# Yakovlev Yak-11 — yak11_fltrep11-1 # NOT FOR FLIGHT — source fidelity: unreviewed | operational review: none | completeness: full # Source: Yakovlev/Yak-11/yak11_fltrep11-1.txt # Rights: licensed # Checklist hash: 3479738908971f74e4c208d0d8aa670d155ada7ae636cc9874494e3b6d895947 # Verify against the aircraft's own approved documentation before use. section_id phase criticality section_title item_index item_id type tickable memory_item indent text response condition detail reference normal General Description 0 note no no 0 The C11 cuts an impressive figure parked alongside the Cherokees and Cessna's on a typical flight line. reference normal General Description 1 note no no 0 The construction is a mixture of steel tubing and metal skinning for the forward fuselage, with fabric covering aft of the mainplane. The wings and tail surfaces are skinned in metal and the ailerons, rudder and elevator panels revert to fabric. reference normal General Description 2 note no no 0 The Yak sits on a wide-tracked, inwardly-retracting undercarriage and a small, non-retracting tailwheel. reference normal General Description 3 note no no 0 The brakes have been modified from the standard pneumatic drums to a set of hydraulic Cleveland discs which originated in a Cessna 421. reference normal General Description 4 note no no 0 The Yak 11's 700 horse power, seven cylinder ASH 21 radial is hidden behind a tight fitting cowling with a cooling gill arrangement. reference normal General Description 5 note no no 0 Access to the cockpit is easy — simply climb up the trailing edge of the wing and push in the knob at the front bottom corner of the forward or aft canopy. reference normal General Description 6 note no no 0 Cyrillic script makes everything alien to a westerner, although CAA-approved labels take care of the important bits. before_start normal Canopy and Cockpit 0 caution no no 0 Do not reach for the toggle above your head to close the canopy — all that will do is release the canopy's securing pins and allow the whole caboodle to fall off the back of the fuselage. before_start normal Canopy and Cockpit 1 action yes no 0 Close canopy using the little knob at the forward corner and make sure that it is fully home before takeoff FULLY HOME before_start normal Canopy and Cockpit 2 note no no 0 The canopies are allowed to be opened in flight. engine_start normal Engine Starting 0 challenge yes no 0 If the aeroplane has been left standing for a few hours, pull through to clear the bottom cylinders of oil engine_start normal Engine Starting 1 action yes no 0 Charge internal priming cylinder with fuel using the lever on the lower right of the cockpit CHARGED engine_start normal Engine Starting 2 action yes no 0 Press firing button on the left of the instrument panel PRESS taxi normal Taxying 0 note no no 0 The aeroplane feels heavy on the ground but the toe brakes fitted make steering easier. before_takeoff normal Power Checks and Pre Take-Off Drills 0 action yes no 0 Cowl flaps OPEN takeoff normal Takeoff 0 action yes no 0 Line up and allow aircraft to run forwards a few feet with aft stick to engage automatic tailwheel lock ENGAGED takeoff normal Takeoff 1 action yes no 0 Check Ts and Ps before rotation CHECK takeoff normal Takeoff 2 action yes no 0 Rotate with a firm pull on the stick at 90 knots ROTATE after_takeoff normal After Takeoff 0 action yes no 0 Raise the gear UP after_takeoff normal After Takeoff 1 action yes no 0 Bring the power back to 75% with the throttle and rpm lever 75% climb normal Climb 0 action yes no 0 Climb at 135 knots 135 KT climb normal Climb 1 note no no 0 The VSI will show 1,600fpm at max weight and max power. cruise normal Cruise 0 note no no 0 With the throttle left wide open the C11 records 225kt TAS at 1,000 feet, for a fuel burn of 50 gallons per hour. cruise normal Cruise 1 note no no 0 At 75% power the speed and fuel burn drops to 200 knots and 33gph. cruise normal Cruise 2 note no no 0 The aeroplane becomes frugal at 140 knots, using just 16gph. approach normal Approach and Circuit Notes 0 note no no 0 The Yak C11 is typically difficult to slow down and it takes a while to get the airspeed low enough to meet the gear and flap limits of 163 and 135 knots respectively. approach normal Approach and Circuit Notes 1 note no no 0 The best approach to make is a curved one as the visibility over the nose is poor — non-existent from the rear seat. landing normal Landing 0 note no no 0 The landing flare needs to be positive but, once on the ground, the aeroplane stays put. landing normal Landing 1 action yes no 0 Bring stick back to prevent a noseover before any large brake pressure is applied AFT reference normal Yak 11 Specifications 0 note no no 0 Vne: 323kt reference normal Yak 11 Specifications 1 note no no 0 70%: 195kt reference normal Yak 11 Specifications 2 note no no 0 Stall: 83kt reference normal Yak 11 Specifications 3 note no no 0 Wing span: 9.53 metres reference normal Yak 11 Specifications 4 note no no 0 Length: 8.56 metres reference normal Yak 11 Specifications 5 note no no 0 Max t/o weight: 2,150kg reference normal Yak 11 Specifications 6 note no no 0 t/o run: 575 metres reference normal Yak 11 Specifications 7 note no no 0 Engine: Ash 21, 700hp