# N173: Schempp-Hirth K. G NIMBUS II, registration cancelled 1996-05-16

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 16, 1996
- Status when cancelled: Triennial form not returned
- Airframe: [Schempp-Hirth K. G NIMBUS II](https://openairdocs.org/model/schempp-hirth-k-g-nimbus-ii) (registry code 3801925)
- Serial number: 27
- Type of aircraft: Glider
- Certificate issued: March 22, 1993
- Last registry action: March 20, 1996
- Mode S code: A12451
- Owners when cancelled: [Kile Raymond L](https://openairdocs.org/faa-owner/KILE%20RAYMOND%20L), [Crowl Chris L](https://openairdocs.org/faa-owner/CROWL%20CHRIS%20L)
- Location: [Littleton, CO](https://openairdocs.org/faa-place/CO/Littleton)
- Owner type: Co-owned
- Owner's area on the map: 39.5803° N, 104.9549° W: Placed by OpenAirDocs at the center of ZIP code 80122, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N173
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=173
- Page: https://openairdocs.org/deregistered/N173-1996-05-16

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 Schempp-Hirth K. G NIMBUS II: https://openairdocs.org/model/schempp-hirth-k-g-nimbus-ii.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 DEN93LA064](https://openairdocs.org/ntsb/DEN93LA064), May 30, 1993: Schempp-Hirth Nimbus II (N173), Buena Vista, CO, substantial damage. Probable cause: FAILURE TO FOLLOW PROCEDURES AND DIRECTIVES WHEN OPERATING THE FLAPS.

## 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 19930530016129A](https://openairdocs.org/incident/19930530016129A), May 30, 1993: Sphrth NIMBUS2 (N173), Buena Vista, CO, Substantial damage. Misused flaps on glider tow. Porpoised and oscillate. Broke tow rope. Wing hit ground. Glider cartwheeled.

## Other aircraft with N173

- [Registered now](https://openairdocs.org/aircraft/N173): Enstrom F-28A, S/N 218, built 1974

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