Why does the speed tape on the PFD reads 45kt when the aircraft is stationary?

Why does the speed tape on the PFD reads 45kt when the aircraft is stationary?

The speed is too low for an indication.

What are the advantages of an all moving/variable incidence tailplane?

What are the advantages of an all moving/variable incidence tailplane?

This provides pitch manoeuvrability.

Longitudinal balancing by the trim system.

What is the relevance of the mass and balance document?

What is the relevance of the mass and balance document?

It’s an official document for the safety of the flight.

A copy of this document needs to remain on the ground.

What is VMBE?

What is VMBE?

The maximum brake energy speed.

It is a function of the gross weight, altitude, temperature, runway slope, wind component, and braking configuration.

V1 must be less than VMBE.

Explain V1, V2, VR, VMCA and VMCG

Explain V1, V2, VR, VMCA and VMCG

V1 is the decision speed (sometimes referred to as critical engine speed or critical engine failure speed) by which any decision to reject a takeoff must be made.

V2 is the takeoff safety speed which must be attained at the 35 ft height at the end of the required runway distance. This is essentially the best one-engine inoperative angle of climb speed for the airplane and is a minimum speed for flight in that condition until at least 400 ft above the ground. V2 shall be at least 1.1 times VMCA, and no less than 1.2 times VS.

Vr is defined as the speed at which the rotation of the aircraft should be initiated to takeoff attitude.

VMCA is the minimum control speed in the air and is defined as the minimum speed, whilst in the air, that directional control can be maintained with one engine inoperative (critical engine on two engine aerolanes), operating engine(s) at takeoff power and a maximum of 5 degrees of bank towards the good engine(s).

VMCG is the minimum control speed on the ground and is defined as the minimum speed, whilst on the ground, that directional control can be maintained, using only aerodynamic controls, with one engine inoperative (critical engine on two engine airplanes) and takeoff power applied on the other engine(s).

What is wing loading?

What is wing loading?

Wing loading is the loaded weight of the aircraft divided by the area of the wing.

The faster an aircraft flies, the more lift is produced by each unit area of the wing. Correspondingly, the landing and take-off speeds will be higher and the high wing loading also decreases maneuverability.

Why are the indications on an FMA preferred over an MCP?

Why are the indications on an FMA preferred over an MCP?

Always make sure to update yourself with the latest information on these type of questions.

CFM56-7 series with a max takeoff thrust of 27,300lb.

These engines have higher thrust, improved efficiency, and lower maintenance costs than its predecessor, the CFM56-3 series.

180 minutes extended range (ETOPS).

Bypass ratio 5.5:1

Why are NDB powered so that they only have a range between 15-25 miles?

Why are NDB powered so that they only have a range between 15-25 miles?

NDB’s can suffer from a lot of errors.

How does an ILS work?

How does an ILS work?

An ILS (Instrument Landing System) is defined as a precision runway approach aid based on two radio beams which together provide pilots with both vertical and horizontal guidance during an approach to land.

The ILS aerials transmit two lobes. For a pilot on final, the lobe to his right is modulated at a frequency of 150 Hz and the one to his left at 90 Hz. The point where the lobes meet is the centre line of the runway. As the signals on the lobe move from the centre line to either side, their amplitude increases. This means the magnitude of their depth modulation increases. The depth modulation can be considered as a percentage. For example, if an aircraft receives a 15% depth modulated signal from the left and a 5% depth modulated signal from the right, the difference of modulation becomes 10% to the left. This electrical imbalance is sent to the aircraft and the localizer needle is designed in such a way that it will show a deflection to the opposite direction, telling the pilot to go to the right.

When on the centre line, the modulation difference is zero and the needle centres itself.

The glide slope or the glide path provides the pilot with vertical guidance. The glide slope is set such that a glide slope angle of 3 degrees is maintained by the pilot. The needle of the slope moves up, if the aircraft is too low and moves down if it is too much above the required path. The glide slope is on the UHF band (329.15 - 335 Mhz).

The glide slope operates the same way as the localizer. The only difference is that the lobes are emitted on the vertical plane. The upper lobe is modulated at 90 Hz while the bottom one at 150 Hz. Exactly the same way as before, the needle of the slope moves based on the difference in depth modulation. As like before when the modulation difference is nil, the glide needle moves to the very centre of the instrument.

What is a METAR?

What is a METAR?

A METAR is an observation of the actual weather given by a meteorological observer at that aerodrome.

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