Turbine helicopter

N520M

1978 Bell 206B III

Registered No accidents on file
Built
1978
Serial
2454
Class
Turbine helicopter
Engines
Allison 250-C20 series
Status
Current as of October 2026
Registered owner
Derstine Air Service LLC (LLC)
Based
Souderton, PA
1978 Bell 206B III
Representative photo of a Bell 206B III. Not a photo of N520M.
Registration record

N520M on the FAA register

Type
1978 Bell 206B III
Serial
2454
Engines
Allison 250-C20 series
Registered owner
Derstine Air Service LLC
Souderton, PA
Certificate issued
2018-01-25
Airworthiness date
1999-02-02
Registration expires
2028-01-31
Airworthiness class
Standard · normal
Mode S (hex)
A68A01
Mode S (octal)
51505001
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
$527,500 to $654,415
Middle half of 6 live Bell 206B III listings, 1974–1984 models (median $578,863). Asking prices, not an appraisal of N520M.
Registry history

Timeline

  • 2028-01-31
    Registration expires (renewal due).
  • 2018-01-25
    Certificate of registration issued as N520M to the current registrant.
  • 1999-02-02
    Airworthiness date on the current FAA record (standard category (normal)).
  • 1982-06-15
    N520M previously assigned to a Lockheed 1329-23E (s/n 5159); cancelled.
  • 1978
    Manufactured (1978).
  • 1937-05-15
    N520M previously assigned to a Bach Aircraft Co 3-CT-9 (s/n 18); cancelled.
Overview

About N520M

N520M is a 1978 Bell 206B III, serial number 2454. The FAA register lists Derstine Air Service LLC as the registrant in Souderton, Pennsylvania. The current certificate of registration was issued on January 25, 2018 and expires on January 31, 2028.

The FAA aircraft reference file describes the type as a turbine helicopter, one Allison 250-C20 series 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 February 2, 1999.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N520M.

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 N520M.

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 Pennsylvania· 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.