Twin turboprop

N399CZ

1969 Beechcraft 99

Registered 1 NTSB/FAA record
Built
1969
Serial
U-91
Class
Twin turboprop
Engines
2 × Pratt & Whitney PT6A series
Status
Current as of October 2026
Registered owner
N399Cz LLC (LLC)
Based
Milwaukee, WI
Registration record

N399CZ on the FAA register

Type
1969 Beechcraft 99
Serial
U-91
Engines
2 × Pratt & Whitney PT6A series
Registered owner
N399Cz LLC
Milwaukee, WI
Certificate issued
2019-10-01
Airworthiness date
1994-02-22
Registration expires
2029-10-31
Airworthiness class
Standard · normal
Mode S (hex)
A4A482
Mode S (octal)
51122202
Seats (type)
17
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-10-31
    Registration expires (renewal due).
  • 2019-10-01
    Certificate of registration issued as N399CZ to the current registrant.
  • 2004-08-20
    N399CZ previously assigned to a Beechcraft 99 (s/n U52); cancelled.
  • 2003-12-16
    Accident at Mosinee, WI; damage: substantial.
  • 1994-02-22
    Airworthiness date on the current FAA record (standard category (normal)).
  • 1969
    Manufactured (1969).
Overview

About N399CZ

N399CZ is a 1969 Beechcraft 99, serial number U-91. The FAA register lists N399Cz LLC as the registrant in Milwaukee, Wisconsin. The current certificate of registration was issued on October 1, 2019 and expires on October 31, 2029.

The FAA aircraft reference file describes the type as a twin turboprop, two Pratt & Whitney PT6A series engines and 17 seats. Its airworthiness certificate is standard category (normal), dated February 22, 1994.

N399CZ has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2003-12-16 Accident · Mosinee, WI Damage: Substantial NTSB · CHI04LA042
Reported aircraft: Beechcraft 99
Probable cause: The pilot's failure to maintain the proper descent rate and his inadequate flare.

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

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Browse: Beechcraft aircraft for sale· Aircraft registered in Wisconsin· Registry by state· FAA registry stats

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.