MEB Flashcards
What is the seminoles airframe made out of?
Aluminium. A semi monocoque structure
Is the seminole designed for aerobatic loads?
No
What trim devices does our seminoles have?
Rudder and stabilator trim
What tab does the stabilator have and which direction does it move?
- Anti servo tab
- tab moves same direction as stabilator but with increase travel
What happens to rudder effectiveness with anti servo tab?
Increases
How are the flaps operated in the seminole?
Manually (spring loaded)
What are the 4 different flap selections?
0, 10, 25, 40 degrees
Can the flaps be stepped on by passengers? If so what setting?
Yes, keeps flaps fully retracted whilst loading/unloading passengers
What happens to pitch in the seminole when using flaps? What do we do to counter?
Pitch down.
Requires back pressure
Where is the stall warning device located?
Under the left leading edge of the wing
What type of engine does the seminole have? Explain its details
Lycoming 180HP 4 Cylinder Carburettor Direct driven Horizontally opposed Air cooled
What is the make of the engine?
0-360-E1A6D
What fuel grade is required for the seminole?
100 or 100LL
What oil is required for the seminole?
W100+
What is max, min and oxford oil requirements?
Max 6
Min 2
Oxford 4
What do cowl flaps do?
Allows more air to escape engine and more air to flow over engine
What effect does cowl flaps have on drag?
Increases parasite drag
How are cowl flaps operated in the seminole?
Mechanically
When would you use cowl flaps?
Oil temps getting to yellow arc
Which direction do you turn the primer when unlocking?
Turn clockwise until locking pin is free
How many primes for a cold engine? How about for a warm engine?
Cold 8 primes
Warm 3-4 primes
Where does carby heat get the air from?
Passing induction air past hot engine exhaust manifold
What are the seminole props? Describe them
Hartzell 2 bladed 74” with constant speed unit
Hydraulically actuated
Full feathering
Which direction do the props rotate?
Counter rotating props
What is feathering used for?
Used when engine fails to reduce drag
How do you feather a prop?
Pull the prop lever all the way back, through a detent into the feather position
What happens to the prop pitch if there is a loss of oil?
Prop moves to coarse pitch
What happens if IAS decreases to prop pitch?
Finer pitch to stop underspeed
What happens if IAS increases to prop pitch?
Coarser pitch to stop overspeed
What is the minimum feather RPM?
950RPM
Describe the alternator.
2x60 amp alternators (one on each engine)
Driven by engine via belt
Output 14 volts DC
2 independent alternator switches
What RPM is required for full alternator output?
Approx 2000 RPM
Describe the electrical system regulators
2 solid state regulators
Load share electrical system bus to 14 V
Over voltage relay in each alternator
Describe the battery
35 amp hour
12V battery
How can we start the seminole if the battery is flat?
Piper external power (PEP) through lower left side
If we lose the alternator and battery is depleted, what systems will we lose?
Radio GPS Nav aids Lighting Aux fuel pump Heater Stall warning Pitot heat Normal landing gear extension Engine gauge
Where is the vacuum pump for the seminoles?
On each engine
What are the normal ops for the vacuum pumps?
4.8-5.2 inches of mercury
What systems used the hydraulic system?
Brakes and undercarriage
How do you activate the undercarriage?
Two position gear selector switch (wheel shaped knob)
What happens when the gear is fully extended?
3 green lights illuminate
If gear down selected and you don’t get 3 greens, what should you do?
Turn nav lights off
Check the bulbs
What preventions are there for landing without the gear?
Horn sounds if throttle below 14” MAP while gear retracted
Horn sounds if gear is set to up when on ground
Horn sounds if gear is up and flap at 25 or 40
Where is the squat switch located for the landing gear and what does it do?
On left main gear
Prevents hydraulic pump from actuating if master is turned on
What is the landing gear extension limitations? How about for manual gear extension?
Electric less 140 knots
Manual less 100 knots
What is the landing gear retraction limitation?
Less than 109 knits
What brake fluid do we use?
MIL-H-5606 hydraulic brake fluid
What it the total capacity fuel on the seminole?
110 G or 416 L (2x55G)