Re: Wing sweepback and turbulence question

@convair880mfan Swept back wings enter the gust (a "w" gust, i.e., a vertical gust) more progressively, so the load factor builds up more slowly. The sharper the gust front, the more obvious the effect. For a bit more technical details, see https://apps.dtic.mil/sti/citations/ADA381486 (o...

Re: Flap movement always in stages?

Florianopolis, in general, on the Airbus A320 series, we normally don't intentionally allow the airspeed to increase to the point where the auto-retract system kicks in, but sometimes, particularly on the A321 since it is a heavier aircraft, it does. During climb out, we are more focused on the var...

Re: Flap movement always in stages?

Sorta. It depends on whether you are above or below auto-retract speed. The flap movement speeds on takeoff and approach are normally a bit different, so in effect it makes a difference whether you are approaching or departing. For example, you might not retract to clean until 230 knots when depart...

Re: Flap movement always in stages?

This is slightly off-topic, but on the bus if you put the flap lever in 1, the actual position of the flaps and slats depends on if the airplane thinks you're taking off or landing?

Re: Private Jet Subcharter

Thanks, that makes sense. It's more than just go uber the airplane for the weekend. You change the entire nature of your operation.

Re: Private Jet Subcharter

GalaxyFlyer wrote:

In the US, the ones I mentioned are about the best, but chartering out a private jet has lots of downsides—beware.

Re: Control tower in uncontrolled airspace

I believe Leesburg, Virginia (JYO) is currently a towered field in Class G. There's probably a NOTAM describing how it operates, otherwise §91.126 applies: §91.126 Operating on or in the vicinity of an airport in Class G airspace. (d) Communications with control towers. Unless otherwise authorized o...

Re: Engine noise question

On landing it's a unique combination of flaps, landing gear, speedbrakes, fuel vents . . . every airplane is a choir for us to enjoy. On takeoff they say it's a combination of jet core noise blasting out behind the engine, and the sweet bird song of supersonic fan blade tips. Not as subtle as the ap...

Re: APU Usage

Can I ask a dumb question? I've never seen an air conditioning hose that didn't have a fold or kink in it. Are they not actually *designed* to be that way?

Re: DFW - You're number ???? for takeoff!

Is there still a button to push when you roll onto the runway to tell the FMS position that "wherever you think we are right now is the start of the runway" ?

Re: "It's going to take a little longer because we're a Max"

The motoring sequence can be as long as 2 or 3 minutes. So in LAX when you get pushed in to the alley, ramp is chomping at the bit to get you moving. The push crew has disconnected and driven off, but the fadec is still motoring the engine and hasn’t even thought about doing the engine start sequen...

Re: APU Inflight start on Battery

I mean it makes sense the air is thinner so the APU has to spin faster, but doesn't that also mean that there's less air to squeeze to the same pressures? The same power going in results in a higher rotation speed because the air is thinner for the same compression, in other words? Could it be becau...

Re: Unexplained objects on UPS pushback tug tow bar

Maybe storage boxes for wires, pins, wands, etc etc?

Re: Driving record impact on pilot background check

I echo what the others have stated. A couple speeding tickets will not foreclose a career (at the majors, at least), but that doesn't mean they're meaningless. If you keep getting them, it indicates a pattern of recklessness and disregard for rules, which are obviously undesirable airline pilot qual...

Re: How do the carrier landing aircraft manage to descend during approach with such a big positive pitch angle

Trimeresurus, may I recommend getting yourself a copy of Wolfgang Langewiesche's book, Stick and Rudder . Pick up a used copy or try here: https://www.amazon.com/Stick-Rudder-Explanation-Art-Flying/dp/0070362408 From the Back Cover WHAT'S IN STICK AND RUDDER: * The invisible secret of all heavier-th...

Re: How do the carrier landing aircraft manage to descend during approach with such a big positive pitch angle

Save the DC-8 iirc, various regional jets, some Russian stuff, most aircraft have a positive nose angle to horizon when on a normal descent. I don't want to go too off-topic, but the big difference is the leading edge devices. As you extend and lower the trailing-edge flaps, the wing camber and cho...

Re: How do the carrier landing aircraft manage to descend during approach with such a big positive pitch angle

How does it manage to keep descending at such a pitch up attitude? 8 degrees of angle of attack and still descending. How does that happen? This is a subtle point, but I'm not sure you're getting it: Angle of attack is only part of whether you are climbing or descending, along with airspeed and thr...

Re: How do the carrier landing aircraft manage to descend during approach with such a big positive pitch angle

Let's go back to the basics. Imagine you're a student pilot sitting your Cessna 172. Your instructor points to the control yoke in front of you, and says, "You push and pull on this, and what are you controlling?" You say, "I pull back and I climb, I push forward and we descend."...

Re: RNAV (RNP) Approaches In The U.S.

If you can do your checkride in the sim, why can't you demonstrate the approaches for the approval in a simulator, too?

Re: Pacific Clipperton FIR doubt..!?

Their logo looks official enough to me: https://i.ibb.co/gSd1J5p/Clipperton.jpg And their "website" is straight jacked from Myanmar's civil aviation authority*. cf https://www.dca.gov.mm/ and http://dca.clipperton-gov.co/ It looks like it's done by these folks: https://ops.group/story/what...

Re: 777-9 back to a grey cockpit ?

Perhaps things have changed since the 1990s PBS 777 documentary: Warm colors like brown were found to be more inviting, pilots were more alert, and it was better at hiding dirt. http://www.youtube.com/watch?v=0oyWZjdXxlw&t=43m32s Unrelated: I hope we can all be as excited about something in life...

Re: Hypothetical: Engine failure on trijet retirement ferry flight

Read up on Part 121.565 (b) says for engine failure enroute for three and four engine planes. You’re not a test pilot in this case, assuming simple engine failure, it’s authorized to continue. Double engine failures are trained on both three and four engine civil types as both initial and recurrent...

Re: Hypothetical: Engine failure on trijet retirement ferry flight

You're gonna have to see what the checklist says to do with the engine failure. Most of the Part 121 ATP-certificated captains I know are acutely jealous of maintaining their certificate privileges, and care much more about that than whether the airplane will need an expensive engine change (that ma...

787 Engine Start & Spoilers