Turbine helicopter

N501EF

1977 Hughes 500D

Registered 1 NTSB/FAA record
Built
1977
Serial
270091D
Class
Turbine helicopter
Engines
Allison 250 SER 400HP
Status
Current as of October 2026
Registered owner
Airwest Helicopters Inc (Corporation)
Based
Redlands, CA
1977 Hughes 500D
Representative photo of a Hughes 500D. Not a photo of N501EF.
Registration record

N501EF on the FAA register

Type
1977 Hughes 500D (FAA: Hughes Helicopters HUGHES 369D)
Serial
270091D
Engines
Allison 250 SER 400HP
Registered owner
Airwest Helicopters Inc
Redlands, CA
Certificate issued
2004-09-29
Airworthiness date
1977-05-25
Registration expires
2028-04-30
Airworthiness class
Standard · normal
Mode S (hex)
A63E11
Mode S (octal)
51437021
Seats (type)
4
Weight class
up to 12,499 lb
Range (type)
232 nm
Cruise (type)
125 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2028-04-30
    Registration expires (renewal due).
  • 2009-03-07
    Accident at Trona, CA; damage: substantial.
  • 2004-09-29
    Certificate of registration issued as N501EF.
  • 1977-05-25
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N501EF

N501EF is a 1977 Hughes 500D (FAA model HUGHES 369D), serial number 270091D. The FAA register lists Airwest Helicopters Inc as the registrant in Redlands, California. The current certificate of registration was issued on September 29, 2004 and expires on April 30, 2028.

The FAA aircraft reference file describes the type as a turbine helicopter, one Allison 250 SER 400HP engine and 4 seats. Published figures for the type give a cruise speed of about 125 knots and a range of about 232 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated May 25, 1977.

N501EF has 1 accident/incident record on file (most serious damage: substantial); details are below.

Cruise
125 kt
Range
232 nm
Fuel burn
12 gph

Published figures for the Hughes 500D type. They describe the model, not this airframe's equipment or condition.

Safety record

Accident & incident history

2009-03-07 Accident · Trona, CA Damage: Substantial Minor injury NTSB · WPR09LA144
Reported aircraft: Md Helicopter 369D
Probable cause: The pilot's failure to maintain control while landing in a high density altitude environment due to a loss of tail rotor effectiveness.

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 California· 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.