Piston helicopter

N5690K

Enstrom F-28C

Registered 1 NTSB/FAA record
Built
—
Serial
477
Class
Piston helicopter
Engines
Lycoming HIO-360 series
Status
Current as of October 2026
Registered owner
Aircraft Guaranty Corp Trustee (Corporation)
Based
Oklahoma City, OK
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Registration record

N5690K on the FAA register

Type
Enstrom F-28C
Serial
477
Engines
Lycoming HIO-360 series
Registered owner
Aircraft Guaranty Corp Trustee
Oklahoma City, OK
Certificate issued
2014-01-07
Airworthiness date
1979-06-29
Registration expires
2030-01-31
Airworthiness class
Standard · normal
Mode S (hex)
A74ABB
Mode S (octal)
51645273
Seats (type)
3
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2030-01-31
    Registration expires (renewal due).
  • 2014-01-07
    Certificate of registration issued as N5690K.
  • 2005-04-13
    Accident at Morrison, CO; damage: substantial.
  • 1979-06-29
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N5690K

N5690K is an Enstrom F-28C, serial number 477. The FAA register lists Aircraft Guaranty Corp Trustee as the registrant in Oklahoma City, Oklahoma. The current certificate of registration was issued on January 7, 2014 and expires on January 31, 2030.

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 June 29, 1979.

N5690K has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2005-04-13 Accident · Morrison, CO Damage: Substantial NTSB · DEN05LA068
Reported aircraft: Enstrom F-28C
Probable cause: the pilot's failure to maintain rotor RPM during the approach which resulted in a landing short of the helipad.

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

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Browse: Enstrom aircraft for sale· Aircraft registered in Oklahoma· 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.