The P.136 was flown for the first time on 29 August 1948 and he first production aircraft were powered by 215 hp Franklin 6A8-215-B9F engines. Eighteen of these were acquired by the Italian Air Force followed by a further fifteen of the P.136-L powered by Lycoming engines.
More than 80 P.136 five-seat light amphibians were built as one of the company’s first post-war products, 33 of which were supplied to the Italian Air Force for use as flying-boat trainers and for air-sea rescue duties.
A second production series, the P.136-L, differed in having higher-power Lycoming engines and redesigned, enlarged squared-off tail surfaces.
A total of 32 were delivered to non-military customers, including twenty to the USA where they were marketed as the Trecker Gull. Most of these were P.136-L-1 or P.136-L-2.
Trecker Aircraft Corp, a division of Kearney & Trecker Corporation, in early/mid-1960s assembled at Milwaukee, Wisconsin, Piaggio P.136L-1 s and L-2s under names Trecker Gull and Super Gull.
P.136
Engine: 215 hp Franklin 6A8-215-B9F
P.136-L
Engine: 2 x Lycoming GO-435-C2
Wingspan: 44 ft 4.75 in
Wing area: 268 sq.ft
Length: 35 ft 5 in
Height: 11 ft 6 in
Empty weight: 3211 lb
Loaded weight: 5842 lb
Max speed: 181 mph
Cruise: 160 mph at 6890 ft
Time to 3280ft: 3 min 40 sec
Service ceiling: 17,716 ft
Normal range: 373 mi
Max range: 621 mi
P.136-L-1
Engines: 2 x 270 hp Lycoming GO-480-B
Wingspan: 44 ft 4.5 in / 13.53 m
Length: 35 ft 4 in / 10.8 m
Height: 12 ft 7 in / 3.83 m
Wing area: 270.2 sq.ft / 25.1 sq.m
Empty weight: 4400 lb
Loaded weight: 5996 lb
Max speed: 183 mph at SL
Cruise 70%: 167 mph
Service ceiling: 19,685 ft
Max range: 1056 mi
P.136-L-2
Engines: 2 x 340 hp / 254kW Lycoming GSO-480
Wingspan: 44 ft 4.5 in / 13.53 m
Length: 35 ft 4 in / 10.8 m
Height: 12 ft 7 in / 3.83 m
Wing area: 270.2 sq.ft / 25.1 sq.m
Empty weight: 4652 lb / 2110 kg
Loaded weight: 6600 lb / 2995 kg
Max speed: 208 mph / 335 km/h at SL
Cruise 70%: 190 mph
Service ceiling: 25,500 ft / 7800 m
Max range: 900 mi / 1450 km
All Aero 