# N40Z: Glaser-Dirks DG-400M/17

- Status: Valid registration
- Airframe: [Glaser-Dirks DG-400M/17](https://openairdocs.org/model/glaser-dirks-dg-400m-17) (registry code 3802550, 1 seats)
- Engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050)
- Serial number: 4-144
- Type: Glider
- Engine type: Reciprocating
- Airworthiness: Experimental, racing, exhibition
- Airworthiness date: November 21, 1985
- Certificate issued: February 27, 2021
- Expires: February 29, 2028
- Mode S code: A4AC87
- Registered owner: [Pinnell Benjamin D](https://openairdocs.org/faa-owner/PINNELL%20BENJAMIN%20D)
- Location: [Boulder, CO](https://openairdocs.org/faa-place/CO/Boulder)
- Owner type: Individual
- Owner's area on the map: 40.0457° N, 105.2009° W: Placed by OpenAirDocs at the center of ZIP code 80301, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=40Z
- Page: https://openairdocs.org/aircraft/N40Z

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Glaser-Dirks DG-400M/17)

None in force.

### Matched by engine (Bombardier ROTAX (ALL))

None in force.

## Information bulletins (advisory)

None matched.

## 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 DEN86LA127](https://openairdocs.org/ntsb/DEN86LA127), May 4, 1986: Glaser-Dirks DG-400 (N40Z), Longmont, CO, 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 19860504019689A](https://openairdocs.org/incident/19860504019689A), May 4, 1986: Amtr DG400 (N40Z), Longmont, CO, Substantial damage. Could not restart the engine of the glider. Struck a tree on landing. This type engine is routinely hard to start.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Glaser-Dirks DG-400M/17 aircraft: https://openairdocs.org/model/glaser-dirks-dg-400m-17/aircraft.md
- The Bombardier ROTAX (ALL) engine: https://openairdocs.org/engine/bombardier-rotax-all.md

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