# N423: Maximum Safety MAXIMUM M4L, registration cancelled 1930-05-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 7, 1930
- Status when cancelled: Valid registration
- Airframe: [Maximum Safety MAXIMUM M4L](https://openairdocs.org/model/maximum-safety-maximum-m4l) (registry code 0563818)
- Serial number: 1
- Type of aircraft: Fixed wing single engine
- Mode S code: A506C3
- Owner when cancelled: [Maximum Safety Airplane Co Inc](https://openairdocs.org/faa-owner/MAXIMUM%20SAFETY%20AIRPLANE%20CO%20INC)
- Location: [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N423
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=423
- Page: https://openairdocs.org/deregistered/N423-1930-05-07

From the FAA registry file of October 29, 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 Maximum Safety MAXIMUM M4L: https://openairdocs.org/model/maximum-safety-maximum-m4l.md

## Other aircraft with N423

- [Registered now](https://openairdocs.org/aircraft/N423): Gulfstream American AA-5B, S/N AA5B0986, built 1978

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.