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Maule M-4 Jetasen / Rocket / Astro-Rocket / Strata-Rocket
Servicios Aereas De America Sa Cuauhtemoc M-1


maulem4


The first Maule production model, known as the Jetasen M-4 was delivered in April 1962, constructed in Moutrie, Georgia. Originally designed as a homebuilt in the USA in the late 1950’s, it was developed until it has become a commercially-built aeroplane.

The Maule is a four seat, high wing, tail wheel monoplane, designed to operate in and out of confined airstrips. The excellent short field perform-ance is obtained by the unusually high-lift capability flaps and the thick high-lift aerofoil of the wing. The welded steel-tube fuselage is covered with fiberglass, and the shortspan wing is all-metal with a thick, high-lift airfoil. The airplane accomplishes its short-field performance with two-position flaps of an unusually high-lift capability and without the elaborate spoilers, slots, and other items normally associated with STOL design.

The fuselage is fairly wide giv-ing a cabin dimension of 3 ft 6 ins which comfortably accommodates two adults in side-by-side seating. There is a door either side for the two front seats, as well as one on the starboard side for the rear seats. The baggage locker has its own door but this cannot be opened without the rear door being opened as well. The all-metal wings have down swept tips, strengthened centre-section so that floats can be fitted; other optional extras also fitted include a top and bottom strobe light and a glider tow hook. The tailplane is covered in a form of fibre-glassed linen that is virtually rot-proof. The fuel is contained in two, 18 Imp.G tanks in the inboard section of each wing.

The original M-4 was powered by a 145-hp O-300 Continental engine, and in 1965, the Rocket entered production with a 210-hp Continental powerplant and a constant-speed propeller. The Astro-Rocket was a deluxe version of the Jetasen, housing a 180-hp Franklin. In 1967, the Strata-Rocket was introduced into the line. Basically similar to the Rocket, it was powered by a 220-hp Franklin. All aircraft mentioned shared the same M-4 designation.

In the 1960s Servicios Aereas De America Sa serviced and repaired aircraft and engines, but undertook license-manufacture of a higher-powered Maule M-4, developed specially for Mexican conditions and called Cuauhtemoc M-1.

M-4 Jetasen
Engine 145-hp O-300 Continental
Gross wt. 2,100 lb
Empty wt. 1,100 lb
Fuel capacity 42 USG
Top speed 157 mph
Stall 40 mph
Initial climb rate 700 fpm
Ceiling 12,000 ft
Range 750 miles
Takeoff distance (50') 585 ft
Landing distance (50') 600 ft
Seats 4

M-4 Rocket
Engine 210-hp IO-360 Continental
Gross wt. 2,100 lb
Empty wt. 1,190 lb
Fuel capacity 42 USG
Top speed 170 mph
Cruise mph 165
Stall 40 mph
Initial climb rate 1,250 fpm
Range 680 miles
Ceiling 18,000 ft
Takeoff distance (50') 585 ft
Landing distance (50') 600 ft
Seats 4

M-4-145
Gear: conv. oleo
Produced: 1962-66
Engine: Cont O-300, 145 hp
TBO: 1800 hr
Prop: F/P
Wingspan: 29'10"
Wingtip: Round

M-4-145C
Gear: conv. oleo
Produced: 1966
Engine: Cont O-300, 145 hp
TBO: 1800 hr
Prop: F/P
Wingspan: 29'10"
Wingtip: Round

M-4-180C
Gear: conv. oleo
Produced: 1970-71
Engine: Franklin O-335, 180 hp
TBO: 2000 hr
Prop: C/S
Wingspan: 30'10"
Wingtip: Droop

M-4-210
Gear: conv. oleo
Produced: 1965
Engine: Cont IO-360, 210 hp
TBO: 1500 hr
Prop: C/S
Wingspan: 30'10"
Wingtip: Droop

M4-210C
Engine: Continental IO-360, 210 hp
TBO: 1500 hr
Prop: CS
Wing span: 30 ft 10 in
Length: 22 ft 9 in
Empty wt: 1300 lb
Max wt: 2300 lb
Prop: McCauley CS
Fuel cap: 36 Imp.G
Cruise 75% pwr: 125 kt
Undercarriage: Oleo / tail wheel
Wingtips: Drooped
Produced: 1965-73

M-4-220C

Gear: conv. oleo
Produced: 1967-73
Engine: Franklin O-350, 220 hp
TBO: 1500 hr
Prop: C/S
Wingspan: 30'10"
Wingtip: Droop

 

 

 


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