Search found 393 matches

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by Yikes!
Mon Apr 25, 2022 2:29 am
Forum: Technical/Operations
Topic: Is there a common speed margin above stall for flap settings?
Replies: 5
Views: 1385

Re: Is there a common speed margin above stall for flap settings?

More than 10 knots, for sure. Usually 1.3 to 1.4 times Vs1g. The 10 knots is a common additive for using 30 degrees of bank. I recall that all minimum speeds are good up to and including 30 degrees of bank. Radar altimetery (sp?) is another question asked while banked. Radar altimeters are set to g...

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by Yikes!
Mon Apr 25, 2022 2:24 am
Forum: Technical/Operations
Topic: Horizontal Stabiliser Angle of the Bristol 188
Replies: 8
Views: 1400

Re: Horizontal Stabiliser Angle of the Bristol 188

Starlionblue wrote:
...At a guess, that would be to keep it out of the engine exhaust.


Agree.

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by Yikes!
Sun Apr 10, 2022 3:53 am
Forum: Technical/Operations
Topic: Location of data plate on Airbus aircraft
Replies: 17
Views: 2405

Re: Location of data plate on Airbus aircraft

rhesus wrote:
Where is the data plate (which identifies the aircraft's build number, year etc..) located on Airbus aircraft?

On Boeing aircraft it is located on the frame of the forward left entrance door.


Usually in the same place.

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by Yikes!
Fri Apr 08, 2022 2:44 am
Forum: Technical/Operations
Topic: airplane gliding
Replies: 43
Views: 5068

Re: airplane gliding

they say if an airplane experiences double engine failure, it won't just fall out of the sky (I find this hard to believe) they say because the airplane is gliding through the air if the airplane won't crash and will just glide through the air, then why do we hear on the news airplanes crash? First...

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by Yikes!
Fri Apr 08, 2022 2:35 am
Forum: Technical/Operations
Topic: Sahara dust over Europe
Replies: 6
Views: 2652

Re: Sahara dust over Europe

Those events emitting or spreading particles in the atmosphere do occur every now and then. Now one should ask the Brit MetOffice WHY they spread their conspirancy tales about alleged "invisible clouds of death". As a matter of fact, those Vottnajökull eruptions never ever caused any seri...

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by Yikes!
Fri Apr 08, 2022 2:28 am
Forum: Technical/Operations
Topic: Biz Jets: VNAV and Flight Level Change
Replies: 18
Views: 2439

Re: Biz Jets: VNAV and Flight Level Change

So i fly a couple different kind of business jets. We never use VNAV in the climb, very few departures have altitudes that we need to stop at or be under so we will use FLC or VS in the climb exclusively. Just set the power and climb, if there is a restriction we need to make we will just do it man...

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by Yikes!
Fri Apr 08, 2022 2:22 am
Forum: Technical/Operations
Topic: Curious: BA Takeoff Procedures - Gear Retraction
Replies: 39
Views: 5667

Re: Curious: BA Takeoff Procedures - Gear Retraction

Max auto brake is a takeoff setting, not used for landing Not to mention, minimum turnaround times are determined by brake energy efficiency on a subsequent rejected takeoff. For instance, if a takeoff and subsequent RTO occurs without sufficient brake cooling from a previous landing, brake efficie...

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by Yikes!
Mon Apr 04, 2022 2:39 am
Forum: Technical/Operations
Topic: Biz Jets: VNAV and Flight Level Change
Replies: 18
Views: 2439

Re: Biz Jets: VNAV and Flight Level Change

Is there ever a time when you would climb out flying a DP, and use VNAV and Flight Level Change together? I use VNAV to climb out and fly the DP with altitude constraints at each waypoint. If I want to climb straight up to what I have set in my altitude select window, I use Flight Level Change. No....

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by Yikes!
Sat Apr 02, 2022 1:02 am
Forum: Technical/Operations
Topic: music/movie in cockpit on (ultra) long haul?
Replies: 20
Views: 3939

Re: music/movie in cockpit on (ultra) long haul?

Obviously there's extremes on both sides. I flew with a Capt. on the 727 many years ago who wouldn't turn on the thunderstorm lights in cruise and forbid any reading. every leg in the middle of the night was horrible. Then on the other end, I came up front from my rest period, MD-11, to find the F/...

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by Yikes!
Wed Mar 30, 2022 9:54 pm
Forum: Technical/Operations
Topic: music/movie in cockpit on (ultra) long haul?
Replies: 20
Views: 3939

Re: music/movie in cockpit on (ultra) long haul?

This isn't a stupid question, at all. The top brands of headsets generally come with Bluetooth, and pilots of all sorts definitely do listen to music on them during non-sterile portions of flight - though that may not be strictly following the rules at some places. After that Delta MSP overflight, ...

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by Yikes!
Sat Mar 12, 2022 1:11 am
Forum: Technical/Operations
Topic: Do some jetliners need to level off after takeoff climb to build speed for flap retraction?
Replies: 20
Views: 4914

Re: Do some jetliners need to level off after takeoff climb to build speed for flap retraction?

I'm a little surprised that this discussion has not taken into account the segmented takeoff climb profiles or the oft times related noise abatement procedures. Modern airliners, by definition must meet certain criteria to be compliant with obstacle clearance after the takeoff segment has been compl...

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by Yikes!
Wed Feb 16, 2022 1:17 am
Forum: Technical/Operations
Topic: FAA Draft AC on Flight Path Management
Replies: 13
Views: 2332

Re: FAA Draft AC on Flight Path Management

They're right here. Pilots should absolutely have the proficiency to hand fly the entire flight. And they should he proficient with flying the aircraft with the automation and understand how they interact. Agree in principle but when considering associated workloads (auto thrust, navigation systems...

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by Yikes!
Tue Feb 08, 2022 1:50 am
Forum: Technical/Operations
Topic: Was [Is] it common to use only idle reverse thrust during landing runs in the DC-10 and L-1011 Tristar?
Replies: 17
Views: 2792

Re: Was [Is] it common to use only idle reverse thrust during landing runs in the DC-10 and L-1011 Tristar?

Most airports in the EU allow only idle reverse on any landing aircraft. Noise is a HUGE issue at most European airports to the point of requiring APU's to be shut down within 5 minutes of arriving on stand (gate). Becoming moreso in North America. Sorry, not specific to the thread title but incorpo...

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by Yikes!
Tue Feb 08, 2022 1:43 am
Forum: Technical/Operations
Topic: Engine Start Procedure. Which one first?
Replies: 48
Views: 4668

Re: Engine Start Procedure. Which one first?

What was the -7 like to operate? A good friend from the Reserves flew them for Ransome Airways. Actually, merged into PAA’s list, flew the A310 and finished at DL. First "airliner" developed by then deHavilland Canada. They asked Boeing to design the flight deck. It's very "old schoo...

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by Yikes!
Mon Feb 07, 2022 12:47 pm
Forum: Technical/Operations
Topic: Idle thrust - questions
Replies: 10
Views: 2151

Re: Idle thrust - questions

Can a propeller plane be configured for idle thrust by adjusting pitch of the blades? for ground startup? For descent? The turboprop I flew had PT-6 engines. During normal operation the governor adjusted prop pitch to maintain a specific RPM. Normally 1700rpm for takeoff and landing. In cruise a lo...

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by Yikes!
Mon Feb 07, 2022 12:33 pm
Forum: Technical/Operations
Topic: DE-icing while idle
Replies: 10
Views: 3167

Re: DE-icing while idle

The Saab 340 was a pain when it came to deicing...start up #2, deice the left side, start up #1, shut down #2, deice the right side, and then restart #2. "Hot" deicing on turboprops was never a favourite activity of mine. We did it extensively on the Boeings but with VERY strict communica...

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by Yikes!
Mon Feb 07, 2022 12:18 pm
Forum: Technical/Operations
Topic: Engine Start Procedure. Which one first?
Replies: 48
Views: 4668

Re: Engine Start Procedure. Which one first?

Haven't read all the responses above so am confident most questions have already been answered. From my years of twin engine turboprop ops in passenger situations, the #2 was started first if not left running while passengers were up/down loaded (which was done perfectly safely especially in norther...

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by Yikes!
Mon Feb 07, 2022 12:06 pm
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

Question, and a bit off topic, but would an airliner benefit from a split-rudder airbrake like the space shuttle had? Or would the complexity outweigh any benefits. The same could be said for the H-Stab. I doubt it as typical touchdown speeds for heavy jets is usually well below 200 KIAS. Touchdown...

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by Yikes!
Mon Feb 07, 2022 11:54 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

Are you sure the FAA would not allow the A380 to operate without thrust reversers? Do you have a source? The KC-46 is an FAA certified airplane and doesn’t have thrust reversers. Its amazing how one can still learn new things from time to time after so many years. Never knew the KC-46 has no revers...

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by Yikes!
Mon Feb 07, 2022 11:54 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

The C-17's capability to mimic a a falling manhole cover is impressive indeed. The 380's TR design is very simple. The only thing that stinks is getting the Safran spares to repair it. LOL! A good friend's Dad use to fly the DC-10 for KLM in the 1970's until he was forced to retire after Tenerife d...

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by Yikes!
Mon Feb 07, 2022 11:50 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

Yikes, the A380 is fan only reverse. It doesn’t block core exhaust. If you’re wondering why, commercial airliners rely primarily on their brakes to stop, with reverse thrust as a bonus - especially important on a contaminated runway, such as covered with snow. They’re usually at reverse idle ~ 60 k...

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by Yikes!
Thu Feb 03, 2022 12:32 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

Interesting, the military connection. I was amazed seeing Canada's RCAF C-17's, up close and personal, to see not only the fan thrust was "reversed" but the core thrust was blocked during landing ops. Given the ratio of 75/25 for fan/core thrust production on landing, that extra 25% block...

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by Yikes!
Tue Feb 01, 2022 10:39 pm
Forum: Technical/Operations
Topic: High power settings on the 727 during approach and landing due to drag for dirty condition or for quick spool up.
Replies: 18
Views: 2550

Re: High power settings on the 727 during approach and landing due to drag for dirty condition or for quick spool up.

Bear in mind also that the 727 had medium bypass jet engines vs the now, more common high bypass engines. Difference being, the high bypass fans have almost instantaneous thrust when accelerated vs the relatively low thrust increase of the lower bypass engine from its lower rpms.

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by Yikes!
Tue Feb 01, 2022 10:31 pm
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

The KC-46 might be FAA cert’d but I’m sure they’d make an exception as it’s a military only aircraft. Probably an agreement it never gets sold in the civilian market. Interesting, the military connection. I was amazed seeing Canada's RCAF C-17's, up close and personal, to see not only the fan thrus...

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by Yikes!
Wed Jan 26, 2022 1:37 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

Re: A380 Reverse Thrust On Landing

Great answers, makes sense. Thanks.

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by Yikes!
Tue Jan 25, 2022 3:20 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4244

A380 Reverse Thrust On Landing

It's been a while since my last 763 flight and so am somewhat out of the loop with up-to-date heavy jet ops. After watching a series of A380 landings, I noticed only engines 2 & 3 seemed to use reverse after landing - some with idle reverse; some with full on reverse. https://fb.watch/aL9wmMdvX4...

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by Yikes!
Tue Jan 18, 2022 3:04 am
Forum: Non-Aviation
Topic: Large Volcanic eruption near Tonga
Replies: 61
Views: 7099

Re: Large Volcanic eruption near Tonga

Tugger wrote:
OK, odd question but which aircraft are best able to fly in heavy ash conditions?

Tugg


None. Especially turbine powered aircraft.

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by Yikes!
Wed Jan 05, 2022 5:08 am
Forum: Technical/Operations
Topic: Dash 8 - Landing Gear down for ~ 10 mins after take-off
Replies: 12
Views: 2551

Re: Dash 8 - Landing Gear down for ~ 10 mins after take-off

There is a simpler answer, one that happened to me (8,000 hrs dh8 flying): They forgot to make the "Positive Rate" call, perhaps due to a distraction. KISS.

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by Yikes!
Tue Dec 14, 2021 3:03 pm
Forum: Technical/Operations
Topic: SOU approach pattern.
Replies: 21
Views: 1945

Re: SOU approach pattern.

SQ22 wrote:
Feel free to discuss IATA versus ICAO codes in a separate thread, but here it is off topic. Thanks.


LOL. Was wondering where the thread drift was taking us! GalaxyFlyer seems to have dragged the thread back to its original question!

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by Yikes!
Sat Dec 11, 2021 2:05 am
Forum: Technical/Operations
Topic: SOU approach pattern.
Replies: 21
Views: 1945

Re: SOU approach pattern.

First, it's best on this forum if you refer to your airport in its ICAO identifier (EGHI) rather than its IATA identifier (SOU) - it makes further comments so much easier to make! Why? In this case? I'm guessing that between the arrivals for Boscombe Down (MIL) (EGDM) and surrounding fields,Chichest...

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by Yikes!
Thu Dec 02, 2021 3:27 am
Forum: Technical/Operations
Topic: LAT/LONG - Most accurate unit measuring system in aviation?
Replies: 7
Views: 2193

Re: LAT/LONG - Most accurate unit measuring system in aviation?

Most commercial FMS inputs use Degrees, Minutes and decimal minutes (to one place). Our surveillance FMS used degrees, minutes and decimal minutes (to two places) i.e.N75 27.55 vice a commercial notation of N75 27.6

Hope that helps.

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by Yikes!
Thu Dec 02, 2021 3:17 am
Forum: Technical/Operations
Topic: 22 year old CFI
Replies: 15
Views: 3604

Re: 22 year old CFI

learning2fly: I don't post often but I've been a contributor on this forum since the 1990's. As a young pilot, airlines (regional, national, international) are more interested in your attitude and your work history rather than marks achieved on written tests or check rides that have been less than s...

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by Yikes!
Thu Oct 21, 2021 2:36 pm
Forum: Technical/Operations
Topic: Rationale for unusual SYD-YVR routing
Replies: 7
Views: 1584

Re: Rationale for unusual SYD-YVR routing

Also noticed it was an intersection takeoff from SYD. Not familiar with SYD ops, but are intersection takeoffs common there with ultra long haul flights? Sure, so long as the airport analysis supports the intersection departure. Pointless though if there is a weight restriction limiting aircraft pa...

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by Yikes!
Wed Jul 28, 2021 2:24 am
Forum: Technical/Operations
Topic: When did TWA start putting those big black stripe ice detectors on their aircraft wings?
Replies: 13
Views: 2337

Re: When did TWA start putting those big black stripe ice detectors on their aircraft wings?

In the mid 1980's, operators were looking for last minute ways to determine if their essential lifting surfaces were contaminated with frost/ice. Several operators discovered that dark surfaces were much easier used to determine if contamination existed. Examples - outboard roll spoilers on the Dash...

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by Yikes!
Wed Jul 28, 2021 2:15 am
Forum: Technical/Operations
Topic: Why do pilots do 'Wheelies' after landing?
Replies: 28
Views: 5849

Re: Why do pilots do 'Wheelies' after landing?

Seems to me the original question was nothing more than bait.

Anyone that has done a single hour of flight training knows the answer to the original question.

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by Yikes!
Thu Oct 29, 2020 4:49 pm
Forum: Technical/Operations
Topic: Landing Wheel Brake Activation
Replies: 30
Views: 2560

Re: Landing Wheel Brake Activation

Great topic and excellent answers. And welcome to the forum! I don't post much anymore unless something really interesting like this comes along. To add to the above comments, the most effective way to stop the aircraft is with brakes which is why the first action (after bringing thrust levers to id...

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by Yikes!
Mon Aug 17, 2020 8:56 am
Forum: Technical/Operations
Topic: ATC Command “Change my Frequency”
Replies: 28
Views: 4166

Re: ATC Command “Change my Frequency”

Thanks for confirming Notice also the controller did NOT say "change to my frequency..." Elimination of the words "to" and "for" is important not to confuse "two" and "four" which historically, has caused confusion, especially when English is a seco...

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by Yikes!
Wed Jul 29, 2020 1:29 am
Forum: Technical/Operations
Topic: Concorde longest transatlantic crossing due to unusual jet stream?
Replies: 13
Views: 2375

Re: Concorde longest transatlantic crossing due to unusual jet stream?

The standard of M2.0 cruise climb to TOD (top of descent) was its SOP (standard operating procedure). There was no "cruising" flight level. Its NAT tracks were pre-described. Other flights probably followed the same philosophy - cruise climb to TOD. As an anecdotal account, my crossing was...

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by Yikes!
Tue Jun 02, 2020 12:35 am
Forum: Technical/Operations
Topic: Landing wind direction
Replies: 28
Views: 3102

Re: Landing wind direction

Another consideration, given some aircraft that have a 20 knot tailwind for landing, is tire speed. Most heavy jets have tire maximum speed in excess of 230 kts ground speed. Where "on time performance" is so important, and a tailwind landing can accomplish this, the tailwind landing is an...

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by Yikes!
Thu May 21, 2020 4:58 am
Forum: Technical/Operations
Topic: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?
Replies: 9
Views: 3803

Re: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?

Let's not forget that when the ICAO proposed four-letter codes in 1947, the USA objected and said three-letter codes were sufficient... The ICAO system was devised before either were states and both were assigned to the PAC ICAO region. Indeed, the very first proposal was [national identification][...

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by Yikes!
Sun May 17, 2020 8:34 pm
Forum: Technical/Operations
Topic: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?
Replies: 9
Views: 3803

Re: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?

Alaska and Hawaii gained statehood under the US Constitution in 1959 - long after the initial ICAO "K" codes were compiled for the continental USA.

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by Yikes!
Wed May 13, 2020 1:27 am
Forum: Technical/Operations
Topic: HAL 3 - interesting routing today
Replies: 4
Views: 1367

Re: HAL 3 - interesting routing today

Routing probably due to prevailing winds. "Pressure pattern" flying term used in old days.

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by Yikes!
Wed Apr 29, 2020 3:12 am
Forum: Technical/Operations
Topic: Dead bolt
Replies: 9
Views: 2492

Re: Dead bolt

This should be addressed by your operator, NOT on a public forum. It’s a security procedure, thus closely held. What is it with so many people in this forum to ignore pure security related issues? I've been complaining of this for over 20 years on this forum which largely influenced my withdrawal f...

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by Yikes!
Thu Feb 20, 2020 1:26 am
Forum: Technical/Operations
Topic: (Hypothetical) Water injection on high-bypass engine
Replies: 34
Views: 4930

Re: (Hypothetical) Water injection on high-bypass engine

If a water-injection system were to be installed on an aircraft high-bypass turbofan, where would the injectors be placed? My guess is probably in the core, just after the low-pressure turbine, or in the bypass duct. Probably not injecting it into the combustion chamber, as cooling the flame would ...

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by Yikes!
Thu Jan 30, 2020 3:42 am
Forum: Technical/Operations
Topic: How to identify the length of a runway?
Replies: 19
Views: 2599

Re: How to identify the length of a runway?

LH707330 wrote:
The little black signs with the thousands of feet remaining should be pretty good.


Few, other than military fields, have these markers. Simply referring to your company's route manual will give you the information you need.

'

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by Yikes!
Mon Dec 16, 2019 3:56 am
Forum: Technical/Operations
Topic: Could a human stop an engine start?
Replies: 20
Views: 4260

Re: Could a human stop an engine start?

Don’t know if it’s a urban legend but I’ve heard it could be done with a PT-6 turbo prop, but I wouldn’t want to try it ! saw it done on a PT-6 once but it was a free turbine and not geared. It's not urban legend. I have done it. During extremely cold starts (< -40C), there is virtually no lubricat...

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by Yikes!
Wed Dec 11, 2019 10:13 pm
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3551

Re: How much power is needed for pressurization?

Judging by the difference resulting from turning the packs off to increase takeoff performance, in terms of engine power the answer is "not very much but enough to be significant". To illustrate, let's calculate performance taking off from a relatively short runway in terms of long haul w...

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by Yikes!
Wed Dec 11, 2019 10:11 pm
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3551

Re: How much power is needed for pressurization?

Judging by the difference resulting from turning the packs off to increase takeoff performance, in terms of engine power the answer is "not very much but enough to be significant". To illustrate, let's calculate performance taking off from a relatively short runway in terms of long haul w...

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by Yikes!
Wed Dec 11, 2019 3:07 am
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3551

Re: How much power is needed for pressurization?

Hard to answer as the question is kind of like "how many times do I need to breathe to stay alive?" Aircraft have generally been pressurized over the decades by excess bleed air drawn from the engine's compressor. The B787 is radically different in that it uses bleed air from onboard Auxil...

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