Search found 499 matches

  • 1
  • 2
  • 3
  • 4
  • 5
  • 10
by rjsampson
Thu Sep 23, 2021 10:05 pm
Forum: Technical/Operations
Topic: What makes up of the JT3D hush kit?
Replies: 12
Views: 1185

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 ...

Jump to post
by rjsampson
Mon Sep 13, 2021 10:02 pm
Forum: Technical/Operations
Topic: How did they decide where to put the VOR stations?
Replies: 30
Views: 2928

Re: How did they decide where to put the VOR stations?

How wonderful to have you here, N47!! You have summoned me good sir! My bread and butter is actually ground based nav systems so i should be able to shed some light. . In an earlier post, I asked a couple of questions about the stations themselves. Would you be so kind to explain? What accounts for ...

Jump to post
by rjsampson
Mon Sep 13, 2021 11:48 am
Forum: Technical/Operations
Topic: In revenue service, could the DC-10 land without using reverse thrust?
Replies: 22
Views: 2472

Re: In revenue service, could the DC-10 land without using reverse thrust?

3 installed, 2 required. One can be put on MEL. But, as Starlionblue indicated, the aircraft are certified to stop without their use. Can the AC be dispatched with either #1 or #3 inop? How many airliners have thrust reverse on MEL for dispatch? Or does this vary by the conditions for a given fligh...

Jump to post
by rjsampson
Mon Sep 06, 2021 7:58 pm
Forum: Technical/Operations
Topic: How did they decide where to put the VOR stations?
Replies: 30
Views: 2928

Re: How did they decide where to put the VOR stations?

Very slightly off topic: But what accounts for the different morphologies of various VOR installations? There’s a pretty big discrepancy in sizes. Take for example, the ATL VOR. It’s pretty large… but it’s entirely flat (ie, there isn’t a cone). And I’m not sure what they’re called: The ring of boxe...

Jump to post
by rjsampson
Mon Aug 23, 2021 8:49 pm
Forum: Technical/Operations
Topic: Does the DC-10 nose gear strut not meet the ground at a 90 degree angle?
Replies: 13
Views: 1927

Re: Does the DC-10 nose gear strut not meet the ground at a 90 degree angle?

battlegroup62 wrote:
And changing wheels without a jack. Not that anyone would ever use disobey an AMM.


Interesting! with all the weight on the wheels, how does that work exactly? Deflate the tire, replace with a deflated tire, re-inflate?

Jump to post
by rjsampson
Fri Aug 20, 2021 10:50 pm
Forum: Technical/Operations
Topic: Kudos & Gripes: What do pilots think about the design of overhead panels on their aircraft?
Replies: 9
Views: 1246

Re: Kudos & Gripes: What do pilots think about the design of overhead panels on their aircraft?

I flew the A320 for four years and I’m currently in my 737 type rating class/sims. The 737 overhead is as if someone took a box of switches and just threw them at the overhead and where they landed is where the switch went. The A320 was much easier to look at, same for the E175 which was a simpler ...

Jump to post
by rjsampson
Wed Aug 11, 2021 6:52 am
Forum: Travel, Polls & Preferences
Topic: Your expectations versus reality on your first flight experience [s]?
Replies: 13
Views: 1139

Re: Your expectations versus reality on your first flight experience [s]?

Pretty sure mine (at least the first I could remember) was on a Delta L-1011. Can't beat that! I remember looking out the window and being shocked at how quickly the cars looked like toys. ATL --> LGW. Like an above poster said: The sounds on takeoff always stayed with me! The gradual increase in fr...

Jump to post
by rjsampson
Wed Aug 11, 2021 12:29 am
Forum: Technical/Operations
Topic: Continuous explosion in jet engine during operation?
Replies: 21
Views: 2342

Re: Continuous explosion in jet engine during operation?

Wacker1000 wrote:
Some of this energy is converted into mechanical energy in the turbine and the rest goes to waste out of tailpipe.


Huh? Since you mentioned "tailpipe," I assume you're no longer referring to the blowtorch. Energy going out the tailpipe is hardly wasted: It provides THRUST.

Jump to post
by rjsampson
Tue Aug 10, 2021 12:10 am
Forum: Technical/Operations
Topic: Question For the Mechanics: Which Commercial Aircraft Have Been Easiest and Most Difficult For You to Work On?
Replies: 55
Views: 8785

Re: Question For the Mechanics: Which Commercial Aircraft Have Been Easiest and Most Difficult For You to Work On?

DISCLAIMER: I never worked on the aircraft beyond fueling it decades ago, I'm not an A&P, and am not personally qualified to speak to this... However, user twincommander commented on working on Learjets years ago. It's too good not to repost in this forum: If you weren't an alcoholic before you ...

Jump to post
by rjsampson
Thu Aug 05, 2021 6:34 am
Forum: Travel, Polls & Preferences
Topic: What is the greatest airport in the world?
Replies: 46
Views: 3453

Re: What is the greatest airport in the world?

Biased, but KSAN. At least when passing through Terminal 2 (renovations to T1 are coming!) Busiest single-runway airport in the world (Sorry, LGW doesn't count in my mind)... incredibly efficient, handles massive amounts of traffic for its size (and of course the approach to 27 is amazing). As soon ...

Jump to post
by rjsampson
Mon Jul 26, 2021 9:40 pm
Forum: Technical/Operations
Topic: Sinking feeling when leveling off on B757
Replies: 11
Views: 2190

Re: Sinking feeling when leveling off on B757

As you specifically referenced the 757, those aircraft can climb like a homesick angel, compared to virtually any other jetliner on which you'll fly. I suspect this exacerbates the effects mentioned above, thus making the sinking feeling more pronounced..

Jump to post
by rjsampson
Sun Jul 25, 2021 7:13 pm
Forum: Technical/Operations
Topic: Jetbridges
Replies: 6
Views: 1529

Re: Jetbridges

One of the things you'll notice upon entering the aircraft at the end of a jet bridge is an armature with a wheel on the end, resting on the AC fuselage. The wheel senses changes in height of the aircraft, as people and baggage change its weight while embarking and disembarking. In response, hydraul...

Jump to post
by rjsampson
Wed Jul 07, 2021 12:45 am
Forum: Technical/Operations
Topic: Cessna 208 Grand Caravan
Replies: 3
Views: 2688

Re: Cessna 208 Grand Caravan

No doubt info below may not answer all your questions, but I'm sure that buried in a couple of these links, there might be some helpful information: From Aircraft Cost Calculator: https://www.aircraftcostcalculator.com/AircraftOperatingCosts/3/Cessna+208+Caravan Aircraft Performance specs: https://w...

Jump to post
by rjsampson
Mon Jul 05, 2021 11:31 pm
Forum: Civil Aviation
Topic: Where can I find recently archived ATC communications?
Replies: 12
Views: 1041

Re: Where can I find recently archived ATC communications?

Indeed, the message could have been transmitted via ACARS. I wonder though, 10 minutes from touchdown: If there may have been something transmitted on the radio. I'd love to check. LiveATC has archives. You need to use their actual website and not their app to listen to them. Yeah, I always use the ...

Jump to post
by rjsampson
Mon Jul 05, 2021 4:36 pm
Forum: Civil Aviation
Topic: Where can I find recently archived ATC communications?
Replies: 12
Views: 1041

Where can I find recently archived ATC communications?

I had an extremely bizarre incident on a flight into SAN last week after which we were met at the jetway with police and paramedics. (It's a long story involving... a cat). I would love to have heard the communication with SoCal approach and tower on the issue. Obviously, liveatc.net easily provides...

Jump to post
by rjsampson
Sun Jul 04, 2021 12:28 am
Forum: Technical/Operations
Topic: How much does a typical airline pilot know about his/her aircraft?
Replies: 22
Views: 4122

Re: How much does a typical airline pilot know about his/her aircraft?

It's like the updated sharklets on the A350. It has no material effect on how we operate the aircraft, so it isn't really an important piece of knowledge. I never knew that Airbus updated the Sharklets on the A350. How do the new Sharklets differ from the first A350 to enter service? Do they apprec...

Jump to post
by rjsampson
Thu Jul 01, 2021 12:24 am
Forum: Technical/Operations
Topic: Flying cars and risks (also bmw powers a flying car)
Replies: 4
Views: 1045

Re: Flying cars and risks (also bmw powers a flying car)

boacvc10 wrote:
Ok, I may be mistaken somewhere but is the age of flying cars near us?


No. This "flying car" is... (wait for it)... an airplane.

Jump to post
by rjsampson
Mon Jun 28, 2021 9:41 pm
Forum: Technical/Operations
Topic: Control tower in uncontrolled airspace
Replies: 18
Views: 1748

Re: Control tower in uncontrolled airspace

Since we're on the topic of uncrontrolled airspace, towered/non-towered, etc.

I figured we could all use a refresher on best Traffic Pattern practices at non-towered fields. In advance: You're welcome.

    https://www.youtube.com/watch?v=PMK6GRrMCdI

Enjoy.

Jump to post
by rjsampson
Tue Jun 15, 2021 7:46 am
Forum: Technical/Operations
Topic: (Warning) Question about disturbing or morbid topic
Replies: 7
Views: 4557

Re: (Warning) Question about disturbing or morbid topic

This was a tragic CFIT (Controlled Flight Into Terrain) incident. Doug Feith is a friend of a family member (an accident investigator that had been featured prominently in the media throughout the 90's). From what he's said: the unfortunate pictures to which you were exposed most likely reflected th...

Jump to post
by rjsampson
Wed Jun 02, 2021 4:27 am
Forum: Civil Aviation
Topic: Why is RR building History's largest aircraft engine?
Replies: 1
Views: 1685

Why is RR building History's largest aircraft engine?

[apologies if this has been previously discussed; if so, please re-direct me to the thread] Like many of you: I've been following the RR Ultrafan programme for years. I suppose the news is a month old, but they've begun construction on the world's largest aircraft engine (fan diameter 140" :o )...

Jump to post
by rjsampson
Tue May 25, 2021 6:42 am
Forum: Technical/Operations
Topic: Is the UDF Engine Back from the Dead?
Replies: 36
Views: 8092

Re: Is the UDF Engine Back from the Dead?

Assuming this technology matures to the level to which Safran aspires... In the US at least: The flying public seems averse to seeing moving parts outside of the aircraft (hence one of the reasons 121 turboprop operations are all but dead for short hops, despite their economic advantages over RJs). ...

Jump to post
by rjsampson
Tue May 25, 2021 6:25 am
Forum: Technical/Operations
Topic: How common is significant over fueling?
Replies: 15
Views: 2973

Re: How common is significant over fueling?

Result: Too heavy for landing. No de-fuel option available, so we refiled for FL290 i.s.o 360 and spent around an hour in the cruise with spoilers extended. It happens. :shock: You were burning off excess gas by hitting the brakes for an hour, while cruising at FL290? Yikes. Oh man... I'm guessing ...

Jump to post
by rjsampson
Thu Apr 15, 2021 11:09 pm
Forum: Civil Aviation
Topic: UA flight from Savannah, GA to SFO in... a 77W??
Replies: 7
Views: 3367

Re: UA flight from Savannah, GA to SFO in... a 77W??

Ahhh... Missed the airport identifier. That explains it!

Jump to post
by rjsampson
Thu Apr 15, 2021 10:55 pm
Forum: Civil Aviation
Topic: UA flight from Savannah, GA to SFO in... a 77W??
Replies: 7
Views: 3367

UA flight from Savannah, GA to SFO in... a 77W??

https://www.flightradar24.com/UAL2588/27690e52
-->

Came across this on FR24.

Can anyone provide insight as to why such a large AC is being utilized for such a thin, domestic route?

https://www.flightradar24.com/UAL2588/27690e52

Jump to post
by rjsampson
Mon Mar 29, 2021 9:13 pm
Forum: Travel, Polls & Preferences
Topic: Examples of Where Older Versions of Aeroplanes Outlive Newer Versions
Replies: 26
Views: 3205

Re: Examples of Where Older Versions of Aeroplanes Outlive Newer Versions

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
by rjsampson
Mon Mar 29, 2021 9:07 pm
Forum: Technical/Operations
Topic: That PW1000 howl
Replies: 11
Views: 3079

Re: That PW1000 howl

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
by rjsampson
Mon Mar 08, 2021 9:51 pm
Forum: Technical/Operations
Topic: A220 Howling Sound on Approach
Replies: 19
Views: 5425

Re: A220 Howling Sound on Approach

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
by rjsampson
Sat Feb 27, 2021 5:37 pm
Forum: Technical/Operations
Topic: Fuel flow: Same N1/EPR at different altitudes?
Replies: 9
Views: 1390

Re: Fuel flow: Same N1/EPR at different altitudes?

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
by rjsampson
Fri Feb 26, 2021 10:59 am
Forum: Technical/Operations
Topic: Fuel flow: Same N1/EPR at different altitudes?
Replies: 9
Views: 1390

Fuel flow: Same N1/EPR at different altitudes?

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
by rjsampson
Thu Feb 18, 2021 8:18 am
Forum: Technical/Operations
Topic: Do ground vehicles in airports run on jet fuel or regular diesel?
Replies: 31
Views: 4065

Re: Do ground vehicles in airports run on jet fuel or regular diesel?

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
by rjsampson
Tue Feb 16, 2021 11:09 pm
Forum: Technical/Operations
Topic: Do ground vehicles in airports run on jet fuel or regular diesel?
Replies: 31
Views: 4065

Re: Do ground vehicles in airports run on jet fuel or regular diesel?

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
by rjsampson
Sat Jan 30, 2021 9:16 am
Forum: Technical/Operations
Topic: A220-100 is the new 757-200
Replies: 47
Views: 5382

Re: A220-100 is the new 757-200

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
by rjsampson
Sat Jan 30, 2021 7:35 am
Forum: Technical/Operations
Topic: A220-100 is the new 757-200
Replies: 47
Views: 5382

Re: A220-100 is the new 757-200

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
by rjsampson
Sat Jan 30, 2021 2:11 am
Forum: Technical/Operations
Topic: A220-100 is the new 757-200
Replies: 47
Views: 5382

Re: A220-100 is the new 757-200

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
by rjsampson
Thu Jan 28, 2021 11:34 am
Forum: Travel, Polls & Preferences
Topic: New Queen of the Skies
Replies: 7
Views: 1265

Re: New Queen of the Skies

I vote the A350 as Princess of the skies

Jump to post
by rjsampson
Thu Jan 28, 2021 11:00 am
Forum: Technical/Operations
Topic: A220-100 is the new 757-200
Replies: 47
Views: 5382

Re: A220-100 is the new 757-200

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
by rjsampson
Wed Dec 09, 2020 11:28 pm
Forum: Technical/Operations
Topic: Did airline pilots have training to sound like Chuck Yeager?
Replies: 19
Views: 2931

Re: Did airline pilots have training to sound like Chuck Yeager?

BREAKING:

It was announced that Chuck Yeager passed away yesterday. :o

RIP to an incredible hero and airman.

Jump to post
by rjsampson
Mon Nov 30, 2020 3:44 am
Forum: Travel, Polls & Preferences
Topic: Travel Restrictions Under a Biden Administration
Replies: 24
Views: 3478

Re: Travel Restrictions Under a Biden Administration

https://www.youtube.com/watch?v=byW1GExQB84

What do you guys think?
-->

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:

https://www.youtube.com/watch?v=byW1GExQB84

What do you guys think?

Jump to post
by rjsampson
Fri Nov 27, 2020 8:23 pm
Forum: Travel, Polls & Preferences
Topic: Spirit Airlines A320Neo routes?
Replies: 12
Views: 2584

Re: Spirit Airlines A320Neo routes?

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
by rjsampson
Fri Nov 27, 2020 7:58 pm
Forum: Travel, Polls & Preferences
Topic: Travel Restrictions Under a Biden Administration
Replies: 24
Views: 3478

Re: Travel Restrictions Under a Biden Administration

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
by rjsampson
Thu Nov 19, 2020 5:32 pm
Forum: Technical/Operations
Topic: San Diego (SAN) Runway touchdown zone lights on 27
Replies: 6
Views: 2030

Re: San Diego (SAN) Runway touchdown zone lights on 27

CosmicCruiser wrote:
Didn't 27 originally have an ILS until the parking garage was built?


No, 27 never had an ILS. The terrain has always prevented that from being implemented. Incidentally, the parking garage has less effect on the steeper glidepath than the terrain itself.

Jump to post
by rjsampson
Thu Nov 19, 2020 2:21 am
Forum: Technical/Operations
Topic: San Diego (SAN) Runway touchdown zone lights on 27
Replies: 6
Views: 2030

San Diego (SAN) Runway touchdown zone lights on 27

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
by rjsampson
Mon Nov 09, 2020 6:48 pm
Forum: Technical/Operations
Topic: What's the procedure for runway incursion after the touchdown?
Replies: 12
Views: 2134

Re: What's the procedure for runway incursion after the touchdown?

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
by rjsampson
Fri Nov 06, 2020 9:52 am
Forum: Technical/Operations
Topic: Why do some DC-9s have this extension piece on the cowling?
Replies: 17
Views: 3374

Re: Why do some DC-9s have this extension piece on the cowling?

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
by rjsampson
Fri Nov 06, 2020 9:34 am
Forum: Travel, Polls & Preferences
Topic: Your own all Premium-Class airline :D - Routes/Equipment?
Replies: 7
Views: 1126

Re: Your own all Premium-Class airline :D - Routes/Equipment?

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
by rjsampson
Sat Oct 10, 2020 5:11 pm
Forum: Technical/Operations
Topic: Hardstand gates as an advantage?
Replies: 30
Views: 3929

Re: Hardstand gates as an advantage?

In the US, I would also suggest that Security strongly plays a role in airstands being rare.

Jump to post
by rjsampson
Thu Oct 01, 2020 4:05 pm
Forum: Technical/Operations
Topic: Should Boeing and Airbus go for twin wheel main landing gears on their next-gen 737/A320s?
Replies: 11
Views: 3058

Re: Should Boeing and Airbus go for twin wheel main landing gears on their next-gen 737/A320s?

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
by rjsampson
Tue Sep 22, 2020 1:14 am
Forum: Technical/Operations
Topic: 757 vs. 767 lights
Replies: 15
Views: 3537

Re: 757 vs. 767 lights

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
by rjsampson
Mon Sep 21, 2020 6:21 pm
Forum: Technical/Operations
Topic: 757 vs. 767 lights
Replies: 15
Views: 3537

Re: 757 vs. 767 lights

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
by rjsampson
Thu Sep 10, 2020 7:53 pm
Forum: Technical/Operations
Topic: Do all aircraft(heavier than a set weight) have a Level-D motion sim?
Replies: 12
Views: 1278

Re: Do all aircraft(heavier than a set weight) have a Level-D motion sim?

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
  • 1
  • 2
  • 3
  • 4
  • 5
  • 10