Search found 20797 matches

by Starlionblue
Wed Oct 20, 2021 2:22 am
Forum: Technical/Operations
Topic: Aircraft that are heavy on the controls or light?
Replies: 13
Views: 579

Re: Aircraft that are heavy on the controls or light?

Most modern, and all large planes, have artificial feel. Control forces are also mandated in FAR Part 21 standards. However, older planes and particularly general aviation types, have different or no such standards. From my experience, the humble Piper Apache had the highest rudder force required w...

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by Starlionblue
Tue Oct 19, 2021 11:49 pm
Forum: Technical/Operations
Topic: Aircraft that are heavy on the controls or light?
Replies: 13
Views: 579

Re: Aircraft that are heavy on the controls or light?

Airbus aircraft (and I believe all FBW aircraft) have an entirely artificial feel, since they lack a mechanical connection to the flight control surfaces. Usually they try to go for low forces to reduce physical exhaustion. Airbus doesn't have artificial feel at all and there is no feedback from th...

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by Starlionblue
Tue Oct 19, 2021 6:21 am
Forum: Technical/Operations
Topic: Circling to Land in an Airliner. JAC
Replies: 16
Views: 1420

Re: Circling to Land in an Airliner. JAC

Sooo therefore pilots probably want to reduce how much time is spent on circle since it’s gonna require a lot of thrust while in this high drag, level altitude configuration, and noise close to the ground above potentially crowded areas. Those are not really considerations on the day for an airline...

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by Starlionblue
Tue Oct 19, 2021 12:25 am
Forum: Technical/Operations
Topic: EasyJet A321 flew out-of-balance after seated for A320
Replies: 13
Views: 1998

Re: EasyJet A321 flew out-of-balance after seated for A320

I always thought that on Airbus FBW aircraft, you just command a roll or pitch rate with the sidestick (at least in normal law). But in that case (wrong CG) you wouldn't feel a difference when rotating, since the FBW would just command more elevator to achieve the pitch change/rotation. The devil i...

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by Starlionblue
Thu Oct 14, 2021 6:09 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4370

Re: Is innovation declining?

It really isn't all engine. The A350 wing is much more efficient than the A330/A340. The cruising altitude and speed of the A350 are quite different compared to the A340. Several thousand feet higher initial altitude. M0.85 compared to M0.81-0.82 doesn't sound like much but over medium and long hau...

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by Starlionblue
Wed Oct 13, 2021 1:25 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4370

Re: Is innovation declining?

Let me give you a small example of how advanced the A350 is. SAA used to lift about 135t of fuel and flew at M0.82/83 in the 317 seat A346 on the JNB-JFK route. Obviously this was dependent on conditions of the day. The 330 seat A359 lifted about 95t of fuel and flew at M0.85/86. Work out those sav...

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by Starlionblue
Tue Oct 12, 2021 6:25 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4370

Re: Is innovation declining?

I think your observation of the decelerating pace of new designs (however we define that) is a reflection of the fact that the lower-hanging fruit have been picked, and now the OEMs need to reach farther up to grab the next set. To me open rotor is more low-hanging fruit than major innovation, and ...

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by Starlionblue
Mon Oct 11, 2021 7:42 am
Forum: Technical/Operations
Topic: What's this contraption?
Replies: 13
Views: 2008

Re: What's this contraption?

DC-9-41 ? Yep, MDD often made versions for as it turned out, one or two customers (and I don’t mean US majors), of the DC-9 with various fuselage lengths and very short production runs. So very much this. A good example is the DC-9-21 that was made for SAS only. It had the -10 series fuselage and t...

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by Starlionblue
Mon Oct 11, 2021 4:32 am
Forum: Travel, Polls & Preferences
Topic: So sick of all these cancelled flights
Replies: 20
Views: 2224

Re: So sick of all these cancelled flights

The latest is Southwest canceling thousands of them, citing air traffic controller issues, despite the airports themselves saying they have no issues at all. I am so sick of all these airlines cancelling all of these flights all the time. In the last 6 months, it's happened more than ever. Screw ev...

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by Starlionblue
Mon Oct 11, 2021 4:25 am
Forum: Technical/Operations
Topic: What's this contraption?
Replies: 13
Views: 2008

Re: What's this contraption?

77west wrote:
Parking guide?


Indeed. These were not uncommon back in the day. I've seen pics of a 747 with what looks like a fender on the windshield. Once it just touches the windshield, you're in the right spot.

Simple and effective.

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by Starlionblue
Sun Oct 10, 2021 11:20 pm
Forum: Technical/Operations
Topic: Could flap operation be automated?
Replies: 18
Views: 1589

Re: Could flap operation be automated?

I was wondering about this since flap movement is tied to variables like weight and speed. Could flight deck automation remove from pilots the task of lowering and raising flaps based on aircraft configuration? Yes, it is possible. No, it is not welcome. And not for a "human don't like automat...

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by Starlionblue
Sat Oct 09, 2021 8:51 am
Forum: Technical/Operations
Topic: EGLL SID Altitude Constraints
Replies: 7
Views: 713

Re: EGLL SID Altitude Constraints

It bears mention that SID and STAR restrictions are in place partly because of NORDO possibilities. In the admittedly unlikely event ATC loses radar and/or radio, they ensure aircraft can proceed already deconflicted as long as they follow the published procedures. In normal ops, ATC can be more eff...

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by Starlionblue
Tue Oct 05, 2021 12:28 am
Forum: Technical/Operations
Topic: How many miles before touchdown are final landing flaps selected?
Replies: 5
Views: 665

Re: How many miles before touchdown are final landing flaps selected?

I'm sure someone will correct me if I'm wrong but I believe most airlines' SOP requires the aircraft to be in landing configuration at the outer marker of the ILS (4-7nm out). This will probably change at unique approaches such as Tegucigalpa or other RNAV approaches where there is no ILS marker. I...

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by Starlionblue
Mon Oct 04, 2021 11:56 pm
Forum: Technical/Operations
Topic: How many miles before touchdown are final landing flaps selected?
Replies: 5
Views: 665

Re: How many miles before touchdown are final landing flaps selected?

It somewhat depends on the stabilised approach policy for the particular operator. At my operator, the aircraft needs to be in final configuration, with the landing checklist completed, by 1000ft AAL. You have to allow some time for the flaps to move and for the checklist. Also a little buffer in ca...

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by Starlionblue
Mon Oct 04, 2021 4:53 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4370

Re: Is innovation declining?

Agreed with N1120A. The 787 and A350 may look similar to the previous generation on the outside, but there is massive innovation under the skin. No one outside of China is developing a new commercial airliner now. The 787/A350 was launched in 2004/2006. That's a long time ago. I understood that the...

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by Starlionblue
Sun Oct 03, 2021 10:27 am
Forum: Technical/Operations
Topic: Landing lights question
Replies: 12
Views: 1891

Re: Landing lights question

Different operators have different procedures.

And yes, sometimes we forget things. ;)

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by Starlionblue
Sun Oct 03, 2021 10:24 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4370

Re: Is innovation declining?

Agreed with N1120A. The 787 and A350 may look similar to the previous generation on the outside, but there is massive innovation under the skin. SpaceX is indeed innovating massively, but the aircraft equivalent is creating the DC-3 after the Ford Trimotor, or the 707 after the war. A very different...

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by Starlionblue
Sat Oct 02, 2021 10:26 am
Forum: Technical/Operations
Topic: In a circling approach, how much of a straight path is required before landing.
Replies: 20
Views: 1398

Re: In a circling approach, how much of a straight path is required before landing.

GalaxyFlyer, Regarding visual approaches . . . How does that work? Does the aircraft request it and then need approval from ATC? Does ATC suggest it? I know there are published visual approaches like the one into DCA. I am not aware of any published visual approaches for Albuquerque although the we...

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by Starlionblue
Sat Oct 02, 2021 10:23 am
Forum: Technical/Operations
Topic: VFR with Single Engine Piston into big airports in the US
Replies: 10
Views: 1006

Re: VFR with Single Engine Piston into big airports in the US

In most of the world, landing fees are the norm everywhere. In the US, not so much... Last May, when the pandemic had sharply limited passenger flying, there were some unusual opportunities for light GA pilots - I saw a Cessna 172 and 182 do full-stop landings on the south side of LAX. But even in b...

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by Starlionblue
Fri Oct 01, 2021 11:54 pm
Forum: Technical/Operations
Topic: In a circling approach, how much of a straight path is required before landing.
Replies: 20
Views: 1398

Re: In a circling approach, how much of a straight path is required before landing.

Our ops manual mandates wings level by 300 feet AAL for a visual approach. However, the aircraft must be established on the vertical path by 1000ft AAL.

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by Starlionblue
Fri Oct 01, 2021 9:46 am
Forum: Technical/Operations
Topic: How soon after takeoff can an airliner safely start a turn?
Replies: 24
Views: 2086

Re: How soon after takeoff can an airliner safely start a turn?

I wonder how the 400 figure was arrived at? How long is an aircraft in ground effect after takeoff? I wouldn't imagine its very long at those speeds. At 500 agl do you do a 30 degree turn or 15 %. On Airbus, takeoff inhibit for warnings stops at 400 feet. But I don't know if that is coincidental or...

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by Starlionblue
Fri Oct 01, 2021 5:34 am
Forum: Technical/Operations
Topic: Why do ailerons and speed brake panels become so active during the approach phase of flight?
Replies: 14
Views: 1145

Re: Why do ailerons and speed brake panels become so active during the approach phase of flight?

Does the weight and momentum of the larger jet transports have something to do with their stability during approach and landing? A library donated all their issues of Aviation Week and Space Technology magazines to me when the library decided to go digital. I've dug up an old AW&ST pilot report...

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by Starlionblue
Fri Oct 01, 2021 5:28 am
Forum: Technical/Operations
Topic: If snubbers failed to stop wheel rotation during retraction, would this adversely affect the airplane?
Replies: 8
Views: 1220

Re: If snubbers failed to stop wheel rotation during retraction, would this adversely affect the airplane?

Or would they just continue spinning until they decelerated on their own in their wheel wells? Would the spinning wheels engendered by failed snubbers create a gyroscopic force on the aircraft. I've never read of snubbers failing. Maybe they are too simple to fail. I collect aircraft manual and hav...

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by Starlionblue
Fri Oct 01, 2021 5:25 am
Forum: Technical/Operations
Topic: How soon after takeoff can an airliner safely start a turn?
Replies: 24
Views: 2086

Re: How soon after takeoff can an airliner safely start a turn?

Our ops manual says 400feet AAL, or as specified in the port notes. Same policy as Snuffaluffagus, in other words.

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by Starlionblue
Fri Oct 01, 2021 12:06 am
Forum: Technical/Operations
Topic: On modern airliners, what flight deck instruments are available in the case of loss of all electric power?
Replies: 2
Views: 661

Re: On modern airliners, what flight deck instruments are available in the case of loss of all electric power?

I have heard that all airlines have a wet compass [viewed by a mirror, I believe, on the MD-80 series aircraft]. What other instruments will continue to function in the case of a loss of all electric power [exceedingly rare I guess because of RATs]?. Could airline pilots use their cell phones or la...

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by Starlionblue
Thu Sep 30, 2021 11:57 pm
Forum: Technical/Operations
Topic: 747-8 engine choice
Replies: 46
Views: 3786

Re: 747-8 engine choice

For less development cost the 747-8 could have used a bleed-air version of the normal GE-nx, with more thrust (74,100 vs 65,000). This would have added 1308 lbs of extra engine weight, plus some pylon reinforcement. [...] Would this have allowed the 747-8 to fly higher, and therefore save fuel? Not...

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by Starlionblue
Thu Sep 30, 2021 11:51 pm
Forum: Technical/Operations
Topic: Avionics update for A32Xneo family?
Replies: 5
Views: 959

Re: Avionics update for A32Xneo family?

- Onboard Airport Navigation System to depict an airport map on the nav display; and It's an interesting feature to have on board. I believe that the A350 has that. It also shows the pilots where exactly they stand on the terminal when they run their engine start and departure checklists, before pu...

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by Starlionblue
Thu Sep 30, 2021 11:46 pm
Forum: Technical/Operations
Topic: Why do ailerons and speed brake panels become so active during the approach phase of flight?
Replies: 14
Views: 1145

Re: Why do ailerons and speed brake panels become so active during the approach phase of flight?

As fdxtulmech says, lower airspeed means a control surface has to move more in order to have the same effect. At high speed, in the cruise, surfaces only need to move a tiny amount. There's also the fact that larger aircraft don't react right away. As GalaxyFlyer says, anticipation is key. This is a...

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by Starlionblue
Thu Sep 30, 2021 10:26 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 31
Views: 2111

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

737 has cables going to flight controls, actuated by a person. These people powered generators consume cheap coffee and garbage airport food. The muscle-powered actuators... What about emergency electric generation? Windmilling engines, only batteries, or a dozen hamsters running inside a ball? Per...

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by Starlionblue
Thu Sep 30, 2021 8:31 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 31
Views: 2111

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

Redbellyguppy wrote:
737 has cables going to flight controls, actuated by a person. These people powered generators consume cheap coffee and garbage airport food.


The muscle-powered actuators...

What about emergency electric generation? Windmilling engines, only batteries, or a dozen hamsters running inside a ball?

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by Starlionblue
Thu Sep 30, 2021 4:16 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 31
Views: 2111

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

A380 - RAT drives the emergency electrical generator only. Emergency hydraulic power through self-contained surface actuators. RAT housed in first flap track fairing on the left wing. As mentioned above, it is the largest RAT prop in the world, at 163cm in diameter.

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by Starlionblue
Thu Sep 30, 2021 1:26 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 31
Views: 2111

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

A330/A340 - RAT powers the green hydraulic system only. Emergency electrical generation through the emergency generator, powered by the green system. RAT is housed in the third flap track fairing on the right wing. A350 - RAT drives the emergency electrical generator only. Emergency hydraulic power ...

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by Starlionblue
Wed Sep 29, 2021 2:58 pm
Forum: Technical/Operations
Topic: Is it true that the American 191 and Air Florida 90 accidents could have been averted if the pilots had added power?
Replies: 16
Views: 2345

Re: Is it true that the American 151 and Air Florida 90 accidents could have been averted if the pilots had added power?

As a result of many accidents in the past the FAA has been emphasizing stall recovery and awareness. They’ve mandated periodic training going back to basic airmanship. The accidents due to rudder hard over the pilots never recognized what they had gotten into either and had very little time to diag...

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by Starlionblue
Tue Sep 28, 2021 2:43 am
Forum: Technical/Operations
Topic: A330 Rod Assy we cant figure out what its for.
Replies: 4
Views: 977

Re: A330 Rod Assy we cant figure out what its for.

So ive been working on the A330 for some time and i noticed this rod assy but we cant figure out what its purpose so maybe u guys can help. Its in the „hydraulics compartment“ or wheel bay or center wing box whatever u wanna name it apperantly it has different names in different places. The weird t...

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by Starlionblue
Tue Sep 28, 2021 2:35 am
Forum: Technical/Operations
Topic: Is it true that the American 191 and Air Florida 90 accidents could have been averted if the pilots had added power?
Replies: 16
Views: 2345

Re: Is it true that the American 151 and Air Florida 90 accidents could have been averted if the pilots had added power?

I'll add that any deviation from standard procedure should be approached with great caution, and only for very good and evident reasons. As the saying goes, "If you deviated from standard procedure, you are now a test pilot without test pilot training..." In a hypothetical scenario where A...

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by Starlionblue
Tue Sep 28, 2021 12:17 am
Forum: Technical/Operations
Topic: Is it true that the American 191 and Air Florida 90 accidents could have been averted if the pilots had added power?
Replies: 16
Views: 2345

Re: Is it true that the American 151 and Air Florida 90 accidents could have been averted if the pilots had added power?

Agreed convair880mfan on AA191 (not 151). The pitch and power settings used were based on the slats being extended. However, when the engine departed it severed the hydraulic lines, leading to slat retraction on that wing. Without the slats, the wing stalled because it was beyond the critical angle ...

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by Starlionblue
Mon Sep 27, 2021 6:57 am
Forum: Technical/Operations
Topic: A320 Idle Speed
Replies: 11
Views: 1351

Re: A320 Idle Speed

Parking brake set. Set up for single engine taxi on left engine only. It sounds different than after a normal 2 than 1 start. (As viewed from the ramp) I suppose the idle might be a bit higher because one engine has to supply all the bleed air and hydraulic power (through the PTU in this case), but...

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by Starlionblue
Mon Sep 27, 2021 6:56 am
Forum: Technical/Operations
Topic: Since LAX departures are usually out over the ocean, do all aircraft need overwater equipment?
Replies: 24
Views: 2185

Re: Since LAX departures are usually out over the ocean, do all aircraft need overwater equipment?

Most LAX departures fly out a ways over the Pacific Ocean before turning. Do all the airliners that fly into or out of LAX need rafts and life vests? A lot of different type aircraft utilize this airport including smaller regional jets and turboprop airliners. What are the rules? I realize that man...

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by Starlionblue
Mon Sep 27, 2021 4:46 am
Forum: Technical/Operations
Topic: A320 Idle Speed
Replies: 11
Views: 1351

Re: A320 Idle Speed

Thrusty69 wrote:
Does an A320 With V2500 idle at a different speed with just the left engine running (single engine taxi)?


What do you mean by "idle" in this context?

The engine's ground idle thrust will be the same regardless of whether the other engine is running.

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by Starlionblue
Mon Sep 27, 2021 3:06 am
Forum: Technical/Operations
Topic: What constitutes a dive as opposed to a sinking situation in an aircraft?
Replies: 8
Views: 759

Re: What constitutes a dive as opposed to a sinking situation in an aircraft?

What I'm hearing is that the term "dive" is not used in commercial aviation. So then even an emergency descent would never be called a "dive" but just an extreme descent. Indeed. Even in an emergency descent, the pitch angle is not very steep. I can't remember exactly but my imp...

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by Starlionblue
Sun Sep 26, 2021 11:45 pm
Forum: Technical/Operations
Topic: What constitutes a dive as opposed to a sinking situation in an aircraft?
Replies: 8
Views: 759

Re: What constitutes a dive as opposed to a sinking situation in an aircraft?

I'd call a descent a descent. Even an emergency descent at 6000+ ft/min is still a descent. The word "dive" is not found in either FCOM or FCTM for the A330. AFAIK there is no exact definition of a dive, but as I see it, aerobatic aircraft dive, and airliners, as a rule, do not. "Sink...

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by Starlionblue
Sat Sep 25, 2021 5:00 am
Forum: Technical/Operations
Topic: Why do some major airports like LAX and PHX not have crosswind runways?
Replies: 20
Views: 2823

Re: Why do some major airports like LAX and PHX not have crosswind runways?

Crosswind runways are still quite important in the Northeast US. BOS, JFK and LGA all regularly use their crosswind runways. Newark uses theirs some, though they try and limit it. ORD does still have crosswind runways, which are used reasonably often. LHR's crosswind runway was always too short for...

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by Starlionblue
Fri Sep 24, 2021 12:58 am
Forum: Technical/Operations
Topic: What makes up of the JT3D hush kit?
Replies: 12
Views: 1201

Re: What makes up of the JT3D hush kit?

There was a hushkit fitted to early 707s, which looks pretty bizarre. I've heard it referred to as the "Buck Rogers". I can't imagine that this was tremendously effective (hence, why it was so difficult to find an image of it): https://i.stack.imgur.com/z6Eji.jpg Would you guys think that...

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by Starlionblue
Thu Sep 23, 2021 2:13 am
Forum: Technical/Operations
Topic: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?
Replies: 19
Views: 1701

Re: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?

There is different fees or insurance costs associated with having the “full” license? Very Americanon my part. I have an English friend I got together with years ago in Florida. He was stunned someone would take his credit card and give him a boat for the afternoon with nothing in the way of a lice...

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by Starlionblue
Thu Sep 23, 2021 1:44 am
Forum: Technical/Operations
Topic: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?
Replies: 19
Views: 1701

Re: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?

Is there a special power steering license? What’s the point of differentiating between gearboxes? To clarify, there is no "manual only" license. If you have the manual, you may also drive automatic, but not the other way around. Manual requires an extra skillset, I suppose. When I was gro...

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by Starlionblue
Wed Sep 22, 2021 11:20 pm
Forum: Technical/Operations
Topic: Can anyone identify the flap settings from this video sequence [Boeing 737-200 Combi]
Replies: 4
Views: 730

Re: Can anyone identify the flap settings from this video sequence [Boeing 737-200 Combi]

AFAIK, a link to a YT video is not a problem. https://youtu.be/auup44kEq8U Maybe I am asking too much of the members here, but I wonder if anyone can identify the flap positions from the flap movements in a video entitled: "FULL FLIGHT Canadian North Boeing 737-200 Combi Edmonton to Yellow Knif...

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by Starlionblue
Wed Sep 22, 2021 11:15 pm
Forum: Technical/Operations
Topic: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?
Replies: 19
Views: 1701

Re: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?

I second the stay in school advice. Dropping out of school to sling bags isn't my idea of getting very much into aviation as a career. Yes some people do make a career of ramp agent, possibly moving into gate agent or off to a cargo department or maintenance stores. My question is about the UK auto...

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by Starlionblue
Wed Sep 22, 2021 5:12 pm
Forum: Technical/Operations
Topic: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?
Replies: 19
Views: 1701

Re: Do I need a manual driving license to be a Ramp Agent or is an automatic license satisfactory?

The best way to find out is to contact one of the employers and ask. However, I wager you'll need to be able to drive a manual, as I doubt the ramp vehicle fleets are all automatic. And even if they are all automatic, having a requirement for a "full" license is just one more way of cuttin...

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by Starlionblue
Wed Sep 22, 2021 12:27 am
Forum: Technical/Operations
Topic: Trim on AN-124/225
Replies: 6
Views: 1028

Re: Trim on AN-124/225

These are all great replies especially the last (did not know topic had been asked previously), that being said what other ways are there for such a large aircraft to achieve any sort of trim? I presume the fly-by wire option is the most realistic? Curious to know if there are any AN-124/225 operat...

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by Starlionblue
Wed Sep 22, 2021 12:23 am
Forum: Technical/Operations
Topic: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?
Replies: 6
Views: 1114

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Watching airliners come in for landings, I notice that many have a nose high attitude during the final approach. What about during the initial descent? As BWIAirport says, the pitch angle during the descent is within a few degrees of level. Looking at the unreliable airspeed reference for the A330,...

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