# N637TT: 1998 Diamond Aircraft Industries HK 36 TTC, registration cancelled 2007-04-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 25, 2007
- Exported to: Australia
- Status when cancelled: Valid registration
- Airframe: [Diamond Aircraft Industries HK 36 TTC](https://openairdocs.org/model/diamond-aircraft-industries-hk-36-ttc) (registry code 05605ML)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Data sheets: [TCDS G07CE](https://openairdocs.org/tcds/G07CE) (OpenAirDocs)
- Serial number: 36.637
- Year built: 1998
- Type of aircraft: Glider
- Airworthiness: Standard, utility
- Airworthiness date: September 24, 1998
- Certificate issued: April 14, 2005
- Last registry action: April 14, 2005
- Mode S code: A85978
- Owner when cancelled: [Aircraft Guaranty Trust LLC Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20GUARANTY%20TRUST%20LLC%20TRUSTEE)
- Location: [Houston, TX](https://openairdocs.org/faa-place/TX/Houston)
- Owner type: Corporation
- Owner's area on the map: 29.9355° N, 95.3976° W: Placed by OpenAirDocs at the center of ZIP code 77060, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N637TT
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=637TT
- Page: https://openairdocs.org/deregistered/N637TT-2007-04-25

From the FAA registry file of November 3, 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 Diamond Aircraft Industries HK 36 TTC: https://openairdocs.org/model/diamond-aircraft-industries-hk-36-ttc.md

## NTSB investigations (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 LAX06LA185](https://openairdocs.org/ntsb/LAX06LA185), May 29, 2006: Diamond Aircraft Industries HK 36 TTC (N637TT), Payson, AZ, substantial damage. Probable cause: partial loss of engine power for undetermined reasons.

## 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 20060528018839A](https://openairdocs.org/incident/20060528018839A), May 28, 2006: Diamon HK36TTC (N637TT), Payson, AZ, Destroyed. (-23) Motor glider was operating under powerless flight outside Payson AZ airport area. At approximately 3 miles from end of the runway, at an altitude of 9000…

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