Twin piston

N251K

1956 Beechcraft H18S

Registered 1 NTSB/FAA record
Built
1956
Serial
BA-170
Class
Twin piston
Engines
2 × Pratt & Whitney R-985 series
Status
Current as of October 2026
Registered owner
Neenah Classic Aircraft LLC (LLC)
Based
Neenah, WI
Registration record

N251K on the FAA register

Type
1956 Beechcraft H18S (FAA: Beechcraft E18S)
Serial
BA-170
Engines
2 × Pratt & Whitney R-985 series
Registered owner
Neenah Classic Aircraft LLC
Neenah, WI
Certificate issued
2007-08-21
Airworthiness date
1956-06-18
Registration expires
2028-06-30
Airworthiness class
Standard
Mode S (hex)
A25C16
Mode S (octal)
50456026
Seats (type)
10
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2028-06-30
    Registration expires (renewal due).
  • 2007-08-21
    Certificate of registration issued as N251K to the current registrant.
  • 1973-11-01
    Accident at Chicago,Ill, 13; damage: substantial.
  • 1956-06-18
    Airworthiness date on the current FAA record (standard category).
  • 1954-01-06
    N251K previously assigned to a Howard Aircraft NH-1 (s/n 775); cancelled.
  • 1932-12-15
    N251K previously assigned to a Homebuilt Super Parasol (s/n P-215); cancelled.
Overview

About N251K

N251K is a 1956 Beechcraft H18S (FAA model E18S), serial number BA-170. The FAA register lists Neenah Classic Aircraft LLC as the registrant in Neenah, Wisconsin. The current certificate of registration was issued on August 21, 2007 and expires on June 30, 2028.

The FAA aircraft reference file describes the type as a twin piston, two Pratt & Whitney R-985 series engines and 10 seats. Its airworthiness certificate is standard category, dated June 18, 1956.

N251K has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

1973-11-01 Accident · Chicago,Ill, 13 Damage: Substantial NTSB · 3 3409
Reported aircraft: Beechcraft E18E
Probable cause: NAV,ANTI-COLL,L TAXI LT ON.OBS SAW NO LTS ON ACFT.

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

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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.