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Registered aircraft · FAA record as of October 30, 2026Test Spol Sro TST-14M BONUS
N107SM is a Test Spol Sro TST-14M BONUS, a glider with a two-stroke engine, built in 2006. It has 2 seats. It is registered to an individual in Chestertown, Maryland. The registration is valid: it was issued on May 8, 2019 and expires on May 31, 2029. It holds a light sport airworthiness certificate for glider, dated June 20, 2007.
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Flight history: where it flew in the last seven days · follow it on the live map
Aircraft
- Maker
- Test Spol Sro
- Model
- TST-14M BONUS
- Serial number
- 14010906
- Type
- GliderFAA type of aircraft code 1 (the FAA's broad category for the airframe). Every aircraft with this code · All codes
- Power
- Two-cycle pistonFAA type of engine code 7 (what powers it, as the FAA classes engines). Every aircraft with this code · All codes, 1 motor · Rotax 503UL · 52 hp
- Seats
- 2
- Year built
- 2006
- Transponder code
- A02051 (octal 50020121)
Registration
- Status
- Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
- Certificate issued
- May 8, 2019
- Expires
- May 31, 2029
- Last FAA action
- August 4, 2023
- Airworthiness
- Light sportFAA airworthiness class code 9 (the kind of airworthiness certificate it flies under and what it is approved for). Every aircraft with this code · All codes · GliderFAA certificate purpose code G (the kind of airworthiness certificate it flies under and what it is approved for). All codes · June 20, 2007
- FAA region
- EasternFAA region code 1 (the FAA regional office that handles the record). All codes
- FAA record id
- 00338229
Owner as the FAA publishes it
- Name
- Dierker Robert R
- Type
- IndividualFAA type of owner code 1 (who holds the registration: a person, a company, a trust or a government body). Every aircraft with this code · All codes
- Address
- 25235 Foxchase Dr
Chestertown, MD 21620-3409
Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.
Documents on file 0
No bills of sale, loans or other documents are indexed against this tail number.
Earlier use of this number 1
Connections how N107SM links to the rest of the register
- Test Spol Sro 2 aircraft on the register
- Rotax 503UL 24 aircraft with this engine series · 52 hp
- Chestertown, MD 22 aircraft registered in this town
- Maryland 2,348 aircraft registered
The whole map of how records connect · these connections as data: /graph/aircraft/N107SM.json.
Records check free · 2 to understand · 3 clear
The public federal record on N107SM, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Dierker Robert R, an individual, certificate issued May 8, 2019, expires May 31, 2029. No fractional interest recorded. [1]
Light sport certificate for glider, dated June 20, 2007, consistent with the 2006 manufacture year. [1]
No earlier tail number is recorded against serial 14010906 for this model in the deregistered file. [2]
N107SM was previously assigned to 1 other aircraft: Schweizer 269C-1 (serial 0011, cancelled March 11, 1999). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
1 NTSB record under N107SM: Accident on May 13, 1997 at Laredo, TX: no injuries, substantial damage. Details below. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
NTSB records 1
Aircraft on the NTSB record: Schweizer 269C · operated under 091
loss of engine power due to fuel contamination, and the pilot's failure to properly check the fuel system for evidence of water during the preflight inspection. A factor was the lack of suitable terrain for the forced landing.
Full record in plain English · Docket and reports at the NTSB
- FAA Releasable Aircraft Database, master file, file of October 30, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 30, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 30, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through October 28, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 30, 2026. See this record on the FAA site · This record as data