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101 Cards in this Set
- Front
- Back
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Minimum turning radius (from pivot point to wingtip) |
33 ft |
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Engine name and manufacturer |
Lycoming O-360-E1A6D (left) LO-360-E1A6D (right) |
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Rated HP |
180 hp |
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Rated engine speed (rpm) and green arc of tachometer? |
2700 rpm Green arc: 500 - 2700 rpm |
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Engine type |
Four cylinder Direct drive Horizontally opposed Air cooled |
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Propeller manufacturer |
Hartzell |
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Number of blades per propeller |
2 |
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Propeller max and min diameter |
74 inch max 72 inch min |
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Propeller type |
Constant speed Hydraulically actuated Full feathering |
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Fuel capacity (total and usable) |
110 US gal Usable 108 US gal |
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Minimum fuel grade used |
100 (green) 100LL (blue) |
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Oil capacity per engine |
6 US quarts |
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Max takeoff weight? Max ramp weight? |
3800 lbs max TO weight 3816 lbs max ramp weight |
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Max weight in baggage compartment |
200 lbs |
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Wing loading? Power loading? |
21.1 lbs per square foot 10.55 lbs per HP |
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Vne |
Never exceed speed 202 KIAS |
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Vno? |
Maximum structural cruising speed, do not exceed this speed except in smooth air and then only with caution 169 KIAS |
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Vfe? |
Max flaps extended speed 111KIAS |
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Vle? |
Max gear EXTENDED speed 140 KIAS |
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Vlo ? 2 speeds |
Max gear EXTENDING speed and max gear RETRACTING speed (both end in -ing) 140 KIAS 109 KIAS |
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Vmca? |
Air minimum control speed. Lowest speed at which plane is controllable with one engine operating and NO flaps. STALLED condition. 56 KIAS |
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Vyse? |
Best rate of climb speed with one engine operative 88 KIAS (same as Vy) |
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Yellow arc? |
Caution range, smooth air only 169-202 KTS |
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Green arc? |
Normal operating range 57-169 KTS |
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White arc? |
Flaps down speed range 55 - 111KTS |
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When do you have max manifold pressure? |
At full throttle |
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Max cht? Green arc? |
Max cylinder head temperature 500 F Green arc: 200 - 435 F |
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Max oil temp? Green arc range? |
245 F Green arc: 75 - 245 F |
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Min and max Oil Pressure? |
Min 25 PSI Max 110 PSI Green Arc: 60 - 90 PSI Yellow arc at idle: 25 - 60 PSI Yellow arc warm up, taxi, T.O. : 90 - 100 PSI |
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Where is the datum? |
78.4 inches ahead of wing leading edge at wing station 106 |
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Max positive G flaps up and down, and max neg G? |
Max +G flaps up: 3.8 G Max +G flaps down: 2.0 G Max -G: None |
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What is the noise level of the seminole? |
74.7 dB (A) |
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Gyro suction limits? |
4.5 - 5.2 inches of Hg |
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What is the demonstrated crosswind component? |
17 KTS |
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Do not open storm window above which speed? |
129 KIAS |
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How many anti-servo tabs are there on the empennage? |
2 - on the stabilator to provide longitudinal stability, moving in the same direction (increasing work of pilot) - on the rudder to increase its effectiveness |
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Which yaw is absent during takeoff? Why? |
Asymmetric thrust since the engines have counter-rotating propellers |
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What engine mount reduces vibration? |
Dynafocal engine mounts |
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How is the engine cooled? |
Air cooled and oil coolers with low temperature bypass systems and engine mounted oil filters |
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What are the two valves on the induction air box? |
- One for induction air: filtered - One via carburetor heat: not filtered |
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What cables do the controls utilize? Why? |
Teflon-lined control cables to reduce friction and binding |
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When is the gear up warning horn switch activated? |
Activated during the last portion of travel of the throttle levers to the low power position |
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How many settings are there on the cowl flap control levers? |
3 - full open - full closed - intermediate |
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Propeller: when you increase oil pressure, what happens? |
High rpm (fine) |
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How long does it take to feather the propeller? |
6 seconds |
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When you increase nitrogen P with large spring, what happens? |
Low rpm, or feather (and prevents overspeeding) |
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Va at 3800 lbs? at 2700lbs? |
3800 lbs = 135 KIAS 2700 lbs = 112 KIAS |
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At what RPM does it become impossible to feather the propeller? Why is this important to know? |
Below 950 RPM from a feathering lock. Must ensure that the prop control is in the feather position before engine speed goes below 950rpm during an engine failure. |
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What type of pump operates the landing gear? |
Electrically powered, reversible hydraulic pump |
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What is the type of landing gear? |
Hydraulically operated, fully retractable, tricycle landing gear |
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How long does it take to lower the landing gear? |
6-7 seconds |
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What should you not do when retract and extend landing gear? |
You can’t change your mind midway. You need to fully extend it then fully retract it or vice versa or else you can damage the electric pump. |
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What allows the landing gear to extend even with hydraulic failure |
The gear is held in the retracted position by hydraulic pressure. So if that fails, they are unlocked and they fall by gravity. If there’s a hydraulic failure, all you have to do is relieve the hydraulic pressure with the emergency gear extension knob. Springs maintain force on each hook to keep it locked. |
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How can you dim the three green landing gear lights? |
By turning on the nav lights (so if you don’t see your green lights during the day, double check to see if your nav lights are off first) |
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How can you verify the condition of the nose gear ? |
Convex mirror on the left engine nacelle |
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What three conditions can lead to one of the three landing lights to not illuminate? |
1) gear is not locked down 2) bulb is burned out (you can pull them out and interchange them to see if one is burnt) 3) malfunction in the indicating system |
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In which 3 conditions will the gear warning horn be activated? |
1) if gear is not down and MP is below 14 inches of Hg on one or both engines 2) if gear selector is in UP position and airplane is on ground (plane knows with the compressed oleo strut) 3) if gear selector is in UP position and flaps are extended to 2nd or 3rd notch position |
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What prevents inadvertent gear retraction when on the ground? |
If gear switch is in UP position on ground, a squat switch in left main gear blocks the hydraulic pump from working.
Once airborne and the oleo strut is fully extended, the safety switch closes to complete the circuit and allows the hydraulic pump to be activated. |
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Where can you access the combination pump and reservoir? |
Through a panel in the baggage compartment |
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What is the electrical power of the TWO alternators? And the battery? |
60 amps each for alt Battery: 35 amp-hour, 12V |
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The voltage regulator maintains load at what voltage? When is the alternator disconnected? |
14V system. Disconnected if exceeds 17V |
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What kind of pumps are there for the fuel pumps? |
Engine driven but there is a backup auxiliary electric fuel pump |
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How much rpm is needed to obtain the full alternator output? |
2000 rpm to get the full output of 60 amps |
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How are the gyro instruments driven? What kind of pumps are they? |
Air-driven gyro instruments Dry-type pumps |
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A decrease in vacuum pressure can signal what? |
- dirty filter - dirty screen - sticky vacuum regulator - leak in system |
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Zero pressure on vacuum pump gauge can indicate what? |
Sheared pump drive Defective pump Defective gauge Collapsed line |
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When the control valve for the alternate static source is on, what must be open? Closed? What is the max error? |
Storm window and cabin vents must be closed Cabin heater and defroster must be open. Max error without a placard: 50 feet |
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Which lights remain illuminated when the engine is feathered? |
Alternator Gyro air and engine oil pressure |
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What should you do to prevent the overheat light to activate when shutting down engine, and when turning heater off in flight? |
On ground, turn the three- position switch to FAN for two minutes with the air intake lever in the open position before turning switch to off. During flight, leave air intake lever open for 15 seconds after turnings switch to off |
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How much fuel is used for combustion heating? |
1/2 gallon per hour. To consider during flight planning |
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By how much should the main, and nose gear oleo struts be exposed? |
Main: by 2.6 inches Nose: 2.7 inches |
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How often should the fuel screens in the strainers be cleaned? |
Every 50 hours or 90 day interval, whichever comes first |
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What must be ON when draining fuel? |
The fuel selectors |
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Where can you drain the fuel? |
With the fuel drain valves, and the gascolators |
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Tire pressure for nose and main gear? |
Nose: 50 psi Main: 55 psi |
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Where can you access the battery? |
Via the fiberglass nose cone |
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Where can you find the serial number plate? |
On the bottom of the fuselage near the aft end of the tail cone |
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When starting engine at ambient temp and below (20F or -7C), how should you start the engines? |
Operate first engine with alternator ON, and second one wait 5 mins before starting it. |
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If below 10F or -12C, what should you do during your walk around to prep the engine? |
Rotate each propeller through 10 blades manually during preflight inspection |
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Maximum ground operation of pitot heat? |
3 minutes |
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Cranking engine and does not start, what should you do? |
Don’t crank more than 30 seconds, and wait a few minutes before trying again |
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Service ceiling and absolute ceiling? |
Service ceiling (less than 100ft/min) 15,000ft Absolute ceiling (Vx=Vy) 17,100ft |
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Single-engine service ceiling? How much % of engine performance is lost when you lose one engine? |
Cannot climb at more than 50ft/min 3,800ft 80% of climb performance is lost if one engine fails. |
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Vsse? |
82 KT |
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How to you make the blades go in coarse/high pitch? |
increase pitch (coarse) = decrease oil P |
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How do you make the blades go in low/fine pitch? |
Increase oil P = fine pitch. high rpm |
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What happens if oil P is lost? |
blades feather, normally. But not for us as we have feathering lock. So if we have oil P loss then we need to retard prop to feather because it won’t do it on its own. |
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What are the steps the blades go through to feather? |
Goes from low pitch, to high pitch, and then full feather (80 to 90 degrees). |
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How can you unfeather the blades? |
To unfeather the engine, activate starter (which moves the propeller), which gets oil pressure in the system to unfeather the prop (coarse). Then you’ll have ram air effect to get the propeller to windmill. |
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why would you start left engine first? |
Wire from battery to starter is shorter to go to left engine. So less current drop/loss to go to left engine first. Good when it’s cold outside. Also because if there’s a fire you can have access to the right door |
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What is the minimum output for the alternator to supply full charge? |
2000RPM below this -> battery |
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What should you do if CHT is near the red line? |
- reduce power - enrich mixture - pitch down for increased speed - open cowl flaps |
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Quickest way to lose altitude in an emergency descent ? |
lower the nose, reduce power to idle, dive |
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Best way to adjust mixture in flight?
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Use EGT |
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How do you get best economy? best power? |
best economy = peak EGT best power = peak EGT + 125 F |
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What is the heater system called and where how does it run? |
Janitrol heater. Takes fuel from the LEFT tank so heat up. |
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How many vacuum pumps are there? How are they driven? |
2 engine driven vacuum pumps |
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How many fuel pumps are there? |
4 -> 2 electrically-driven ones and 2 engine-driven ones |
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What is the voltage of the electrical system? |
12V |
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Where is the serial number plate located? |
On the bottom of the fuselage near the aft end of the tail cone. |
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When do you have to change the battery ELT? |
On the date of it or - if used in an emergency - test time exceeds one hour - has been activated for an undetermined time period |
