Turbine helicopter

N18GH

McDonnell Douglas DOUGLAS 520N Turbine Helicopters

Registered 1 NTSB/FAA record
Built
—
Serial
LN014
Class
Turbine helicopter
Engines
Rolls-Royce 250-C20R
Status
Current as of October 2026
Registered owner
City and County of Honolulu (Government)
Based
Honolulu, HI
Registration record

N18GH on the FAA register

Type
McDonnell Douglas DOUGLAS 520N Turbine Helicopters (FAA: McDonnell Douglas 500N)
Serial
LN014
Engines
Rolls-Royce 250-C20R
Registered owner
City and County of Honolulu
Honolulu, HI
Certificate issued
2017-08-23
Airworthiness date
2006-08-17
Registration expires
2027-08-31
Airworthiness class
Standard · normal
Mode S (hex)
A13EF1
Mode S (octal)
50237361
Seats (type)
4
Weight class
up to 12,499 lb
Range (type)
250 nm
Cruise (type)
123 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2027-08-31
    Registration expires (renewal due).
  • 2017-08-23
    Certificate of registration issued as N18GH to the current registrant.
  • 2014-08-12
    Accident at Idaho Falls, ID; damage: substantial.
  • 2006-08-17
    Airworthiness date on the current FAA record (standard category (normal)).
  • 1999-06-30
    N18GH previously assigned to a Homebuilt Pietenpol Air-Camper (s/n GH1); cancelled.
Overview

About N18GH

N18GH is a McDonnell Douglas DOUGLAS 520N Turbine Helicopters (FAA model 500N), serial number LN014. The FAA register lists City and County of Honolulu as the registrant in Honolulu, Hawaii. The current certificate of registration was issued on August 23, 2017 and expires on August 31, 2027.

The FAA aircraft reference file describes the type as a turbine helicopter, one Rolls-Royce 250-C20R engine and 4 seats. Published figures for the type give a cruise speed of about 123 knots and a range of about 250 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated August 17, 2006.

N18GH has 1 accident/incident record on file (most serious damage: substantial); details are below. 1 earlier record involves a different aircraft that carried the same N-number.

Cruise
123 kt
Range
250 nm
Fuel burn
12 gph

Published figures for the McDonnell Douglas DOUGLAS 520N Turbine Helicopters type. They describe the model, not this airframe's equipment or condition.

Safety record

Accident & incident history

2014-08-12 Accident · Idaho Falls, ID Damage: Substantial NTSB · WPR14LA341
Reported aircraft: McDonnell Douglas 500N
Probable cause: The pilot s loss of helicopter control for reasons that could not be determined because postaccident examination of the helicopter did not reveal any mechanical malfunctions or failures that would have precluded normal operation.
1995-09-12 Accident · Redmond, OR Damage: Substantial NTSB · SEA95LA219
Reported aircraft: Pietenpol Air-Camper — a different aircraft that carried the N18GH registration before this airframe.
Probable cause: a loss of engine power for undetermined reasons.

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.