# N100SQ: Learjet 24, registration cancelled 2009-06-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 17, 2009
- Status when cancelled: Registration revoked
- Airframe: [Learjet 24](https://openairdocs.org/model/learjet-24) (registry code 5170302)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 113
- Type of aircraft: Fixed wing multi engine
- Airworthiness: Standard, transport
- Airworthiness date: May 24, 1966
- Certificate issued: April 21, 1977
- Last registry action: April 23, 1977
- Mode S code: A00653
- Owner when cancelled: [Brandis Aircraft](https://openairdocs.org/faa-owner/BRANDIS%20AIRCRAFT)
- Location: [Springfield, IL](https://openairdocs.org/faa-place/IL/Springfield)
- Owner type: Partnership
- Owner's area on the map: 39.8017° N, 89.6437° W: Placed by OpenAirDocs: center of Springfield, IL, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N100SQ
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=100SQ
- Page: https://openairdocs.org/deregistered/N100SQ-2009-06-17

From the FAA registry file of November 3, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Learjet 24: https://openairdocs.org/model/learjet-24.md

## 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 CHI73AC072](https://openairdocs.org/ntsb/CHI73AC072), Feb 21, 1973: Lear 24 (N100SQ), Belleville, MI, destroyed, 2 fatal

## 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 19730221003749A](https://openairdocs.org/incident/19730221003749A), Feb 21, 1973: Lear 24C (N100SQ), Belleville, MI, Destroyed. Landed long,hit LOC antennae and ILS bldg. Did not stow spoilers on go around.

## Other aircraft with N100SQ

- [Registered now](https://openairdocs.org/aircraft/N100SQ): Bowles Chris VANS RV9A, S/N 90359, built 2018

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