Hughes 500

Image: U.S. Army (Public Domain)

Hughes 500

Designation: OH-6 Cayuse / Hughes 500 / MD 500

Hughes Helicopters Cold War helicopter 1963-present

Why it matters

In Vietnam, the OH-6 'Loach' flew low and slow on reconnaissance missions, finding the enemy so Cobras could kill them. Pilots loved its agility; it could turn inside anything. The civilian 500 became ubiquitous — police departments, news stations, tour operators, and Hollywood all adopted it. But for a generation of TV viewers, one specific 500D in Island Hoppers livery defined the type: TC's helicopter in Magnum, P.I. That red, white, and yellow bird made the Hughes 500 an icon.

Specifications

Max Speed 175 mph
Range 260 miles
Service Ceiling 15,800 ft
Engine Allison 250-C20B turboshaft
Power/Thrust 420 shp
Length 30 ft 10 in
Crew 1
Production 4,700+ built (all variants)
First Flight 1963-02-27
Service Dates 1966-present

Notable Features

  • Compact egg-shaped fuselage
  • Five-blade main rotor
  • T-tail with canted stabilizer
  • Exceptional maneuverability
  • Distinctive turbine whine

Patina notes

Working 500s show their hours in subtle ways. The distinctive teardrop shape develops minor dents from hangar rash. Skid tubes wear from countless landings. Sun-faded paint on the horizontal stabilizer. The Plexiglas chin bubble scratches over time. Vietnam-era Loaches that survive are treasured — their combat damage often left visible as a badge of honor.

Preservation reality

The 500/MD 500 series remains in production under MD Helicopters. Thousands fly worldwide in civilian roles. Military OH-6 Cayuses are museum pieces now — the Army Aviation Museum has examples, as do private collections. Vietnam-era Loaches with provenance are valuable. Civilian 500s are affordable enough that the type will be preserved simply through continued use.

Where to see one

  • • U.S. Army Aviation Museum (Fort Novosel)
  • • National Air and Space Museum
  • • Hiller Aviation Museum
  • • Various police aviation units

Preservation organizations

  • • MD Helicopters Owners Association
  • • Vietnam Helicopter Pilots Association

Sources