Another one, the DC-9 and MD-80 outlived the MD-90. Who knows, they might even outlive the 717. Given the nature of the remaining DC-9 and MD-80 operators (military, third world and embargoed countries), it is anyone's guess if the DC-9 or MD-80 will be the last to retire). No chance of any of the ...Jump to post
It is the harmonics of the associated pressure changes within the combustor structure during the phase from idle to higher thrust settings that cause the distinctive sound you are hearing. :checkmark: Yep, this was brought up a few weeks ago and someone linked to a podcast, towards the end of which...Jump to post
Back to OP's topic of the A220 howling sound... It is most certainly from the engines. https://twitter.com/flightradar24/status/1335965511293825026?s=21 Podcast on the noise. For those of you without the time to listen to the 45 minute podcast: The explanation comes from P&W's VP and General Man...Jump to post
Makes total sense. On aircraft with moving thrust levers (ie, not-airbus): Would the thrust lever be in the same position during a T/O run at 85% N1, as it would be for 85% at FL370? Would it be lower?Jump to post
Gents, On takeoff: If say, an 350 is pushing out (say, 85% N1), ~80 pounds of thrust per engine... ...and is at 85% N1 at cruise: Is the fuel flow appreciably different, while pushing back far less thrust? [Disclaim the multitude of variables. Stick with ISA at TO, FL370 at cruise, etc. etc.]... jus...Jump to post
I'm not sure if this is still a thing, but years ago there was a lot of talk in the GA market of developing aircraft that run on Diesel (purportedly they were more efficient than their AvGas counterparts). One of the chief benefits -- or so it was said -- was that these aircraft could run just as w...Jump to post
I'm not sure if this is still a thing, but years ago there was a lot of talk in the GA market of developing aircraft that run on Diesel (purportedly they were more efficient than their AvGas counterparts). One of the chief benefits -- or so it was said -- was that these aircraft could run just as we...Jump to post
The Learjet 31 (and earlier 23) takes the cake for civilian aircraft, and that includes the Concorde. Apparently, flying those early Learjets wasn't worth the T/W ratio. There's a user on this forum, tb727. His color commentary is quite... interesting (as are the hundred+ posts that followed) https...Jump to post
How “lightly” is lightly? How much of a derate applied? Is “full” thrust full or at reduced setting or full at the derate? Remember “full” means at the rating, so you can have “full” derate 1 or wash out the derates. Is the 757 so light, the TO is based on reduced thrust on the derate power. And no...Jump to post
It bears repeating, but a heavy B739 at full thrust will accelerate and climb more strongly, in some cases, than a lightly loaded 752 on a derated takeoff. Not a pilot, but I think this statement is correct. Maybe Well I would think "definitely," as the same could be said when comparing T...Jump to post
I remember being a passenger departing from KATL on a NW 75 back in the day. However they crunched their speeds up front: I was in a state of surprise, and inadvertently blurted "Holy @$#@!" out loud as it seemed that from spool to Vr... felt like mere seconds, jumping off a long, dry runw...Jump to post
It was announced that Chuck Yeager passed away yesterday.
RIP to an incredible hero and airman.
I know a lot of us are big fans of Wendover Productions. In addition to being an AvGeek: He's pretty spot on in his videos. He recently did one of vaccine logistics. Have a look at this:
What do you guys think?
I was surprised when I flew in one of Spirit's NEO that the interiors looked identical to the CEO. I was under the impression that NEOs roll out with numerous cabin improvements, standard. Did Spirit specifically revert them to the older style, to maintain a common product?Jump to post
I would predict that by next summer, we will see most of the restrictions gone , Doc, I know you're a physician, but I fear that your timeline is extremely optimistic. To get to a point to where most restrictions are gone, as you say it will be guided by experts, and specifically by the number of c...Jump to post
CosmicCruiser wrote:Didn't 27 originally have an ILS until the parking garage was built?
The approach to runway 27 is non-precision (LOC only). However, is touchdown zone lighting. I thought you'd only find this lighting on precision approaches. Is that correct? If so, why does 27 have such lighting?Jump to post
The landing crew (IIRC the landing aircraft was a 737 classic) had to use the tiller at high speed to avoid the collision. I'm guessing it would vary by aircraft type (or perhaps I misunderstood something from a "steering" thread, and this isn't a thing at all): Don't some types lock out ...Jump to post
Looks like a hush kit to me, a modification for sound reduction. It makes the engines more quiet. The DC-9 was not equipped with hush kits by default, but they've later been retrofitted with them. :checkmark: I'd have to dig up some pictures I took looking up such retrofitted engines' tailpipes but...Jump to post
Sounds like what you really need is an anonymous old Il-76 or An-12. Also has the upside that it is easier to fit a stripper pole. ^^^ This :lol: VSMUT: I literally choked on my food when I read your response . Thank you for the absolute funniest post I've read on a.net in years. I'm sure the OP ha...Jump to post
IRC, the highest wheel loading ever was on the 727-200. But my memory is fuzzy... You are absolutely correct. I'll have to dig up where I did the charts for this on another forum (across all weights -- still the highest wheel loading of all jetliners) to validate this for you. It began with me look...Jump to post
Max, seven47 (or anyone else with the experience): Given that you have flown both types: Both the 757 and 767 are truly outstanding aircraft and a delight to operate I currently fly the 757F and the 767F I'm curious if you have any thoughts on the question I asked earlier: A 75/76 driver once told m...Jump to post
It's been years since I've heard this, but a 75/76 driver once told me that the yoke feel was different between the two. If I remember correctly, he said the 75 was "looser," requiring more range of deflection compared to the 76, which felt "tighter" to him. Can anyone confirm/de...Jump to post
I'm curious if anyone knows the answer posed in the OP's subject line: Do all aircraft (heavier than a set weight) have a Level-D motion sim? I would imagine part of that answer would be dictated by a point where the cost of training in the actual aircraft exceeds the cost of a sim. Does anyone have...Jump to post
Oh man, the hearing I have left picked up those darn B pumps that trashed my hearing to begin with in that video lol. It's gone full circle. I seem to recall you were coming off the Lear 2x, and then were subsequently exposed to the B pumps? Yikes. At least you have an excuse for not hearing your w...Jump to post
Not to mention Pilot's Unions.... Good luck pushing Single Pilot operations through the multitude of those and their nuanced contracts. I'm not a knee-jerk reactionary to changes (of course I'd fly on the MAX when it re-enters service). I honestly would never fly on a single-pilot jetliner. Not 10, ...Jump to post
Indeed. We are likely to see single pilot large airliners in the next 10-15 years. Arch: You are one of the absolute best contributors to these forums. Your experience, insight, and selflessness in contributing to so many threads... We're lucky for your consistent on-point knowledge. But *large* ai...Jump to post
Noticed this morning all takeoffs and landings were going East.
There was an ever-so-slight marine layer; I briefly looked at a METAR, and it sure looked like solid VFR. Winds seemed calm.
I suppose those more qualified would be able to determine conditions.
- A350: There are only two hydraulic systems, green and yellow. Both systems have two pumps, one in each engine. So if you lose an engine you retain all hydraulics. Backup hydraulics are supplied by self-contained hydraulic actuators, so there is no third "primary" system. The RAT does no...Jump to post
So, specifically, what knowledge was gained from the design and manufacture of the Airbus A380 that would not have been achieved had the aircraft not been produced? And which specific aircraft, and particular systems, are using that knowledge? e38 I was wondering the same thing. Can anyone articula...Jump to post
About 4 months ago, I saw an L-1011 at MCI. Does anyone know which aircraft that was? Is it airworthy?Jump to post
There's a YouTube video using LiveATC in which an airliner with severe controlability issues in which it was escorted by scrambled F-16 fighters throughout its (ultimately successful) landing. It's late where I am, so I'll get to it tomorrow.Jump to post
I flew the Carvair (Interocean), during a 9 month stint in Congo, circa 1963. Actually a pretty nice aircraft for its time. Sort of a 747 with props. Wow, Bravo... What I wouldn't give to buy you some beers and just ask about your career! Have you ever considered writing a book? I guarantee you you...Jump to post
A few things at play here, the 77L for DL had Goodyear specialize tires to increase the tyre speed limit slightly. The only time we could say the 359 might proverbially “struggle” is for a few weeks in the winter. But the rest of the time I agree it will preform better. That's interesting... I beli...Jump to post
The turquoise color is inherent in the CTi formulation so... yes, these will be in the production engines and no, multiple colors would not be an option, nor is this for marketing purposes. It's funny, because I was curious about this a couple of years ago too. So I tried to reach out to multiple RR...Jump to post
Florianopolis wrote:Airplanes sink into "hard" pavement all the time, too. Asphalt in particular.
I hate to be the guy to ask the "beer can" question. Some of my chemical engineer friends (not in the aviation industry) insist that scrapped "aviation grade" aluminium is never destined to hold beer. That said: A few have suggested otherwise. Is this just a euphamism? This is a ...Jump to post
jghealey, As has been discussed literally millions of times on this forum and elsewhere, passengers will have forgotten about the Max by the time it returns to service , especially now after covid-19 which will have been a huge distraction. It's already over a year since the max was properly in the ...Jump to post
Friends, Have a look at a passenger view of a JAL 787 taking off from SAN. After thrust is set, the flaperon fully extends, goes to neutral, deflects upwards, and cycles back down: https://youtu.be/nY-2Sp5YPEY?t=85 I've seen this takeoff from an external video -- and this flaperon movement is the sa...Jump to post
Hope everyone is safe and doing well. Was just curious about what's going on in the skies of the US. I noticed that several arrivals into JFK today were in pretty substantial holding patterns for landing. Given how incredibly sparse the skies are: Why would this be necessary? I saw several aircraft ...Jump to post
The Super 27 mod did something similar. Valsan swapped out the #1 and #3 with larger JT8D-219 but kept the little 8 in the #2 slot.. The -219 gives a 4000 lb thrust boost. A FedEx buddy of mine who flew the Super 27 told me that extra 4,000 lb wasn't available on takeoff (where Stage III is enforce...Jump to post
Actually I believe the PW 2000 series has a little better fuel specifics than the RR aircraft BUT....that is offset be some other maintenance/reliabilty issues. Both are good engines. A far as Trump buying a RR product, I suspect that is more of his ego than anything else. :checkmark: Confirmed. He...Jump to post
In regards to auto brakes are they always used or is there a place and time for using manual braking? I'm interested to know this, too. I was surprised when Starlion mentioned that the autobrakes presumably provide less force when reverse thrust is deployed. In said example of needing more stopping...Jump to post
However, I meant there are passenger aircraft flying around with no passengers, carrying belly cargo only. That answers my question Arch, and thank you. From what I've gathered on these forums: Aircraft full of people and their bags under the floor (especially longhaul) have maybe 2-3% revenue gene...Jump to post
OK... GA and Galaxy answered my question pretty effectively, I do have another. Perhaps Galaxy and/or others may have insight into this. I cannot find a decent explanation on Google. What was the impetus for Lockheed to get back into the civil commercial airliner business with the L1011? If I recall...Jump to post
Starlionblue wrote:We've been doing this for weeks. Belly cargo only though.