# N12MK: Learjet 24B, registration cancelled 1977-11-15

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 15, 1977
- Status when cancelled: Valid registration
- Airframe: [Learjet 24B](https://openairdocs.org/model/learjet-24b) (registry code 5170306)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 192
- Type of aircraft: Fixed wing multi engine
- Certificate issued: March 17, 1975
- Mode S code: A05276
- Owner when cancelled: [Kratter Marvin](https://openairdocs.org/faa-owner/KRATTER%20MARVIN)
- Location: [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N12MK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=12MK
- Page: https://openairdocs.org/deregistered/N12MK-1977-11-15

From the FAA registry file of November 5, 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 24B: https://openairdocs.org/model/learjet-24b.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 LAX77AA019](https://openairdocs.org/ntsb/LAX77AA019), Jan 6, 1977: Lear Jet 24B (N12MK), Palm Springs, CA, destroyed, 4 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 19770106039189A](https://openairdocs.org/incident/19770106039189A), Jan 6, 1977: Lear 24B (N12MK), Palm Springs, CA, Destroyed, 2 fatal. Crew misinterpreted IFR clnc & ATC instructions. Controller failed to detect deviation frm route.

## Other aircraft with N12MK

- [Registered now](https://openairdocs.org/aircraft/N12MK): Cessna 421C, S/N 421C0421

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