Twin turboprop

N3644B

1984 Piper Cheyenne III

Registered No accidents on file
Built
1984
Serial
425501014
Class
Twin turboprop
Engines
2 × Pratt & Whitney Canada PT6A-61
Status
Current as of October 2026
Registered owner
September Bravo Enterprises LLC (LLC)
Based
West Olive, MI
Registration record

N3644B on the FAA register

Type
1984 Piper Cheyenne III (FAA: Piper PA-42-720)
Serial
425501014
Engines
2 × Pratt & Whitney Canada PT6A-61
Registered owner
September Bravo Enterprises LLC
West Olive, MI
Certificate issued
2014-02-19
Airworthiness date
2014-06-19
Registration expires
2030-02-28
Airworthiness class
Standard · normal
Mode S (hex)
A41E0E
Mode S (octal)
51017016
Seats (type)
11
Weight class
up to 12,499 lb
Range (type)
1,600 nm
Cruise (type)
275 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2030-02-28
    Registration expires (renewal due).
  • 2014-06-19
    Airworthiness date on the current FAA record (standard category (normal)).
  • 2014-02-19
    Certificate of registration issued as N3644B to the current registrant.
  • 1984
    Manufactured (1984).
  • 1975-05-08
    N3644B previously assigned to a Beechcraft H18S / E18S (s/n BA-26); cancelled.
Overview

About N3644B

N3644B is a 1984 Piper Cheyenne III (FAA model PA-42-720), serial number 425501014. The FAA register lists September Bravo Enterprises LLC as the registrant in West Olive, Michigan. The current certificate of registration was issued on February 19, 2014 and expires on February 28, 2030.

The FAA aircraft reference file describes the type as a twin turboprop, two Pratt & Whitney Canada PT6A-61 engines and 11 seats. Published figures for the type give a cruise speed of about 275 knots and a range of about 1,600 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated June 19, 2014.

No NTSB accident or incident reports and no FAA preliminary notices are on file for this airframe as N3644B. 1 earlier record involves a different aircraft that carried the same N-number.

Cruise
275 kt
Range
1,600 nm
Power / thrust (each)
720
Takeoff over 50 ft
3,230 ft
Landing over 50 ft
3,017 ft
Fuel burn
118 gph

Published figures for the Piper Cheyenne III type. They describe the model, not this airframe's equipment or condition.

Safety record

Accident & incident history

1973-11-05 Accident · F.Leonard Wood,Mo, 25 Damage: Substantial NTSB · 3 3363
Reported aircraft: Beechcraft E18S — a different aircraft that carried the N3644B registration before this airframe.
Probable cause: STUDS BKN.L BRAKE LINE DESTROYED BY FIRE.

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.