N99DD), Ft.Bridger, WY, substantial damage

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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