# N4446T: 1983 Burkhart Grob G 103 TWIN II

- Status: Valid registration
- Airframe: [Burkhart Grob G 103 TWIN II](https://openairdocs.org/model/burkhart-grob-g-103-twin-ii) (registry code 1660203, 2 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G39EU](https://openairdocs.org/tcds/G39EU) (Fiberglas-Technik Rudolf Lindner GmbH & Co. KG) (OpenAirDocs)
- Serial number: 3824
- Year built: 1983
- Type: Glider
- Engine type: None
- Airworthiness: Standard, glider
- Airworthiness date: September 13, 1983
- Certificate issued: December 28, 2018
- Expires: December 31, 2028
- Mode S code: A55CB5
- Registered owner: [Weller Steven C](https://openairdocs.org/faa-owner/WELLER%20STEVEN%20C)
- Location: [Hummelstown, PA](https://openairdocs.org/faa-place/PA/Hummelstown)
- Owner type: Individual
- Owner's area on the map: 40.2582° N, 76.7202° W: Placed by OpenAirDocs at the center of ZIP code 17036, 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=4446T
- Page: https://openairdocs.org/aircraft/N4446T

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): 15 in force

### Matched by airframe (Burkhart Grob G 103 TWIN II)

- [AD 2025-20-07](https://openairdocs.org/ad/2025-20-07): Rudder Control System · Fiberglas-Technik Rudolf Lindner G103 Twin II, G103A Twin II Acro, G103C Twin III Acro and 1 more. Effective Oct 17, 2025
- [AD 2022-03-08](https://openairdocs.org/ad/2022-03-08): Elevator Control System · Fiberglas-Technik Rudolf Lindner G102 ASTIR CS, G103 Twin Astir, G103 Twin II and 3 more. Effective Mar 17, 2022
- [AD 2015-22-04](https://openairdocs.org/ad/2015-22-04): Flight Controls · Fiberglas-Technik Rudolf Lindner G103 Twin Astir, G103 Twin II and G103A Twin II Acro. Effective Dec 4, 2015
- [AD 2009-04-08](https://openairdocs.org/ad/2009-04-08): Bolt torque · Burkhart Grob Luft-Und G 103 C Twin III SL, G103 Twin II, G103A Twin II Acro and 1 more. Effective Mar 31, 2009
- [AD 2005-26-12](https://openairdocs.org/ad/2005-26-12): Center of gravity (CG) release hook attachment brackets. · Burkhart Grob Luft-Und G 103 C Twin III SL, G103 Twin Astir, G103 Twin II and 2 more. Effective Feb 6, 2006
- [AD 99-20-11](https://openairdocs.org/ad/99-20-11): Fastening Nut At Rear Control Stick · Burkhart Grob Luft-Und G103 Twin II and G103A Twin II Acro. Effective Oct 21, 1999
- [AD 97-08-06 R1](https://openairdocs.org/ad/97-08-06-R1): Quick Connectors · Alexander Schleicher AS-K 13, AS 12, ASK 21 and 39 more. Effective Aug 1, 1997
- [AD 94-17-06](https://openairdocs.org/ad/94-17-06): Airbrake Stops Inspection · Burkhart Grob Luft-Und G 103 C Twin III SL, G103 Twin Astir, G103 Twin II and 8 more. Effective Sep 30, 1994
- [AD 91-02-04](https://openairdocs.org/ad/91-02-04): Aileron Control System · Burkhart Grob Luft-Und G103 Twin Astir, G103 Twin II and G103A Twin II Acro. Effective Feb 8, 1991
- [AD 90-02-09](https://openairdocs.org/ad/90-02-09): Wing Spar Spigots · Burkhart Grob Luft-Und G103 Twin Astir, G103 Twin II and G103A Twin II Acro. Effective Feb 5, 1990
- [AD 89-08-02](https://openairdocs.org/ad/89-08-02): Control Systems · Burkhart Grob Luft-Und G103 Twin II and G103A Twin II Acro. Effective Apr 27, 1989
- [AD 88-12-08](https://openairdocs.org/ad/88-12-08): Tow-Hook Knob · Burkhart Grob Luft-Und G103 Twin Astir, G103 Twin II and G103A Twin II Acro. Effective Jun 9, 1988
- [AD 87-25-10](https://openairdocs.org/ad/87-25-10): Rudder Lever · Burkhart Grob Luft-Und G103 Twin II and G103A Twin II Acro. Effective Apr 15, 1988
- [AD 86-17-08](https://openairdocs.org/ad/86-17-08): Airbrake Pivot Lever Stop Pad · Burkhart Grob Luft-Und G103 Twin II and G103A Twin II Acro. Effective Sep 10, 1986
- [AD 86-16-02](https://openairdocs.org/ad/86-16-02): Inspect Airbrake Operating Lever · Burkhart Grob Luft-Und G103 Twin II and G103A Twin II Acro. Effective Aug 8, 1986

### Matched by engine (NONE)

None in force.

### Historical (superseded or no longer in force)

- [AD 2014-15-02](https://openairdocs.org/ad/2014-15-02) (historical): Flight Controls · Burkhart Grob Luft-Und G 103 C Twin III SL, G103 Twin II, G103A Twin II Acro and 4 more. Effective Aug 27, 2014
- [AD 2004-08-13](https://openairdocs.org/ad/2004-08-13) (historical): Center of gravity release hook attachment brackets · Burkhart Grob Luft-Und G103 Twin Astir, G103 Twin II, G103A Twin II Acro and 1 more. Effective Jun 4, 2004

## Information bulletins (advisory) (2 in force)

- [SAIB CE-08-01](https://openairdocs.org/saib/CE-08-01): Fuselage, Wing, & Stabilizer Structure. Issued Oct 18, 2007
- [SAIB CE-06-49](https://openairdocs.org/saib/CE-06-49): . Issued Jun 21, 2006

## 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 NYC99LA017](https://openairdocs.org/ntsb/NYC99LA017), Oct 24, 1998: Burkhart Grob G103-TWINA (N4446T), Saratoga Spring, NY, substantial damage. Probable cause: The pilot's failure to maintain control of the glider while landing.

## 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 19981024044999A](https://openairdocs.org/incident/19981024044999A), Oct 24, 1998: Grob G103A (N4446T), Saratoga Spring, NY, Substantial damage. (.4) The purpose of the flight was to conduct a local area glider flight. The glider departed the airport, and released from the tow-plane at 3,000 feet MSL.…

## Service difficulty reports (1)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 2006FA0000545](https://openairdocs.org/sdr/2006FA0000545), May 11, 2006: RUDDER PEDAL. CRACKED. SIGNIFICANT CORROSION NOTED AT HORIZONTAL BASE OF LEFT RUDDER PEDAL. RUDDER PEDAL CRACKED AND STARTED TO DEFORM SLIGHTLY IN THE VICINITY OF THE CRACK. THE RUDDE

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N4446T

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4446T before.

- [Cancelled 1972-04-17](https://openairdocs.org/deregistered/N4446T-1972-04-17): Piper PA-32-300, S/N 32-7240060. Exported to South Africa. Owner: [International Aircraft Deliveries Inc](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIRCRAFT%20DELIVERIES%20INC), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami)

## Related

- Other Burkhart Grob G 103 TWIN II aircraft: https://openairdocs.org/model/burkhart-grob-g-103-twin-ii/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

---
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.