| Manufacturer |
Glenn L. Martin Company |
Handley Page |
| Description |
The Martin 4-0-4 is a pressurized, all-metal, low-wing 40 passenger American airliner built by the Glenn L. |
The Handley Page HPR.7 Dart Herald is a British turboprop passenger aircraft, designed in the 1950s as a DC-3 replacement, but only entering service in the 1960s by which time it faced stiff competition from Fokker (F27 Friendship) and Avro (Avro/Hawker Siddeley HS748). |
| ICAO Code |
M404 |
|
| First Flight |
1950-10-21 |
1955-08-25 |
| Entry Into service |
1951-01-01 |
|
| Production End |
1953-01-01 |
1968-01-01 |
| Service End |
|
1987-01-01 |
| Designer |
Glenn L. Martin Company |
Handley Page |
| Type |
Short/medium range airliner |
Turboprop airliner |
| Length (m) |
22.5552 |
22.86 |
| Height (m) |
8.5344 |
7.3152 |
| Cockpit Crew |
3 |
2 |
| Max Seating |
40 |
56 |
| Max Speed (km/h) |
502.1153 |
|
| Cruise Speed (km/h) |
450.6163 |
442.6276 |
| Min Speed (km/h) |
130.3569 |
120.3799 |
| Max Ceiling (m) |
8839.2 |
8503.92 |
| Rate of Climb (m/s) |
9.6774 |
9.1694 |
| Capacity Description |
40 passengers |
50-56 passengers, 11700 lb maximum payload |
| National Origin |
Canada |
United Kingdom |
| Number Built |
103 |
50 |
| Powerplant Description |
2 × Pratt & Whitney R-2800 Double Wasp-CB16 18-cylinder two-row air-cooled radial engine, 1790 kW (2400 hp) each |
2 × Rolls-Royce RDa.7 Dart Mk.527 turboprop engines, 1570 kW (2105 hp) each |
| Primary Users |
Eastern Air Lines, Trans World Airlines |
|
| Status |
|
Retired |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/Martin_4-0-4 |
en.wikipedia.org/wiki/Handley_Page_Dart_Herald |
| Flat Wing Span (m) |
28.3464 |
28.6512 |
| Flat Wing Area (m²) |
80.2682 |
82.3121 |
| Wake Category |
M |
|
| Aircraft Engine |
Pratt & Whitney R-2800 Double Wasp |
|
| Number of Engines |
2 |
2 |