PA27 Flashcards
What is the MTOW of the Piper Aztec?
5,200lbs
What is the max ramp weight of the Piper Aztec?
5,200lbs
What is the max landing weight of the Piper Aztec?
4,940lbs
What is the max ZFW of the Aztec?
4,400lbs
What are the stall speeds of the Aztec?
Vs = 74mph Vso = 68mph
What are the Vy and Vyse of the Aztec?
Vy = 120mph Vyse = 102mph (blue line on ASI)
What are the Vx and Vxse of the Aztec?
Vx = 107mph Vxse = 97mph
What are the Vle and Vlo of the Aztec? (+ definitions)
Vle = Vlo = 150mph
Vle is the max velocity with landing gear extended
Vlo is the max velocity with landing gear being operated
On the Aztec they are the same, but they can be different. If so, Vlo are usually lower than Vle. You can also have different Vlo if gear is going up or down.
What is the Vmc of the Aztec? (+ definition)
Vmc = 80mph (red line on ASI)
Vmc is the minimum flight speed at which it is possible to retain control of the aircraft and maintain straight flight, with maximum rudder deflection and not more than 5 degrees of bank, following sudden failure of the critical engine.
What is the Va of the Aztec?
Va = 149mph
What are the Vfe of the Aztec?
1/4 flaps = 160mph
1/2 flaps = 140mph
full flaps = 125mph
What is the Vno of the Aztec?
Vno = 198mph
What is the Vne of the Aztec?
Vne = 249mph
What is the Vr of the Aztec?
Vr = 85mph
What is the Vref of the Aztec?
Vref = 90mph
What is the Vsse of the Aztec? (+ definition)
Vsse = Vmc+10 = 90mph
Vsse is the minimum speed for safe operation on one engine, or for intentional inoperative critical engine.
What is the fuel capacity of the Aztec?
2 inboard tanks + 2 outboard tanks
Each is 36 USG (35 usable) for a total of 860lbs (840lbs usable, 420 inboard 420 outboard)
What is the absolute ceiling of the Aztec?
21,100ft
What is the service ceiling of the Aztec?
19,800ft
What is the absolute ceiling on a single-engine of the Aztec?
6,400ft
What is the service ceiling on a single-engine of the Aztec?
5,000ft
What are the characteristics of the PA27’s ailerons?
They have a counterweight to help the manoevrability and to reduce flutter.
What are the characteristics of the PA27’s rudder?
It is equipped with a servo-tab (going the same way as the rudder, helping the pilot to manoeuver it)
The rudder pedals also control the nose wheel, with a 30° arc.
What are the characteristics of the PA27’s elevator?
Full block elevators.
Equipped with an anti-servo-tab, used as a trim tab, to help maintaining it in the desired position.
An electrical trim is available on left seat yoke.
Which components of the aircraft use the hydraulic system?
Flaps and gears.
How does the hydraulic system work?
Hydraulic fluid pressure is supplied to the control unit by an engine-driven pump mounted on the left engine.
Gears have priority over flaps (gear control unit is mounted before the flaps control unit)
When no action is needed, the hydraulic fluid goes freely through the system (bypass).
Handles automatically return to neutral position when flaps or gears are fully down or up.
How long does it take to gears and flaps to go fully down?
Flaps take approx. 3 sec.
Gears take 9 to 12 sec.
What if the hydraulic system fails?
PA27 is equipped with an emergency hydraulic hand pump, which will provide pressure in the hydraulic system if the pump fails.
About 50 pushs are needed to fully lower the gears.
Apart from using the hydraulic system, what else can you use to lower the gears?
A CO2 system is available to extend the gears in case of complete hydraulic system failure.
What system prevents the retraction of the landing gear when on ground?
An oleo-actuated bypass valve is mounted on left main gear to bypass the system while aircraft weight is on the gear.
What system prevents the total loss of hydraulic fluid in the event of a leak?
The hydraulic fluid tank is equipped with a standpipe that isolates the leak and keep a minimum amount of fluid in the tank.
What to do in case one of the engines doesn’t receive fuel anymore?
- Failed engine fuel selector OFF
- Other engine electrical pump ON
- Crossfeed ON
