This aircraft's FAA registration was cancelled on Aug 1982 — it's no longer an active tail number. TailWiki keeps a record so its history isn't lost.

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N556MBCessna 421C · 1978

DeregisteredStandardCont Motor GTSI0-520-F-KWilmington, DE

N556MB is a 1978 Cessna 421C. It is a fixed-wing multi-engine aircraft with 8 seats, powered by a Cont Motor GTSI0-520-F-K rated at 435 horsepower. Its registration was cancelled in Aug 1982. Its standard airworthiness certificate was issued in Sep 2014. This page also carries 1 NTSB event.

1 of 513 Cessna 421C

FAA recordRegistered in Wilmington, DE in 2007 · deregistered in 1982.

More like this:Cessna 421C Aircraft in Delaware Standard

2014

FAA record · Sep 2014 · Airworthiness

Airworthiness certificate issued — Standard

Manufacturer: Cessna. Model 421C. Serial 421C0468.

2007

FAA record · Feb 2007 · Registration

Registered to last known owner

Registrant based in Wilmington, DE.

1982

FAA record · Aug 1982 · Deregistered

FAA registration cancelled

This N-number is no longer an active registration — it may have been scrapped, exported, or the number retired. The FAA can reissue cancelled N-numbers to a different aircraft entirely.

Aircraft

ManufacturerCessna

Model421C

Year1978

CategoryStandard

TypeFixed-wing multi-engine

Serial421C0468

EngineCont Motor GTSI0-520-F-K

Horsepower435

Seats8

BasedWilmington, DE

Safety record

1 NTSB event on record

Most recent: Sep 2013 · Fatal injuries.

See the Safety tab for full reports.

Registration history

Aug 1982

FAA registration cancelled

2007 — 1982

Last known registered owner · Wilmington, DE

Sep 2014

Airworthiness certificate issued

Owner locations generalized to city/state for privacy. Ownership lineage grows as TailWiki tracks daily FAA updates.

View earlier registration history

TailWiki has tracked this tail since Aug 2026. The FAA registry is a snapshot, not a history — earlier owners aren't in the public record. TailWiki reconstructs ownership changes by watching daily FAA updates going forward, so this section fills in the longer TailWiki runs.

About this record

This N-number isn't actively registered, so it can't be claimed. If the FAA reissues it to a different aircraft, that new registration gets its own page.

Keep up with N556MB

Get an alert when this aircraft's registration or ownership changes. Registry updates only — never location or flight tracking.