Yakovlev Yak 52 — yak52_fltrep52
NOT FOR FLIGHT — source fidelity: unreviewed | operational review: none | completeness: full
Source: Yakovlev/Yak 52/yak52_fltrep52.txt
Rights: licensed
Checklist hash: 0f28b1a9f2d5130aba7a6dcd55653cced8366193b967dd41ac34fcfede2fdddb
Verify against the aircraft's own approved documentation before use.
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COCKPIT ENTRY
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[ ] Climb onto wing using knee, then other leg, while holding canopy rail
[ ] Walk only on anti-skid strip adjacent to fuselage

BEFORE START
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[ ] Check front cockpit wall chart for priming duration
[ ] Check air reservoir pressure
** NOTE: Air reservoir is good for 12 start attempts before re-charging.

ENGINE START
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[ ] Start using pneumatic system
** NOTE: Starting procedure varies with outside air temperature, time since last run, and oil dilution.
** NOTE: When warm, the Ivchenko starts with the simplicity of a typical Continental or Lycoming.

AFTER START
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[ ] Check compressor re-charges air bottle after start

TAXI
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[ ] Use rudder bars for gentle turns
[ ] Use burst of power to energize rudder when needed
[ ] For tighter turns, use full rudder plus stick-mounted brake lever for differential braking
** NOTE: With rudders neutral, braking is equal to both main wheels.
** CAUTION: Take care not to reach excessive taxi speed; allow engine temperature to stabilize.

ENGINE RUN-UP AND VITAL ACTIONS
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[ ] Magnetos check
[ ] Exercise RPM control to verify propeller governor operation
[ ] Complete pre-takeoff vital actions using checklist
** NOTE: Max power (ceaseless engine function duration) is 5 minutes.
** NOTE: Throttle-engine lag (racing capacity) is 3 seconds max.
** NOTE: Max overspeed when operating throttle rapidly is 109 per cent.
** NOTE: Maximum allowed airspeed in level flight is conditioned by avoidance of sudden spin: 130 km/h normal flight, 170 km/h inverted. Author suspects max/min are reversed.
** CAUTION: Aerobatics forbidden with less than 4.5 gallons of fuel remaining.

TAKEOFF
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[ ] Apply full throttle
[ ] Expect to push on the 'wrong' foot due to engine rotation direction
[ ] Rotate ............................................. 120 km/h (65 kt)
** NOTE: Take-off roll in ISA conditions is 590 ft at maximum weight.

AFTER TAKEOFF
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[ ] Raise gear .................................. BELOW 200 km/h (108 kt)
[ ] After selecting gear up, hold lever until 'three reds', then return lever to neutral

CIRCUIT AND APPROACH
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[ ] Lower gear ..................................... AT 200 km/h (108 kt)
[ ] After selecting gear down, hold lever until 'three greens', then return lever to neutral
[ ] Extend flaps ........................... AT/OR BELOW 170 km/h (92 kt)
[ ] Fly approach ... 170 km/h (92 kt) slowing to 120 km/h (65 kt) at threshold
** NOTE: Without flaps, forward view from rear seat is virtually nil; a curved approach is needed.

LANDING
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[ ] Keep the canopy lock pin in place in the rail hole
[ ] Lower nose after touchdown
** NOTE: High wing-loading means no tendency to float.
** NOTE: With practice, landing roll can be as short as 300 m (985 ft).

FORCED LANDING
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[ ] Leave gear retracted for dead-stick landing
** NOTE: Standard drill is to leave gear retracted to flatten the descent profile.
** NOTE: Brakes remain usable with gear up.
** NOTE: With gear up, the undercarriage remains partially exposed to minimize damage in a wheels-up landing.

REFERENCE
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** NOTE: Performance: climb to 3,000 ft in 98 seconds; cruise 140-145 kt at 75 per cent power; fuel burn just over 13 US gal/hr at 140 kt cruise.
** NOTE: Endurance in excess of 2 hours with 45 minutes reserve; maximum range 275 nm at slightly reduced cruise speed.
** NOTE: G limits: unlimited aerobatics certified at max takeoff weight 1,305 kg.
** NOTE: Engine: Ivchenko M-14P 9-cylinder radial, 360 hp.
** NOTE: Pneumatic system used for engine starting, flaps, gear, and brakes.
** NOTE: RPM gauge is calibrated in percent of maximum rather than RPM.
** NOTE: Artificial horizon is inverted in presentation: top half of ball is brown, bottom half is blue.
** NOTE: Rear cockpit has controls to deliberately fail certain systems in the front cockpit.
** NOTE: Gear lever is pneumatic and returns to central neutral position when not required.
** NOTE: Brakes are operated by a stick-mounted lever; pneumatic brake noise resembles a bus/lorry stopping.