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1968 PZL 101 Gavron (YAK 12) in fly condition
SP-KZO SN K6806204
Total Time Airframe: 4172:00
Total Time Engine: 796:00, TBO 1000:00
Total Time Prop after Factory Overhaul: 600:00 TBO 1000:00
Engine: AI 14RA , 9-Cylinder radial, 260hp
Constant Speed Propeller, Variable Pitch
Certificate: Experimental
Avionic: polish COM RS 6001 and ADF polish
Zlin and PZL Aircraft Dealers
Airpart Finow/Berlin
ICAO code EDAV
Germany
We specialize in Zlin and Wilga aircraft, overhaul, maintenance, sales.
All our aircraft are sold with complete logbooks, all legal
documents as well as maintenance manual and parts catalogue.
We have a big stock of spares, airframe/engine/accessories for
Zlin and Wilga aircraft available.
Aircraft and spare parts are shipped worldwide.
For all inquiries/detailed shipping quotes please contact us :
Headquarters in Germany : wilga@wilga35.de
US Representative : dilwilga@yahoo.com
Design and development
The PZL-101 was a development of the Jakowlew Jak-12M, manufactured in Poland under
licence from 1956. The main goal was to create an agricultural aircraft with increased useful
load. Works were carried out by a team led by Stanisław Lassota. Behind two crew seats there
was installed a container for 500 kg of chemicals, with a "hump" above a fuselage. Because a
center of gravity moved rearwards, the plane was fitted with new, swept wings, with
significant vertical end plates to improve air flow. Later, in most of the aircraft they were
removed, because they increased side surface, making landing very tricky in crosswind. Main
landing gear was also shifted rearwards, comparing with Yak-12. An equipment was
simplified and lightened to increase useful load more, eg. a right door was removed.
The first prototype flew on April 14, 1958, and the production of the PZL-101 started in
1960. From 1962 the PZL-101A variant was produced, with improved equipment, pilot's seat
raised and a right-side door added. From 1965 a further improved PZL-101B was produced.
Visible changes were: lack of "hump" above the fuselage and a bigger air intake below
engine. Apart from agricultural planes, there were made four-seater utility planes and air
ambulances. Until production end in 1968, 325 planes were manufactured, including 215
agricultural ones, 78 utility ones and 32 air ambulances.
Operational history
The main user of the PZL-101 was the Polish civilian aviation. Polish agricultural planes were
used in Poland and in services abroad (Austria, Libya, Egypt). They were mostly replaced in
this role in the late 1970s by the PZL-106 Kruk and PZL-Mielec M-18 Dromader. Air
ambulances were used in the Polish civilian aviation. Utility Gawrons were used in aero clubs
in the country, also for glider towing and parachute training (with removed right doors). In
2006 there remained 40 Gawrons in the Polish registry, including 4 private owned.
134 PZL-101s were exported, mainly to Hungary and Bulgaria, in lesser numbers to eight
other countries.
On 30 March 2007 EADS PZL "Warszawa-Okęcie" S.A. announced that will not longer
support their tasks related with flight certificates for Jak-12A, Jak-12M and PZL-101 Gawron.
Between 31 March and 28 June 2007 Polish Civil Aviation Office was temporary certificate
holder. Since 28 June PZL-101s can be used only as experimental aircraft class.[1]
Description
Metal construction braced high-wing monoplane, conventional in layout. Fuselage of a steel
frame, covered with duralumin (front) and canvas (tail). Two-spar wings, canvas covered,
fitted with slotted flaps, slats and vertical edge plates. Two-seat or four-seat cabin.
Conventional fixed landing gear with a tail wheel. In an agricultural variant there was 800litre container in a fuselage (for 500 kg of chemicals), behind front seats, with exchangeable
sets of equipment for spraying or cropdusting.
Single radial engine 9-cylinder AI-14R (cruise power 161 kW/220 hp, take-off power 191
kW/260 hp). Two-blade propeller. Two fuel tanks in wings, 90 l each.
Variants
PZL-101
First production series built between 1960 and 1962.
PZL-101A
Version with improved equipment and a right-side door added, built between 1962 and
1965.
PZL-101B
Improved version lacking of "hump" above the fuselage and with bigger air intake
below engine, built between 1965 and 1968.
Operators
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Austria received five aircraft.
Bulgaria bought 40 aircraft.
Finland received three aircraft.
Hungary bought 67 aircraft, 52 were delivered in agro variant.
India bought six aircraft.
Poland was main operator, 191 aircraft were delivered.
Spanish State bought four aircraft.
Soviet Union bought two aircraft.
Turkey bought five aircraft.
Venezuela bought one aircraft.
Vietnam bought one aircraft.
Specifications
Data from Jane's All The World's Aircraft 1965-66 [2]
General characteristics
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Crew: one
Capacity:
o 3 passengers or
o 500 kg (1,100 lb) powdered chemicals or
o 605 L (133 Imp Gal) liquid chemicals
Length: 9.00 m (29 ft 6½ in)
Wingspan: 12.68 m (41 ft 7 in)
Height: 3.12 m (10 ft 3 in)
Wing area: 23.86 m² (256.8 sq ft)
Empty weight: 1,004 kg (2,313 lb)
Max takeoff weight: 1,660 kg (3,660 lb)
Powerplant: 1× Ivchenko AI-14R air-cooled 9-cylinder radial engine, 191 kW (260
PS)
Performance
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Maximum speed: 170 km/h (86 knots, 99 mph)
Cruise speed: 130 km/h (70 knots, 81 mph)
Stall speed: 50 km/h (27 knots, 31 mph)
Range: 525 km (284 nmi, 325 mi)
Service ceiling: 3,600 m (11,800 ft)
Rate of climb: 2.4 m/s (482 ft/min)
Take-off run: 100 m
Landing run: 100 m