Luebke Ralph C STD CLS AMER SPIRIT
N21SX is a Luebke Ralph C STD CLS AMER SPIRIT, a glider with no engine, built in 1993. It has 1 seat. It is registered to an individual in Momence, Illinois. The registration is valid: it was issued on September 4, 2018 and expires on September 30, 2028. It holds an experimental airworthiness certificate for amateur built, dated April 16, 1999.
Aircraft
- Maker
- Luebke Ralph C
- Model
- STD CLS AMER SPIRIT
- Serial number
- 11
- Type
- Glider
- Power
- None · None NONE
- Seats
- 1
- Year built
- 1993
- Transponder code
- A1B8CF (octal 50334317)
Registration
- Status
- Valid registration
- Certificate issued
- September 4, 2018
- Expires
- September 30, 2028
- Last FAA action
- June 10, 2023
- Airworthiness
- Experimental · Amateur built · April 16, 1999
- FAA region
- Great Lakes
- FAA record id
- 00694652
Owner as the FAA publishes it
- Name
- Cantwell Paul M
- Type
- Individual
- Address
- 12356 E Metcalf Ave
Momence, IL 60954-3231
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.
Records check free · 2 to understand · 3 clear
The public federal record on N21SX, 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 Cantwell Paul M, an individual, certificate issued September 4, 2018, expires September 30, 2028. No fractional interest recorded. [1]
The airworthiness certificate on file is dated April 16, 1999, 6 years after the 1993 manufacture year. A re-issued certificate commonly follows export and re-import, a rebuild, or a return to the register after cancellation. The cause is documented in the FAA aircraft records file, which the full report obtains. [1]
No earlier tail number is recorded against serial 11 for this model in the deregistered file. [2]
No other airframe has carried N21SX according to the deregistered file. [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 N21SX: Accident on September 7, 1990 at Memphis, TN: serious 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: Schleicher ASK-21 · operated under 091
AN INFLIGHT COLLISION WITH A TREE DUE TO MISJUDGING HIS GLIDEPATH.
Search the NTSB's CAROL system for ATL90LA168 for the docket and final report. Open CAROL
- FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through August 27, 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 2, 2026. See this record on the FAA site · This record as data