If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user


GRUMMAN G73T Turbo Mallard

From SKYbrary Wiki

Name G73T Turbo Mallard
Manufacturer GRUMMAN
Body Narrow
Wing Fixed Wing
Position High wing
Tail T-tail
Type code A2T
Engine Turboprop
Engine count Multi
Position (Front) Wing leading mounted
Landing gear Amphibian
Mass group 3

Manufacturered as:

FRAKES Turbo Mallard
FRAKES G-73T Turbo Mallard
GRUMMAN G-73T Turbo Mallard
GRUMMAN Turbo Mallard

GRUMMAN G73T Turbo Mallard

GRUMMAN G73T Turbo Mallard


The Grumman G-73 "Mallard" is a large, twin engine amphibious aircraft. Many have been modified by replacing the original Pratt & Whitney Wasp H radial engines with modern turboprop engines. Manufactured from 1946 to 1951.

Technical Data

Wing span 20.3 m66.601 ft
Length 14.7 m48.228 ft
Height 5.72 m18.766 ft
Powerplant 2 × Pratt & Whitney PT6A-34, 600 hp each.
Engine model Pratt & Whitney Canada PT6

Performance Data

Take-Off Initial Climb
(to 5000 ft)
Initial Climb
(to FL150)
Initial Climb
(to FL240)
MACH Climb Cruise Initial Descent
(to FL240)
(to FL100)
Descent (FL100
& below)
V2 (IAS) kts IAS kts IAS kts IAS kts MACH TAS 187 kts MACH IAS kts IAS kts Vapp (IAS) kts
Distance m ROC ft/min ROC ft/min ROC ft/min ROC ft/min MACH ROD ft/min ROD ft/min MCS kts Distance m
MTOW 63506,350 kg
6.35 tonnes
Ceiling FL245 ROD ft/min APC
WTC Range 14001,400 nm
2,592,800 m
2,592.8 km
8,506,561.686 ft

Accidents & Serious Incidents involving G73T