# Schempp-Hirth Flugzeugbau DUO DISCUS

- Type: Aircraft model (FAA registry)
- Registry codes: 3801901, 3801942
- Manufacturer (registry): SCHEMPP-HIRTH FLUGZEUGBAU · SCHEMPP-HIRTH FLUGZEUGBAU GMBH
- Model: DUO DISCUS
- Aircraft type: Glider
- Category: Glider
- Engines: None
- Seats: 1
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS G85EU](https://openairdocs.org/tcds/G85EU) (OpenAirDocs)
- Holder: Schempp-Hirth Flugzeugbau GmbH
- Registered aircraft: 29
- Page: https://openairdocs.org/model/schempp-hirth-flugzeugbau-duo-discus

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2025-04-14](https://openairdocs.org/ad/2025-04-14): Passenger/Crew Doors · Schempp-Hirth Flugzeugbau Duo-Discus and Duo Discus T. Effective Apr 8, 2025
- [AD 2023-03-14](https://openairdocs.org/ad/2023-03-14): Drag Control System · Schempp-Hirth Flugzeugbau Duo-Discus and Duo Discus T. Effective Apr 5, 2023
- [AD 2023-03-10](https://openairdocs.org/ad/2023-03-10): Elevator Control System · Schempp-Hirth Flugzeugbau Duo-Discus and Duo Discus T. Effective Feb 24, 2023
- [AD 2021-26-25](https://openairdocs.org/ad/2021-26-25): Drag Control System · Schempp-Hirth Flugzeugbau Duo-Discus and Duo Discus T. Effective Feb 24, 2022
- [AD 2015-20-11](https://openairdocs.org/ad/2015-20-11): Flight controls · Schempp-Hirth Flugzeugbau Duo-Discus and Duo Discus T. Effective Nov 18, 2015
- [AD 2004-24-11](https://openairdocs.org/ad/2004-24-11): Spar cap and spar web · Schempp-Hirth Flugzeugbau Duo-Discus. Effective Dec 30, 2004
- [AD 2003-16-51](https://openairdocs.org/ad/2003-16-51): Spar cap · Schempp-Hirth Flugzeugbau Duo-Discus. Effective Aug 20, 2003

## Information bulletins (advisory) (1)

- [SAIB CE-08-07](https://openairdocs.org/saib/CE-08-07): Doors. Issued Nov 26, 2007

## Registered aircraft (29)

- [N106BR](https://openairdocs.org/aircraft/N106BR): [Marshall Michael A](https://openairdocs.org/faa-owner/MARSHALL%20MICHAEL%20A), [Hanover, MD](https://openairdocs.org/faa-place/MD/Hanover), built 2003, S/N 381
- [N117GV](https://openairdocs.org/aircraft/N117GV): [Texas Soaring Association Inc](https://openairdocs.org/faa-owner/TEXAS%20SOARING%20ASSOCIATION%20INC), [Midlothian, TX](https://openairdocs.org/faa-place/TX/Midlothian), built 1998, S/N 181
- [N125DD](https://openairdocs.org/aircraft/N125DD): [Arnold William](https://openairdocs.org/faa-owner/ARNOLD%20WILLIAM), [Pipersville, PA](https://openairdocs.org/faa-place/PA/Pipersville), built 1996, S/N 103
- [N142TB](https://openairdocs.org/aircraft/N142TB): [Big Sky Jet Inc](https://openairdocs.org/faa-owner/BIG%20SKY%20JET%20INC), [Bozeman, MT](https://openairdocs.org/faa-place/MT/Bozeman), S/N 386
- [N161AF](https://openairdocs.org/aircraft/N161AF): [Usaf Academy](https://openairdocs.org/faa-owner/USAF%20ACADEMY), [Usaf Academy, CO](https://openairdocs.org/faa-place/CO/Usaf%20Academy), built 2003, S/N 384
- [N162AF](https://openairdocs.org/aircraft/N162AF): [Usaf Academy](https://openairdocs.org/faa-owner/USAF%20ACADEMY), [Usaf Academy, CO](https://openairdocs.org/faa-place/CO/Usaf%20Academy), built 2003, S/N 385
- [N175DD](https://openairdocs.org/aircraft/N175DD): [Minden Soaring Club Inc](https://openairdocs.org/faa-owner/MINDEN%20SOARING%20CLUB%20INC), [Genoa, NV](https://openairdocs.org/faa-place/NV/Genoa), built 1998, S/N 175
- [N1811W](https://openairdocs.org/aircraft/N1811W): [Morgan Robert](https://openairdocs.org/faa-owner/MORGAN%20ROBERT), [Tehachapi, CA](https://openairdocs.org/faa-place/CA/Tehachapi), built 2000, S/N 262
- [N215SH](https://openairdocs.org/aircraft/N215SH): [Hall Morgan R](https://openairdocs.org/faa-owner/HALL%20MORGAN%20R), [Los Osos, CA](https://openairdocs.org/faa-place/CA/Los%20Osos), built 1999, S/N 215
- [N241MZ](https://openairdocs.org/aircraft/N241MZ): [Stewart Scot T](https://openairdocs.org/faa-owner/STEWART%20SCOT%20T), [Saratoga Springs, NY](https://openairdocs.org/faa-place/NY/Saratoga%20Springs), built 1999, S/N 240
- [N268MP](https://openairdocs.org/aircraft/N268MP): [Marcus Hook Glider Works](https://openairdocs.org/faa-owner/MARCUS%20HOOK%20GLIDER%20WORKS), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2007, S/N 526
- [N369DD](https://openairdocs.org/aircraft/N369DD): [Nephelenv LLC](https://openairdocs.org/faa-owner/NEPHELENV%20LLC), [Minden, NV](https://openairdocs.org/faa-place/NV/Minden), S/N 223
- [N461BH](https://openairdocs.org/aircraft/N461BH): [Dingess James David](https://openairdocs.org/faa-owner/DINGESS%20JAMES%20DAVID), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), S/N 556
- [N483KS](https://openairdocs.org/aircraft/N483KS): [Barber Piet Edward](https://openairdocs.org/faa-owner/BARBER%20PIET%20EDWARD), [South Riding, VA](https://openairdocs.org/faa-place/VA/South%20Riding), built 2002, S/N 358
- [N484KS](https://openairdocs.org/aircraft/N484KS): [Striedieck Karl](https://openairdocs.org/faa-owner/STRIEDIECK%20KARL), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), built 2015, S/N 679
- [N517DX](https://openairdocs.org/aircraft/N517DX): [Delta X-Ray LLC](https://openairdocs.org/faa-owner/DELTA%20X-RAY%20LLC), [Indianapolis, IN](https://openairdocs.org/faa-place/IN/Indianapolis), S/N 517
- [N533BG](https://openairdocs.org/aircraft/N533BG): [Guerin Marianne](https://openairdocs.org/faa-owner/GUERIN%20MARIANNE), [Lafayette, CA](https://openairdocs.org/faa-place/CA/Lafayette), built 2007, S/N 533
- [N57CG](https://openairdocs.org/aircraft/N57CG): [Chicago Glider Club](https://openairdocs.org/faa-owner/CHICAGO%20GLIDER%20CLUB), [Minooka, IL](https://openairdocs.org/faa-place/IL/Minooka), built 1999, S/N 217
- [N60BP](https://openairdocs.org/aircraft/N60BP): [Harris Hill Soaring Corp](https://openairdocs.org/faa-owner/HARRIS%20HILL%20SOARING%20CORP), [Horseheads, NY](https://openairdocs.org/faa-place/NY/Horseheads), built 2003, S/N 380
- [N617T](https://openairdocs.org/aircraft/N617T): [Buenafe Constance](https://openairdocs.org/faa-owner/BUENAFE%20CONSTANCE), [Santa Fe, NM](https://openairdocs.org/faa-place/NM/Santa%20Fe), S/N 210
- [N620JF](https://openairdocs.org/aircraft/N620JF): [Duo D LLC](https://openairdocs.org/faa-owner/DUO%20D%20LLC), [Salem, VA](https://openairdocs.org/faa-place/VA/Salem), built 2025, S/N 004
- [N65SF](https://openairdocs.org/aircraft/N65SF): [Eaglewings LLC](https://openairdocs.org/faa-owner/EAGLEWINGS%20LLC), [Earlysville, VA](https://openairdocs.org/faa-place/VA/Earlysville), built 2005, S/N 460
- [N65VL](https://openairdocs.org/aircraft/N65VL): [Buenafe Constance A](https://openairdocs.org/faa-owner/BUENAFE%20CONSTANCE%20A), [Santa Fe, NM](https://openairdocs.org/faa-place/NM/Santa%20Fe), built 2001, S/N 317
- [N678GB](https://openairdocs.org/aircraft/N678GB): [J2j LLC](https://openairdocs.org/faa-owner/J2J%20LLC), [Cheyenne, WY](https://openairdocs.org/faa-place/WY/Cheyenne), built 2016, S/N 678
- [N721DD](https://openairdocs.org/aircraft/N721DD): [Mcdowell Samuel](https://openairdocs.org/faa-owner/MCDOWELL%20SAMUEL), [Carlsbad, NM](https://openairdocs.org/faa-place/NM/Carlsbad), S/N 177
- [N909BB](https://openairdocs.org/aircraft/N909BB): [Four Delta Tango LLC](https://openairdocs.org/faa-owner/FOUR%20DELTA%20TANGO%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2005, S/N 465
- [N90BP](https://openairdocs.org/aircraft/N90BP): [Philadelphia Glider Council Inc](https://openairdocs.org/faa-owner/PHILADELPHIA%20GLIDER%20COUNCIL%20INC), [Hilltown, PA](https://openairdocs.org/faa-place/PA/Hilltown), built 2004, S/N 414
- [N982KA](https://openairdocs.org/aircraft/N982KA): [Alley Lynn D](https://openairdocs.org/faa-owner/ALLEY%20LYNN%20D), [Bountiful, UT](https://openairdocs.org/faa-place/UT/Bountiful), built 1998, S/N 163
- [N990DD](https://openairdocs.org/aircraft/N990DD): [Gibbons Robert C](https://openairdocs.org/faa-owner/GIBBONS%20ROBERT%20C), [Richardson, TX](https://openairdocs.org/faa-place/TX/Richardson), built 2025, S/N 005

## NTSB investigations (3)

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 GAA17CA063](https://openairdocs.org/ntsb/GAA17CA063), Nov 5, 2016: Schempp-Hirth Flugzeugbau DUO Discus (N484KS), Port Matilda, PA, no damage. Probable cause: The bystander's decision to walk onto the runway, which resulted in him being struck by the glider's left wing.
- [NTSB CEN11CA440](https://openairdocs.org/ntsb/CEN11CA440), Jul 1, 2011: Schempp-Hirth Flugzeugbau DUO Discus (N533BG), Stonewall, TX, substantial damage. Probable cause: The loss of directional control during an off-field landing in gusting wind.
- [NTSB LAX97LA265](https://openairdocs.org/ntsb/LAX97LA265), Jul 24, 1997: Schempp-Hirth DUO Discus (N125DD), Minden, NV, substantial damage. Probable cause: The pilot's failure to ensure that the wings were maintained at a lateral level attitude during the initial landing rollout. A factor in the accident was the rough, uneven nature of the terrain…

## FAA accident and incident reports (3)

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 20161105023239A](https://openairdocs.org/incident/20161105023239A), Nov 5, 2016: Schempp-Hirth Flugzeugbau DUO DISCUS (N484KS), Port Matilda, PA, No damage. During the landing roll out, as the glider was almost stopped, the left wing struck a photographer who had unknowingly moved onto the runway into it's path.…
- [Incident 20140824016289I](https://openairdocs.org/incident/20140824016289I), Aug 24, 2014: Schempp-Hirth Flugzeugbau DUO DISCUS (N533BG), Carson City, NV, Minor damage. During a flight from air sailing glider port, Nevada to bridgeport California and return, the pilot stated he lost lift in the vicinity of Carson City Nevada…
- [Accident 20110701019869A](https://openairdocs.org/incident/20110701019869A), Jul 1, 2011: Schempp-Hirth Flugzeugbau DUO DISCUS (N533BG), Stonewall, TX, Substantial damage. Pilot was conducting 14 CFR part 91 operations in the local area. Pilot was not able to to maintain altitude due to loss of thermal lift. Pilot initiated an…

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.