Turbine helicopter

N411KS

1973 Bell 206B III

Registered No accidents on file
Built
1973
Serial
1128
Class
Turbine helicopter
Engines
Allison 250 SER 400HP
Status
Current as of October 2026
Registered owner
Northwest Helicopters LLC (LLC)
Based
Olympia, WA
1973 Bell 206B III
Representative photo of a Bell 206B III. Not a photo of N411KS.
Registration record

N411KS on the FAA register

Type
1973 Bell 206B III
Serial
1128
Engines
Allison 250 SER 400HP
Registered owner
Northwest Helicopters LLC
Olympia, WA
Certificate issued
2024-04-10
Airworthiness date
1973-08-20
Registration expires
2031-04-30
Airworthiness class
Standard · normal
Mode S (hex)
A4D8C9
Mode S (octal)
51154311
Seats (type)
5
Weight class
up to 12,499 lb
Range (type)
379 nm
Cruise (type)
118 kt
Status
Current as of October 2026
Market asking range
$510,000 to $624,500
Middle half of 5 live Bell 206B III listings, 1974–1980 models (median $558,726). Asking prices, not an appraisal of N411KS.
Registry history

Timeline

  • 2031-04-30
    Registration expires (renewal due).
  • 2024-04-10
    Certificate of registration issued as N411KS.
  • 1973-08-20
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N411KS

N411KS is a 1973 Bell 206B III, serial number 1128. The FAA register lists Northwest Helicopters LLC as the registrant in Olympia, Washington. The current certificate of registration was issued on April 10, 2024 and expires on April 30, 2031.

The FAA aircraft reference file describes the type as a turbine helicopter, one Allison 250 SER 400HP engine and 5 seats. Published figures for the type give a cruise speed of about 118 knots and a range of about 379 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated August 20, 1973.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N411KS.

Cruise
118 kt
Range
379 nm
Fuel burn
11 gph

Published figures for the Bell 206B III type. They describe the model, not this airframe's equipment or condition. Bell 206B III specs, prices and for-sale inventory →

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N411KS.

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

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Browse: Bell aircraft for sale· Bell 206B III overview· Aircraft registered in Washington· 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.