# N9660: Bell 47D1, registration cancelled 2013-05-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 23, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802)
- Engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033)
- Data sheets: [TCDS H-1](https://openairdocs.org/tcds/H-1), [TCDS E-244](https://openairdocs.org/tcds/E-244) (OpenAirDocs)
- Serial number: 486
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: October 2, 1970
- Certificate issued: April 14, 1994
- Last registry action: April 21, 2009
- Mode S code: AD74C8
- Owners when cancelled: [New Tropical Adventures Inc DBA](https://openairdocs.org/faa-owner/NEW%20TROPICAL%20ADVENTURES%20INC%20DBA), [Adventure Island](https://openairdocs.org/faa-owner/ADVENTURE%20ISLAND)
- Location: [Marathan, FL](https://openairdocs.org/faa-place/FL/Marathan)
- Owner type: Corporation
- Owner's area on the map: 24.7499° N, 80.9866° W: Placed by OpenAirDocs at the center of ZIP code 33050, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9660
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9660
- Page: https://openairdocs.org/deregistered/N9660-2013-05-23

From the FAA registry file of October 29, 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 Bell 47D1: https://openairdocs.org/model/bell-47d1.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 MIA94FA125](https://openairdocs.org/ntsb/MIA94FA125), Apr 22, 1994: Bell 47D1 (N9660), Marathon, FL, destroyed, 2 fatal. Probable cause: SEPARATION OF THE TAIL ROTOR GEARBOX AND TAIL ROTOR BLADES FOR AN UNDETERMINED REASON. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF MAINTENANCE PERSONNEL TO FOLLOW THE PROPER MAINTENANCE…
- [NTSB MIA74DKT61](https://openairdocs.org/ntsb/MIA74DKT61), Mar 16, 1974: Bell 47D1 (N9660), Ochopee, FL, substantial damage

## FAA accident and incident reports (2)

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 19940422012699A](https://openairdocs.org/incident/19940422012699A), Apr 22, 1994: Bell 47D1 (N9660), Marathon, FL, Destroyed, 4 fatal. Loud bang. Parts came off tail. Yawed right. Impact on island. Bounced into water. Overtime tail rotor blades failed
- [Accident 19740316013369A](https://openairdocs.org/incident/19740316013369A), Mar 16, 1974: Bell 47D1 (N9660), Ochopee, FL, Substantial damage. R skid dug into gnd drg l/o.

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