- Registered owner
- Cantwell Paul M
- Location
- Momence, IL
- Owner type
- Individual
- Serial number
- 11
- Year built
- 1993
- Type
- Glider
- Engine
- None
- Airworthiness
- Experimental, amateur built
- Airworthiness date
- April 16, 1999
- Certificate issued
- September 4, 2018
- Expires
- September 30, 2028
- Mode S code
- A1B8CF
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 0
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
No ADs matched this aircraft’s modelsADs on appliances, propellers and installed equipment aren’t matched by model; check those separately.
Information bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations
No NTSB investigations matched to N21SXMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Luebke Ralph C STD CLS AMER SPIRIT aircraft
Investigations on N21SX not matched to an aircraft · 1
They name N21SX, but no registry record covers the date, the aircraft registered then was built later, or the investigation describes another aircraft.
FAA incident reports
No FAA accident or incident reports matched to N21SXMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Luebke Ralph C STD CLS AMER SPIRIT aircraft
Reports on N21SX not matched to an aircraft · 1
They name N21SX, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.
Service difficulty reports
No reports matched to N21SXGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Luebke Ralph C STD CLS AMER SPIRIT aircraft
STCs that may be installed
No STCs matched this aircraft’s modelsSTCs change type-certificated designs, and this aircraft isn’t type certificated.