Single-engine piston

N91AB

1991 Homebuilt RV-4

Registered No accidents on file
Built
1991
Serial
2423
Class
Single-engine piston
Engines
Lycoming O-320 series
Status
Current as of October 2026
Registered owner
Mac Services of Ocala LLC (LLC)
Based
Ocala, FL
Registration record

N91AB on the FAA register

Type
1991 Homebuilt RV-4
Serial
2423
Engines
Lycoming O-320 series
Registered owner
Mac Services of Ocala LLC
Ocala, FL
Certificate issued
2024-10-16
Airworthiness date
1991-04-11
Registration expires
2031-10-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
AC9454
Mode S (octal)
53112124
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2031-10-31
    Registration expires (renewal due).
  • 2024-10-16
    Certificate of registration issued as N91AB.
  • 1991-04-11
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N91AB

N91AB is a 1991 Homebuilt RV-4, serial number 2423. The FAA register lists Mac Services of Ocala LLC as the registrant in Ocala, Florida. The current certificate of registration was issued on October 16, 2024 and expires on October 31, 2031.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-320 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated April 11, 1991.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N91AB.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N91AB.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

Same state

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Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.