# Tag Info

0

I think that the second one is the best option. Also, depending on the plane the pilot might be able to shut down the others controls, while leaving his working. That way the suicidal pilot cannot do anything to alter the course of the aircraft.

2

Does joystick position control bank angle rather than directly controlling aileron/spoileron deflection in some Airbus aircraft? To complement @Bianfable's answer, in Normal Law Flight Mode, Airbus FBW families (including A220) command roll rate via lateral stick position up to the artificial spiral stability limit of 33 deg bank (for A220 it's 30 deg). ...

1

The sidestick (they don't like it when you call it joystick) is not controlling bank angle, but roll rate in flight. On the ground, the control surfaces are deflected proportionally to sidestick movement in order to perform a check of all surfaces before takeoff. The details may vary, but this is generally true for all full fly-by-wire Airbuses. From the ...

0

From a pilot's point of view, yes. I spent 25 years as a commercial pilot, and night flights always had the worst fatalities. I know of several instances where flights were cancelled due to the pilot(s) not turning up due to this fear. During the night, it is harder to make out things like hills, mountains, power stations etc. Basically, the pilot can't ...

5

Companies converted 87 passenger jets in 2018 ... Direct conversion costs for the 87 aircraft totaled \$641.5 million ... The direct cost of converting a Boeing 767-300ER amounts to some \$14 million, compared with \$15 million for an A330-200 and \$16 million for an A330-300 ... Source: Freighter Conversion Market Totaled Nearly \\$1B in 2018: IBA, ...

2

Why does an airliner have a shallow descent when heavier, opposite to gliders with ballast? Actually, gliders share this characteristic with airliners, if we are talking about flight at some given high airspeed that is well above the airspeed for the best L/D ratio. First a few general observations about gliding flight, based on something borrowed from ...

14

Green Dot (GD) speed is a term used by Airbus. It is named after the symbol on the speed tape. It refers to the speed that results in the best climb gradient in case of an engine failure, but it is close the speed resulting in best L/D ratio with all engines operating. Airbus defines it as follows: Definition GD speed is the engine-out operating ...

25

If you can forgive my limited Paint skills: It's the variable/constant speed that makes the difference. Weight changes endurance (time to ground) and not range (distance to ground) if speed is adjusted to match the new weight. Weight changes the speed for best L/D, but does not ever change the best L/D ratio (and thus best range) For gliders (which are ...

0

There are a few things that can happen: They are sold to another airline - In some cases the plane may still have life (cycles) left and may find it's later days flying for another outfit. Sometimes airlines for countries with emerging economies can only afford older aircraft and they may end up far from their original homes. They are sold to cargo ...

23

IF the airliner has HEPA filtration yes, so pathogens floating in the air that happen to get drawn into the recric system would be trapped and not recirculated, so some of the total pathogen load in the cabin, but not all, would be removed. In theory, if you just added a fixed amount of pathogens at the start and just let it run, the concentration would ...

4

Rattling that disappears after liftoff is normally associated with a vibrating tire transmitting vibrations up through the airframe, and causing some sort of interior panel that is a bit loose to rattle in sympathy. On most airliners the brake system applies the main wheel brakes momentarily, once weight-off-wheels, to prevent the usual spin down vibrations ...

26

Modern airliners use HEPA filters to filter the air before re-circulation. This will remove almost all airborne pathogens like viruses: The overall risk of contracting a disease from an ill person onboard an airplane is similar to that in other confined areas with high occupant density, such as a bus, a subway, or movie theatre for a similar time of ...

1

The water source needs to be checked. When I worked in LH it was done twice a year. It was a chore because we had to arrange an airport-pass for the lab guy as he need to get a sample from the spot where they got the water, as well as samples from two of the trucks. Once the test has been passed we were good for another 6 months. Actually the validity was ...

1

Fuel efficiency of a given type can vary considerably over different distances. The conditions necessary for optimal efficiency also vary widely between types. The jet is best at high speeds and high altitudes, so acceleration/climb and deceleration/descent are important considerations on short journeys. The piston engine is more efficient at low altitudes, ...

6

Some modern landing lights have a pulsating or alternating mode. It's just for being recognized more easily, has nothing to do with an emergency. A constant white light heading right for you over a city full of lights doesn't get as much attention as a pulsating light which gets bigger each time as you get closer :) Here is one example: https://www....

-1

What you were likely seeing is the wingtip strobes which are white and flash alternatively. Aircraft don't have "headlights" per-say but they do have landing lights which do not flash by design but can be flashed manually.

Top 50 recent answers are included