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Aircraft record

N437DS1973 Hughes 500C

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled May 6, 2015.

Safety record in brief:1 NTSB accident (destroyed damage, Feb 2000)3 ADs may apply

Registration
Deregistered
Last based in
Agana Heights, GU
owner city / state
Engine
250-C20 SER · 420 hp
Allison
Owners
1
since 1997
NTSB events
1
destroyed, 2000
ADs may apply
3
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Heli Guam INC
Owner type
Corporation
City, state
Agana Heights, GU
Certificate issued
Jan 6, 1997
Canceled
May 6, 2015
Airworthiness
Standard · Normal
Airworthiness date
Feb 14, 1996

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
1973
Serial number
530476S
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
A53D7B

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
  1. 1997 – 2015Heli Guam INCAgana Heights, GU

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 · destroyed

Feb 18, 2000 · Pohnpei, PO

On February 18, 2000, at 1108 hours local ship time, a Hughes 500C, N437DS, crashed into the Pacific Ocean about 200 miles southeast of Pohnpei, Federated States of Micronesia, after takeoff from a fishing vessel. The helicopter, operated by Heli Guam, Inc., Agana Heights, Guam, sank and is presumed destroyed. The commercial pilot suffered minor injuries and non-pilot rated observer was not…

Damage
Destroyed
Injuries
Minor
Report
LAX00LA109

From NTSB records; matched by serial number.Read NTSB report (search CAROL for LAX00LA109)

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.

ADSubjectEffectiveApplies to
2006-16-04Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Sep 7, 2006Engine (250-C20 SER)
2006-13-06Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Jul 26, 2006Engine (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.
2005-10-13Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E…Jun 22, 2005Engine (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.

Related aircraft

Show all 8 related aircraft

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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