Single-engine turboprop

N550HZ

1972 Helio HST-550A

Registered 1 NTSB/FAA record
Built
1972
Serial
007
Class
Single-engine turboprop
Engines
Pratt & Whitney PT6A series
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Cave Creek, AZ
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Registration record

N550HZ on the FAA register

Type
1972 Helio HST-550A
Serial
007
Engines
Pratt & Whitney PT6A series
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Cave Creek, AZ
Certificate issued
1991-12-24
Airworthiness date
1989-07-27
Registration expires
2029-07-31
Airworthiness class
Experimental · exhibition
Mode S (hex)
A70032
Mode S (octal)
51600062
Seats (type)
10
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-07-31
    Registration expires (renewal due).
  • 1992-03-01
    Accident at Salome, AZ; damage: destroyed.
  • 1991-12-24
    Certificate of registration issued as N550HZ.
  • 1989-07-27
    Airworthiness date on the current FAA record (experimental category (exhibition)).
  • 1972
    Manufactured (1972).
Overview

About N550HZ

N550HZ is a 1972 Helio HST-550A, serial number 007. It is registered to an individual in Cave Creek, Arizona. The current certificate of registration was issued on December 24, 1991 and expires on July 31, 2029.

The FAA aircraft reference file describes the type as a single-engine turboprop, one Pratt & Whitney PT6A series engine and 10 seats. Its airworthiness certificate is experimental category (exhibition), dated July 27, 1989.

N550HZ has 1 accident/incident record on file (most serious damage: destroyed); details are below.

Safety record

Accident & incident history

1992-03-01 Accident · Salome, AZ Damage: Destroyed Minor injury NTSB · LAX92LA133
Reported aircraft: Helio HST-550A
Probable cause: THE PILOT'S INADEQUATE IN-FLIGHT PLANNING, IMPROPER ALTITUDE, AND DELAYING THE REQUIRED REMEDIAL ACTION TO PREVENT THE COLLISION WITH THE MOUNTAIN. CONTRIBUTING TO THE ACCIDENT WAS THE UNFAVORABLE WIND AND DOWNDRAFT CONDITIONS.

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

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Browse: Aircraft registered in Arizona· 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.