Glaser-Dirks DG-400
25 on the U.S. register across 2 versions the FAA records separately. Built from 1982 to 1990; half of them date from 1985 or earlier. Washington has the most (3). 16% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
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About the DG-400 from the FAA's model table
- Type
- Glider · Gliders
- Power
- Two-cycle piston, 1 engine
- Common engines
- Ama/Expr Unknown Eng (5), Bombardier Rotax (All) (4), None None (3)
- Fuel
- 100LL avgas
- Seats
- 1
- Built of
- composite · A glass-fibre glider.
- Maker on the register
- Glaser-Dirks
- Registered
- earliest certificate March 21, 1986; newest July 28, 2026
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 17 | 68% |
| Co-owned | 4 | 16% |
| Corporation | 2 | 8% |
| Partnership | 1 | 4% |
| LLC | 1 | 4% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| DG-400 | 22 | 1982 to 1990 | 88.0% |
| DG-400M/17 | 3 | 1986 | 12.0% |
When they were built by decade · 14 with no year on file
Airworthiness certificate class
By airworthiness certificate, as a table
| aircraft | share | |
|---|---|---|
| Experimental | 15 | 60% |
| None on file | 7 | 28% |
| Standard | 3 | 12% |
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| Twenty INC | 1 |
| Slack Jonathan D | 1 |
| Mississippi State University Soaring Club | 1 |
| Bcw Aviation LLC | 1 |
Fleet pages: Slack Jonathan D
Accident history NTSB records · 6 cases since 1982, 3 fatal
The 6 most recent of 6 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Glaser-Dirks DG-400 aircraft are registered in the U.S.?
25 as of November 9, 2026, counting 2 versions the FAA records separately.
Which state has the most Glaser-Dirks DG-400s?
Washington, with 3.
Who owns the Glaser-Dirks DG-400?
16% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Glaser-Dirks DG-400s on the register built?
Between 1982 and 1990; half of them in 1985 or earlier.
How many Glaser-Dirks DG-400 accidents has the NTSB recorded?
6 accidents and incidents since 1982, 3 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Glaser-Dirks DG-400 made of?
The airframe is composite: carbon fibre or glass fibre set in resin, moulded in large pieces with few joints, which gives smooth shapes but needs different inspection and repair methods from metal. A glass-fibre glider. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Glaser-Dirks DG-400 the component layer
The airframe is composite: carbon fibre or glass fibre set in resin, moulded in large pieces with few joints, which gives smooth shapes but needs different inspection and repair methods from metal. A glass-fibre glider. The design is held under 1 type certificate (G52EU, held by Dg Aviation GMBH). The FAA has issued 13 airworthiness directives (orders that owners must comply with) that name this model, most of them about propeller.
FAA orders 13 airworthiness directives · newest first
All orders naming the Glaser-Dirks DG-400
By system
Orders by system, as a table
| orders | share | |
|---|---|---|
| Propeller | 4 | 31% |
| Other and general | 2 | 15% |
| Flight controls | 2 | 15% |
| Engine | 2 | 15% |
| Airframe structure | 1 | 8% |
| Fuel system | 1 | 8% |
| Cabin, seats and restraints | 1 | 8% |
Certificates and bulletins
Safety bulletins 3 · advice, not orders
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the DG-400 links to the rest of the register
- Glaser-Dirks 37 aircraft on the register
- Glaser-Dirks DG-400 22 registered
- Glaser-Dirks DG-400M/17 3 registered
- Built of composite · A glass-fibre glider.
- Rotax all models (one FAA code) 4 of these aircraft
- Rotax 505 2 of these aircraft · 40 hp
- Washington 3 of these aircraft
- Nevada 3 of these aircraft
- New Mexico 2 of these aircraft
- Mississippi 2 of these aircraft
- Colorado 2 of these aircraft
- Twenty INC 1 of these aircraft
- Slack Jonathan D 1 of these aircraft
- Mississippi State University Soaring Club 1 of these aircraft
- Bcw Aviation LLC 1 of these aircraft
- NTSB accidents and incidents involving the DG-400 6 cases since 1982 · 3 fatal
- FAA orders naming the DG-400 13 airworthiness directives
The whole map of how records connect · these connections as data: /graph/model/glaser-dirks/dg-400.json.
Aircraft newest certificates first · 25
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N70BS | Glaser-Dirks DG-400 |
Individual owner Ohio |
Experimental | 2026-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N83DG | Glaser-Dirks DG-400 |
Individual owner Colorado |
Experimental | 2026-04-27 | ValidFAA registration status code V: Valid registration. All codes |
| N406PP | Glaser-Dirks DG-400 |
Co-owned owner Texas |
None on file | 2026-03-10 | ValidFAA registration status code V: Valid registration. All codes |
| N400YE | Glaser-Dirks DG-400 |
Individual owner Florida |
Experimental | 2025-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N59RC | Glaser-Dirks DG-400 |
Individual owner Nevada |
None on file | 2024-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N579JC | Glaser-Dirks DG-400 |
Individual owner New Hampshire |
None on file | 2024-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N37Z | Glaser-Dirks DG-400 |
Individual owner New Mexico |
None on file | 2023-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N57Y | Glaser-Dirks DG-400 |
Co-owned owner Washington |
Experimental | 2023-08-16 | ValidFAA registration status code V: Valid registration. All codes |
| N305W | Glaser-Dirks DG-400 |
Individual owner Washington |
Experimental | 2023-06-07 | ValidFAA registration status code V: Valid registration. All codes |
| N991P | Glaser-Dirks DG-400 |
Individual owner Washington |
Experimental | 2023-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N9966C | Glaser-Dirks DG-400M/17 |
Bcw Aviation LLC Sigourney, Iowa |
Standard | 2022-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N45DG | Glaser-Dirks DG-400 |
Co-owned owner Nevada |
Experimental | 2022-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N113SA | Glaser-Dirks DG-400 |
Individual owner Arizona |
Experimental | 2021-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N400BB | Glaser-Dirks DG-400 |
Individual owner New Mexico |
Standard | 2021-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N40Z | Glaser-Dirks DG-400M/17 |
Individual owner Colorado |
Experimental | 2021-02-27 | ValidFAA registration status code V: Valid registration. All codes |
| N393SB | Glaser-Dirks DG-400 |
Twenty INC Wilmington, Delaware |
Experimental | 2019-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N1LG | Glaser-Dirks DG-400 |
Individual owner Mississippi |
Experimental | 2015-01-20 | ValidFAA registration status code V: Valid registration. All codes |
| N318DV | Glaser-Dirks DG-400 |
Individual owner New York |
None on file | 2014-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N400MM | Glaser-Dirks DG-400 |
Mississippi State University Soaring Club Mississippi State, Mississippi |
Experimental | 2014-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N12KL | Glaser-Dirks DG-400 |
Individual owner Tennessee |
Experimental | 2012-10-04 | ValidFAA registration status code V: Valid registration. All codes |
| N14YC | Glaser-Dirks DG-400 |
Slack Jonathan D Bonfield, Illinois |
Experimental | 2008-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N488DR | Glaser-Dirks DG-400M/17 |
Individual owner Nevada |
None on file | 2007-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N8209B | Glaser-Dirks DG-400 |
Individual owner Alaska |
Standard | 2005-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N499E | Glaser-Dirks DG-400 |
Individual owner Kansas |
None on file | 1996-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N400GD | Glaser-Dirks DG-400 |
Co-owned owner Maryland |
Experimental | 1986-03-21 | ValidFAA registration status code V: Valid registration. All codes |