Aircraft record

N7172Z1970 Hughes 500C

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jun 18, 2012.

Safety record in brief:1 NTSB accident (substantial damage, Feb 1995)3 ADs may apply

Registration: Deregistered
Last based in: Dereham Norfolk; owner city / state
Engine: 250-C20 SER · 420 hp; Allison
Owners: 1; since 2006
NTSB events: 1; substantial, 1995
ADs may apply: 3; confirm with A&P
Service reports: 0; since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026

Last registered owner: Southern Aircraft Consultancy INC Trustee
Owner type: Corporation
City, state: Dereham Norfolk
Certificate issued: Nov 7, 2006
Canceled: Jun 18, 2012
Airworthiness: Standard · Normal
Airworthiness date: Jun 19, 1990

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer: Hughes
Model: 500C
Year: 1970
Serial number: 1220438S
Aircraft type: Rotorcraft
Category: Land
Certification: Type Certificated
Seats: 6
Engines: 1
Max takeoff weight: Up to 12,499 lb
Type certificate data sheet: H3WE
Mode S code: A998C4

Engine

Make and model: Allison 250-C20 Ser
Type: Turbo-shaft
Power: 420 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records

2006 – 2012Southern Aircraft Consultancy INC TrusteeDereham Norfolk
1964 – 1971Individual ownerLos Fresnos, TX · different airframe: Piper Pa-25-235 S/N 253038

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · substantial damage

Feb 20, 1995 · Key Largo, FL

The pilot's misjudgment of altitude and failure to apply collective cushioning pitch during an autorotation resulting in a hard landing. Contributing to the accident was a total loss of engine power due to a loose coupling B-nut on the pneumatic fuel control system, and improper maintenance inspection of helicopter by unknown maintenance personnel.

Damage: Substantial
Injuries: None
Report: MIA95LA078

From NTSB records; matched by serial number.Read NTSB report (search CAROL for MIA95LA078)

ADs published since 1998 that may apply (3)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

AD	Subject	Effective	Applies to
2006-16-04	Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…	Sep 7, 2006	Engine (250-C20 SER)
2006-13-06	Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…	Jul 26, 2006	Engine (250-C20 SER)Only with: Engines with gas producer rotor assembly tie bolt P/Ns A23008020, E23008020 (EXTEX), 23008020, 6843388, 6876991 (RRC), A23008020 (SAP), or 23008020P (Pacific Sky Supply) installed.
2005-10-13	Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E…	Jun 22, 2005	Engine (250-C20 SER)Only with: Engines that do not have turbine energy absorbing ring RRC P/N 23035175, or an equivalent FAA-approved serviceable ring, installed.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (0)

No Service Difficulty Reports found for this airframe since 1995.

Sources

FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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