Piston helicopter

N171DH

Enstrom F28F

Registered No accidents on file
Built
—
Serial
757
Class
Piston helicopter
Engines
Lycoming HIO-360 series
Status
Current as of October 2026
Registered owner
Oul LLC (LLC)
Based
Hermon, ME
Registration record

N171DH on the FAA register

Type
Enstrom F28F (FAA: Enstrom F-28F)
Serial
757
Engines
Lycoming HIO-360 series
Registered owner
Oul LLC
Hermon, ME
Certificate issued
2018-09-08
Airworthiness date
1988-09-12
Registration expires
2028-09-30
Airworthiness class
Standard · normal
Mode S (hex)
A11D37
Mode S (octal)
50216467
Seats (type)
3
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2028-09-30
    Registration expires (renewal due).
  • 2018-09-08
    Certificate of registration issued as N171DH.
  • 1988-09-12
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N171DH

N171DH is an Enstrom F28F (FAA model F-28F), serial number 757. The FAA register lists Oul LLC as the registrant in Hermon, Maine. The current certificate of registration was issued on September 8, 2018 and expires on September 30, 2028.

The FAA aircraft reference file describes the type as a piston helicopter, one Lycoming HIO-360 series engine and 3 seats. Its airworthiness certificate is standard category (normal), dated September 12, 1988.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N171DH.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N171DH.

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.