Two YAK 52 check
lists here, copy and edit as required. These are supplied as reference only and may contain errors.
YAK 52 CHECK LIST
Solo from front seat only
| PREFLIGHT
Configure cockpits REAR Mag Control UP (1st cabin) Gear NEUTRAL Flaps NEUTRAL Intsr. Switches DOWN Mags 1+2 Brake Override OFF Parachute Removed Straps Tied and Secure Canopy Closed and Locked
FRONT Mags OFF (0) Starter Guard in place All Switches OFF Gear DOWN & Latched Brakes ON Main air supply ON Check seatbelts
EXTERNAL Prop alignment marks “0” Prop Area clear Cowl Shutters Fuselage Oil Leaks Gear Struts Cowl Latches Pitot cover OFF Static Ports Flaps Drain Fuel Control Surfaces Oil Cooler Cover Fuel quantity Oil Quantity, min 9 lts
|
ENTERING COCKPIT
Seatbelts secure Headset connected Rudder pedals adjusted Canopy free Controls free Trim free Clock wind and set
STARTING
Air supply Re-check ON Cooling controls OPEN Throttle slightly open Fuel supply ON-never turn of Carb heat OFF Master switch ON Generator ON Ignition ON Engine Instruments ON Enunciator lights ON Primer LEFT and pump for fuel pressure Primer right and prime as req’d-engine temp dependant Press starter Mags to BOTH (1+2) Prime as req’d then lock Warm up at 40% Electrical systems as req’d
WARM UP
Monitor temps and Pressures Set cooling controls as required Switch on and test avionics
|
BEFORE TAKEOFF
Mag check at 70% RPM 3% max drop. Exercise Prop Check primer locked, central Throttle Friction SET TRIM set for takeoff Mags – Both (1+2) Prop MAX RPM Flaps UP Check Engine gauges Align Gyros Canopy as req’d Seatbelts tight Transponder to ALT TAKEOFF
Apply FULL power Lift nosewheel JUST clear of the ground @ 90KPH Climb at 170 KPH Gear UP Power to 82%, 80 cms BEFORE LANDING
Power to 70% & 40 cms Abeam touchdown area, GEAR DOWN, check lights and poles
AFTER LANDING Taxy clear of runway and STOP FLAPS Identify and raise Cool engine to 150 CHT Switch off mag’s Switch of electric’s Close air cock. |
FLIGHT REFERENCE CARDS
Yakovlev YAK-52
NORMAL DRILLS
©Aerobuild Ltd
Prepared by Freestone Aviation
Gamlingay, Cambridgeshire
NOTES TO USERS
These Flight Reference Cards are complimentary to the Yakovlev Yak-52 Flight Manual (AB/FA/52 Issue 2). Throughout this publication the following conventions apply:-
a) Words in capital letters indicate the actual markings on the controls concerned.
b) Unless otherwise stated, all airspeeds quoted are indicated.
c) Heights given are imperial with metric conversions in brackets to cater for either altimeter type fitted.
LIST OF EFFECTIVE CARDS
WARNING
Whilst every effort has been made to ensure accuracy of transcription and content, no responsibility can be accepted for any errors howsoever caused, nor for any subsequent loss or injury arising from such errors. Reliance placed upon the contents of these cards is at the user’s own risk.
EXTERNAL CHECKS
General position Clear of other aircraft
Wheels chocked (if required)
Room to taxy
AT THE COCKPIT
Magnetos OFF
Flying controls Locks removed
Air pressure 50kgf/cm² min both
NOTE: If normal system air pressure is low ie 20 kgf/cm² or more, a start may be attempted and the pressure built up on the compressor before taxy. Otherwise, the system must be charged via the external connector, as must the emergency system.
PORT MAINPLANE
Upper surface Condition
Flap Condition
Aileron Condition, lock removed freedom of movement hinges and push rod secure, drain holes clear
Leading edge & under surface Condition
Pressure head Cover removed, security and cleanliness
Stall warner (if fitted) Freedom of movement
Fuel tank cap andSecurity, Visual Contents check cover plate
Access panels Security
PORT UNDERCARRIAGE
General Condition and security
Oleo extension 205mm
Wheel Tyre for cuts and creep
Tyre pressure 3-3.5 bar (40-45 psi in USA)
FRONT FUSELAGE AND ENGINE
Air system water trap Drain, ensure shut
Cowlings Condition and security
Gills Condition and security
Propeller Condition and security, check prop alignment marks, no leaks, hub split pin in place.
NOTE: If the engine is cold or for the first run of the day turn the engine by hand through at least nine blades to check for hydraulic locking. If a quantity of oil drains from the exhaust, pull through 36 blades before attempting to start the engine.
Exhaust pipes Condition and security
Carb air inlet Condition and security
Oil tank Visual contents check, cap and dipstick secure. Litres:- 8 min;10 aeros;16 max
NOSE UNDERCARRIAGE
General Condition and security
Oleo extension 131mm
Wheel Tyre for cuts & creep
Tyre pressure 3 – 3.5 bar(40-45psi in USA)
STARBOARD UNDERCARRIAGE
General Condition and security
Oleo extension 205mm
Wheel Tyre for cuts and creep
Tyre pressure 3 – 3.5 bar(40-45psi in USA)
STARBOARD MAINPLANE
Upper surface Condition
Flap Condition
Aileron Condition, lock removed freedom of movement hinges and push rod secure, drain holes clear.
Leading edge and Condition of under surface
Oil cooler Condition, matrix clean. Winter baffle plate secure
Fuel tank cap andSecurity, visual contents check cover plate
Access panels Security
EXTERNAL CHECKS (cont’d)
STARBOARD FUSELAGE
General Condition
Aerial Condition and security
TAIL UNIT
General Condition
Rudder Freedom of movement hinges and cables secure
Elevators Freedom of movement hinges and cables secure
Trim tab Condition and security
PORT FUSELAGE
General Condition
Gnd Pwr socket cover Secure if not used
Pneu charge coverSecurity
COCKPIT
Glazing Condition, ensure clean
INTERNAL CHECKS
REAR COCKPIT
Ensure no loose articles
Flap selector Neutral
Magnetos 1 + 2 (ON) see note
U/C selector Neutral, safety gate in
Ignition control switchCabin 1 (UP)
Starter button Shielded
Fault simulation switches OFF
Harness Secure if solo
Canopy Close and lock if solo
NOTE: The rear magneto switch should remain OFF until priming has been completed but must placed to 1+2 (ON) before attempting to start. On British registered aircraft the flap and undercarriage selectors in the rear cockpit are locked in Neutral.
PRE-START
Air On, 50kgf/cm² min both
Brakes On, parking catch engaged
Primer As required (see note)
Battery Master (or External ON, check 24V
power of required)
Generator switch ON, check gen fail light on
Ignition switch ON
U/C indication ON, check 3 greens
Engine instruments switch ON
Lamp test Operate, check lights
Fuel gauge Check readings, test lights
Radio As required
Intercom As required
Throttle Set 2 open
Starter Operate (3-5 secs)
Magnetos 1+2 (on) after 3-5 blades
NOTE: Priming; Cold = 8 pumps set to CYL with the propeller pulled through one blade per pump.
2 pumps set to CARB
Hot = Up to 4 pumps on CYL.
A warm engine must not be pulled through
All pulling through must be in the direction of rotation.
POST START
Throttle 38-41%
Oil pressure 1 kgf/cm² within 20 secs
Primer Secure in neutral
Throttle 41-44% until oil temp rise
41-48% for warm up.
The engine is considered sufficiently warm when the oil temperature = 40ºC and CHT = 120ºC.
External power (if used) Disconnect, master sw ON
Radio ON, tune, vol/sq adjusted
Intercom ON
LH switch bank All ON
DI Light out, compare to S’by compass
Instruments Check
Controls Full and free movement
Radio call As reqd; set QFE/QNH
INTERNAL CHECKS (cont’d)
FRONT COCKPIT
Ensure no loose articles
Rudder pedals Adjusted, feet in stirrups
Parachute (if worn) Adjusted and secure
Harness Adjusted and secure
Canopy As required
LH switch bank All OFF
Flap selector UP (Neutral if air press. low)
Trim Neutral
Throttle friction As required
Throttle Full and free operation, set closed.
Propeller control Set max rpm (fwd)
Fire cock/Fuel cock Full and free operation, set open (fwd)
Magnetos OFF
U/C selector DOWN, safety gate in
Instruments Condition, readings, art. AI. start knob pressed
Emergency air valve Ensure closed
Carb heat Full and free operation set cold (fwd)
RH friction lever As required
Oil cooler control Full and free operation, set CLOSED (rear)
Cowling gills control Full and free operation, set CLOSED (rear)
Inst. panel switch bank All OFF
Cabin heater control COLD
Headset/helmet Plug in, loose cable secure
Accelerometer Reset
TAXYING
Ensure all clear around aircraft
Chocks Removed
Brakes Test
Instruments Test whilst taxying
POWER CHECKS
Clear area selected
Parking brake ON
Ts and Ps Check
Cowl flaps Open fully
Oil cooler shutter As required
Throttle 58%
Generator Test, voltage check 27-29V,
warning light out
Propeller Fully fine
Throttle 70%, Brakes holding
Magnetos Test, max drop 3%
Carb heat Test
Propeller Coarse, rpm drop to 53%
Fine, rpm recovery
Repeat 3 times
Throttle Idle – 28-32% (max 5 mins)42-47%
PRE TAKE OFF
T-Trim Neutral
T-Throttle Adjust friction
Propeller Fully fine
Oil cooler As required
M-Magnetos ON
M-Master switch ON
P-Pitot heat As required
P-Primer Neutral
F-Fuel On, sufficient for flight
F-Flaps UP
G-Gauges Checked and set, gyros,
altimeter, Ts and Ps
G-Gills Open
H-Hatches Closed and locked
H-Harness Secure
C-Carb heat Cold
C-Controls Full and free movement
TAKE OFF
Throttle Fully OPEN
Check manifold pressure,
Ts and Ps, airspeed rising
Rotate 90km/h (49kt)
Lift off 110km/h (60kt)
Climb 160 km/h (86kt)
AFTER TAKE OFF
Undercarriage Retract by 200km/h (108 kt)
Engine Set climb power ‘Nominal 1’
Ts and Ps
Radio Set, clearances as required
Altimeter QFE or QNH as required
IN-FLIGHT CHECKS
Pre Stalling, Spinning, Aerobatic checks (HASELL)
H- Height Sufficient to recover by
3000ft (900M) AGL
A-Airframe Flaps and landing gear UP
S-Security Hatches closed and locked,
Harnesses secure, no loose articles
E-Engine Ts and Ps, fuel, carb heat, throttle and pitch as required
L-Location Clear of controlled airspace cloud and built-up areas
L-Lookout Clearing turn
EN ROUTE/RE-JOIN CHECKS (FREDA)
F-Fuel ON and sufficient, diversion airfield selected
R-Radio ON, frequency and volume set, call as required
E-Engine Ts and Ps, carb heat
D-DI Check, instrument service-ability, sync. light out
A-Altimeter QFE/QNH as required
PRE LANDING CHECKS (DOWNWIND)
B-Brakes OFF
U-U/C (below 200km/h) DOWN – 3 greens and mechanical indication
F-Fuel ON, sufficient for go-around
F-Flaps (below 170km/h) As required
P-Pitch Fine
I-Instruments Ts and Ps, altimeter set
C-Carb heat Checked, then COLD
H-Hatches As required
H-Harness Secure
FINALS
P-Pitch Fine
U-U/C DOWN, 3 greens and mechanical indication
F-Flaps DOWN (Vfe 170km/h/92kt)
A-Altimeter Setting
GO-AROUND
Throttle OPEN fully
P-Pitch Fine
U-U/C UP
F-Flaps Retract by 170m/h (92kt)
A-Altimeter Setting
POST LANDING
Vacate active runway and stop
Carb heat COLD
Flaps UP
Trim NEUTRAL
Friction As required
Electrics Non essential OFF
SHUT DOWN
Position As req. nosewheel straight
Parking brake ON
Radio OFF
Electrics Non essential OFF
Cowl flaps OPEN
Oil shutter As required
Throttle 28-34% until
CHT = 140-150ºC
65-68% for 20-30 sec
28-34% for 15 sec
Magnetos OFF
All switches OFF
Air Off (clockwise)
Cowl flaps CLOSED
Oil shutter CLOSED
Vacate aircraft, fitting control locks as appropriate. Drain the air system water trap after each flight. If a/c is to be left overnight, consider fitting covers.
LIMITATIONS
MAXIMUM HEIGHT
As no oxygen system is fitted, the aircraft is limited to a maximum height of 10,000ft.
MAXIMUM SPEED
Vne 420km/h (226kt)
Manoeuvring 360km/h (194kt)
Level flight 300km/h (162kt)
Canopy open 250km/h (135kt)
Landing gear extended 200km/h (108kt)
Flaps extended 170km/h (91kt)
STALLING SPEEDS
Normal 105km/h (57kt)
Inverted 140km/h (76kt)
Flaps extended 100km/h (54kt)
MAXIMUM WEIGHT
Maximum weight for all flight regimes 1315kg (2899 lb)
AEROBATICS
All aerobatic manoeuvres are permitted. Aerobatics are not to be attempted with landing gear or flaps extended. Both canopies must be closed and locked.
LOAD FACTORS
Max positive +7.0g
Max negative -5.0g
INVERTED FLIGHT
2 minutes maximum with 3 minutes erect before next period of inverted flight.
CROSSWIND
Maximum crosswind component 6m/sec (12kt)
ENGINE LIMITATIONS
Take-off power is limited to a maximum of 5 minutes
Maximum RPM is limited to a maximum of 1 minute
OIL TEMPERATURE
Minimum 40ºC
Normal 50-65ºC
Maximum 75ºC max continuous
85ºC full power
OIL PRESSURE
Minimum 1.0kgf/cm²
Normal 4.6kgf/cm²
FUEL PRESSURE
Minimum 0.15kgf/cm²
Normal 0.2-0.5kgf/cm²
CYLINDER HEAD TEMPERATURE
Minimum 120ºC
Normal 140-190ºC
Maximum 240ºC
CARBURETTOR INTAKE TEMPERATURE
Ideal range 10-45ºC
MAXIMUM ENDURANCE
Maximum flight range at a height of 1640ft (500m) and an airspeed of 210-215km/h (113-116kt) at 1315kg AUW (119 litres fuel) with 10% unusable fuel supply in ‘Cruise 2’ engine running condition is 510km (275nm). In this case the flight duration is approximately 2 hours 45 minutes
YAKOLEV YAK-52
EMERGENCIES
CARD 8 (REAR)
ENGINE FIRE IN THE AIR
ENGINE FIRE ON THE GROUND
COCKPIT/ELECTRICAL FIRE
AIRFRAME FIRE
CARD 9 (FRONT)
ENGINE FAILURE ON TAKE OFF
ENGINE FAILURE IN FLIGHT
ABANDONING
CARD 9 (REAR)
DITCHING
RADIO FAILURE
ELECTRICAL OVERLOAD
PROPELLER OVERSPEED
HIGH OIL PRESSURE
LOW FUEL PRESSURE
CARD 10 (FRONT)
ROUGH RUNNING
AIRBORNE RE-START
UNDERCARRIAGE FAILURE
FLAP FAILURE
BORINGS IN OIL
ENGINE FIRE
Note: No engine fire extinguisher is fitted
Throttle CLOSED
Fuel cock OFF
Airspeed/r.p.m Reduce by raising nose
Magnetos OFF when engine cuts
Sideslip to try to keep flames away from the cockpit.
ENGINE FIRE ON THE GROUND
Throttle CLOSED
Magnetos OFF
Fuel cock OFF
Parking brake Release to enable the aircraft to Be pushed away from burning fuel the ground.
COCKPIT/ELECTRICAL FIRE
If fire/smoke has occurred shortly after an electrical switch has been moved: Reselect the particular switch to former position.
If fire/smoke persists: All non essential electrics OFF.
If visible signs of fire: Land as soon as possible or, if parachutes are worn, abandon the aircraft.
AIRFRAME FIRE
Dive the aircraft and sideslip to keep the flames away from the cockpit.
Put the Master switch to OFF.
If the fire goes out land as soon as possible at the nearest airfield; be prepared for a higher stalling speed if the aircraft skin is damaged.
If the fire persists, land as soon as possible or, if parachutes are worn, abandon the aircraft.
ENGINE FAILURE ON TAKE-OFF
Fuel cock Check ON and quantity
Carburettor air Hot
Magnetos Both ON
Engine Check indications
If possible maintain a speed of not less than 160km/h and lower the flaps as required. If time permits before landing, turn off the fuel and switch off the ignition. Tighten the harness and open the canopy.
ENGINE FAILURE IN FLIGHT
Proceed as for engine failure on take-off.
The best gliding speed is 160km/h with the flaps up.
Fuel OFF
Magnetos OFF
Harness Tight
Make the initial approach at 160km/h with flaps up; open the canopy at 50m. Lower the flaps only when certain of getting into the selected landing area, and aim to cross the boundary at 160km/h with full flap or with flaps up. At low speeds the rate of descent is very high.
ABANDONING
Throttle SHUT
Fuel cock OFF
Magnetos OFF
Airspeed 110-120km/h
Flaps UP
Canopy Open
Mic/Tel leads Disconnect
Seat Harness Release. Ensure parachute harness not released.
The pilot should bale out first, the rear seat occupant following once the pilot is clear of the aircraft. When baling out, endeavour to dive downwards and away from the aircraft to try to avoid hitting the tailplane. The aeroplane may be abandoned to either side or inverted.
DITCHING
No ditching experience has been obtained for this aircraft, but the following is a general guide.
Harness Tight
Canopy Shut
Undercarriage UP
Approach Normal
Touch down Tail first at as low an air speed as possible.
RADIO FAILURE
Frequency Correct frequency selected
Volume Maximum
Squelch Set
Mic/Tec plug Securely inserted
ELECTRICAL OVERLOAD
Master switch OFF
Reselect ON briefly to permit use of the radio and electrical circuits for limited period.
Land as soon as possible.
PROPELLER OVERSPEED
Pitch Coarse
Manifold Pressure Reduce
Land as soon as possible
HIGH OIL PRESSURE
Oil Temperature Monitor
Land as soon as possible
LOW FUEL PRESSURE
Primer CARB, operate to maintain fuel pressure.
Land as soon as possible.
ROUGH RUNNING
Throttle Idle, advance slowly, if rough running remains set 72% to clear plugs.
Land as soon as possible
AIRBORNE RESTART
Airspeed 160-220km/h
Throttle 2 Open
Primer CARB, operate
If engine starts
Throttle Max power for 1-2 secs
Reset
UNDERCARRIAGE FAILURE
Emergency air pressure Check, 40-50kgf/cm²
U/C selector NEUTRAL
U/C emergency tap Operate
U/C position Verify DOWN, three greens and mech. indication.
If the undercarriage fails to lower on the emergency system or insufficient air pressure is available the a/c must be landed wheels UP. Do NOT retract the U/C after lowering on the emergency system. Do not close the emerg. air tap until after the engine shut down on landing.
FLAP FAILURE
A flapless approach and landing must be carried out. The approach speed being 160-170 km/h. The flare and the landing roll will be correspondingly longer.
BORINGS IN OIL
If the “Borings in Oil” light illuminates in flight consideration must be given to landing as soon as possible, as this could mean the engine oil contaminated with metallic particles and a potential engine failure.
