# N99DD: 1978 Radford DYKE DELTA JD II, registration cancelled 2009-09-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 18, 2009
- Status when cancelled: Registration revoked
- Airframe: [Radford DYKE DELTA JD II](https://openairdocs.org/model/radford-dyke-delta-jd-ii) (registry code 0566502)
- Engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514)
- Serial number: DR-1
- Year built: 1978
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: August 30, 1979
- Certificate issued: March 19, 1975
- Last registry action: April 23, 1977
- Mode S code: ADD099
- Owner when cancelled: [Radford David L](https://openairdocs.org/faa-owner/RADFORD%20DAVID%20L)
- Location: [Morgan, UT](https://openairdocs.org/faa-place/UT/Morgan)
- Owner type: Individual
- Owner's area on the map: 41.0243° N, 111.6629° W: Placed by OpenAirDocs at the center of ZIP code 84050, within about 11 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N99DD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=99DD
- Page: https://openairdocs.org/deregistered/N99DD-2009-09-18

From the FAA registry file of November 5, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Radford DYKE DELTA JD II: https://openairdocs.org/model/radford-dyke-delta-jd-ii.md

## NTSB investigations (2)

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 DEN80FTE12](https://openairdocs.org/ntsb/DEN80FTE12), Dec 13, 1979: Delta Dyke (N99DD), Broomfield, CO, substantial damage, 2 fatal
- [NTSB DEN78FTC35](https://openairdocs.org/ntsb/DEN78FTC35), Aug 5, 1978: Dyke Delta JD11 (N99DD), Ft.Bridger, WY, substantial damage

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19791213033979A](https://openairdocs.org/incident/19791213033979A), Dec 13, 1979: Amtrdk DYKEDELTAJD2 (N99DD), Broomfield, CO, Substantial damage, 1 fatal. Aircraft made nose high liftoff and shallow, wobbly climb. Hit below ridgeline a mile from runway.

## Other aircraft with N99DD

- [Registered now](https://openairdocs.org/aircraft/N99DD): Cessna 180B, S/N 50419, built 1959

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