Search found 209 matches

by StereoTechque
Thu Jan 13, 2022 5:41 am
Forum: Technical/Operations
Topic: Airbus WISE vs TFU vs ISI
Replies: 2
Views: 704

Re: Airbus WISE vs TFU vs ISI

ISI : Mainly for operators, there is no particular template. TFU: Made to describe a specific technical issue, from Background description to Final Solution (with mitigation and recommendations inbetween) Thanks LD!! Just came across this text from one of the Airbus OIT- 3.2 FEATURES SPECIFIC TO TF...

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by StereoTechque
Thu Jan 13, 2022 5:35 am
Forum: Technical/Operations
Topic: A321LR flight level?
Replies: 9
Views: 1721

Re: A321LR flight level?

A321 LR like the A320 family is maxxed out at FL390 per the AFM.
Unsure about the XLR though.

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by StereoTechque
Thu Jan 06, 2022 2:39 pm
Forum: Technical/Operations
Topic: Airbus WISE vs TFU vs ISI
Replies: 2
Views: 704

Airbus WISE vs TFU vs ISI

Im having difficulty understanding difference between all three Airbus Technical documentation. Pros out here kindly elaborate.

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by StereoTechque
Wed Dec 08, 2021 6:28 am
Forum: Technical/Operations
Topic: Freight Handling on the ATR series vs other turboprop Freighters
Replies: 4
Views: 1428

Re: Freight Handling on the ATR series vs other turboprop Freighters

It’s a neat little area to “hang out” in lol. Haha..The ATR Aft cargo compartment can also be a good area to hang out depending on the situation.. It is also noteworthy that carrying DGs is prohibited on the Pax ATR Cargo compartment as although physically separated, they fall in same level and onl...

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by StereoTechque
Sat Dec 04, 2021 9:29 am
Forum: Technical/Operations
Topic: Teal Color Inside A320neo Pratt & Whitney Engines
Replies: 27
Views: 5456

Re: Teal Color Inside A320neo Pratt & Whitney Engines

Horstroad wrote:

No It's not :P

Perfect!
Thanks for the pic.
The black inlet cowl also has visible holes on surface for Accoustic dampening.

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by StereoTechque
Fri Dec 03, 2021 4:20 am
Forum: Technical/Operations
Topic: Teal Color Inside A320neo Pratt & Whitney Engines
Replies: 27
Views: 5456

Re: Teal Color Inside A320neo Pratt & Whitney Engines

airportugal310 wrote:
I believe the official term is "abradable lining/liner" but could be wrong


You are absolutely right. Also called Attrition liner.
Pretty much present on all Turbofans but much more evident on IAE/PWs.

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by StereoTechque
Sun Nov 14, 2021 1:58 am
Forum: Technical/Operations
Topic: Why fuel driven actuators?
Replies: 14
Views: 1831

Re: Why fuel driven actuators?

Redbellyguppy wrote:
I once flew an aircraft that had pneumatically actuated thrust reversers. There’s an infinite supply of air, too, in an engine that is running.


At the cost of engine efficiency of course.

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by StereoTechque
Wed Oct 27, 2021 6:18 pm
Forum: Technical/Operations
Topic: Duration of 747 Hydraulic Pressure Reduction?
Replies: 7
Views: 812

Re: Duration of 747 Hydraulic Pressure Reduction?

The answer to this is it depends upon the specific aircraft model and which surfaces. The 744 flaps, as referenced in the OP would be a great start. Flaps generally are position specific ie. have discrete outputs per the Flap lever Position in the Flight deck. Primary control surfaces like the Aile...

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by StereoTechque
Tue Oct 19, 2021 1:41 am
Forum: Technical/Operations
Topic: Any opinions on hydraulic fuses?
Replies: 4
Views: 839

Re: Any opinions on hydraulic fuses?

A couple of tragedies occurred when all hydraulic fluid was lost. Japan Air 747 and United DC-10. Do all commercial types use hydraulic fuses or just some? What other systems are there to prevent the complete loss of hydraulic fluid after a catastrophic failure? Every Hydraulic system on an Aircraf...

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by StereoTechque
Thu Sep 30, 2021 7:00 am
Forum: Technical/Operations
Topic: A320 Idle Speed
Replies: 11
Views: 1504

Re: A320 Idle Speed

Does an A320 With V2500 idle at a different speed with just the left engine running (single engine taxi)? Earlier procedure on A320 was to start Engine 2 first as it is directly connected to Yellow EDP which supplies the Parking Brake pressure. Now the procedure has been revised to simplify procedu...

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by StereoTechque
Sun Aug 22, 2021 5:04 pm
Forum: Technical/Operations
Topic: Does the DC-10 nose gear strut not meet the ground at a 90 degree angle?
Replies: 13
Views: 2308

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

Stranger still was the Lockheed Constellation, which as well as having a forward angled nose gear, had considerable 'camber' on the nose wheel axles - meaning that the wheels were angled so that the bottoms of the tires where closer together than the tops. Perhaps this was to counteract to some ext...

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by StereoTechque
Sun Aug 22, 2021 1:18 pm
Forum: Technical/Operations
Topic: Does the DC-10 nose gear strut not meet the ground at a 90 degree angle?
Replies: 13
Views: 2308

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

Problem with the canted nose gear design is it completely lifts the outboard nose wheel off the ground in a tight turn while taxiing, now you’re steering with just one wheel, not so good, especially when you have a wet surface Correct. Tight turns mostly are done at lower speeds. A320 Family can al...

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by StereoTechque
Sun Aug 22, 2021 9:55 am
Forum: Technical/Operations
Topic: Are the engines used in repurposed jetliners damaged by the smoke particulates they ingest?
Replies: 3
Views: 1078

Re: Are the engines used in repurposed jetliners damaged by the smoke particulates they ingest?

Adding to above replies Volcanic ash is also very abrasive which resulted in a flame out of engine long back. Forest smoke may be chemically toxic in the long run but a few seconds of ingestion is pretty okay for the engine. The Aircrafts may be shutting off the bleed when they fly over a smoke clou...

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by StereoTechque
Sun Jul 18, 2021 10:18 am
Forum: Technical/Operations
Topic: Protective corrosion coatings and aerodynamics
Replies: 7
Views: 1071

Re: Protective corrosion coatings and aerodynamics

gregorygoodwin wrote:
.
Gregory


That was a fantastic read. Thank you for your inputs.

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by StereoTechque
Tue Jun 22, 2021 6:23 am
Forum: Technical/Operations
Topic: APU Usage
Replies: 18
Views: 3629

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? Actually they do. You just cant notice it when it is supplying High Volume Air as it becomes inflated. However old hoses do leak from areas whe...

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by StereoTechque
Wed May 19, 2021 7:23 pm
Forum: Technical/Operations
Topic: APU Inflight start on Battery
Replies: 8
Views: 2407

Re: APU Inflight start on Battery

Florianopolis wrote:
Could it be because the battery has less juice at lower temperatures?


Normally batteries are located in the Avionics bay which is temperature and pressure controlled. It is not exposed to ambient air. However they are ventilated to ambient by a small vent hole.

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by StereoTechque
Tue May 18, 2021 9:02 am
Forum: Technical/Operations
Topic: APU Inflight start on Battery
Replies: 8
Views: 2407

Re: APU Inflight start on Battery

Thank you all. Doubt cleared.

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by StereoTechque
Tue May 18, 2021 2:07 am
Forum: Technical/Operations
Topic: APU Inflight start on Battery
Replies: 8
Views: 2407

Re: APU Inflight start on Battery

Alright..So in that case the self sustaining speed of APU will increase as we go higher.

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by StereoTechque
Mon May 17, 2021 5:39 pm
Forum: Technical/Operations
Topic: APU Inflight start on Battery
Replies: 8
Views: 2407

APU Inflight start on Battery

APU installed on the A320 has a FL restriction of FL250 when only starting with batteries. However normally if TRU assisted then it can be started upto service ceiling.

What is the reason behind this?

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by StereoTechque
Sun Apr 04, 2021 5:40 am
Forum: Technical/Operations
Topic: That PW1000 howl
Replies: 11
Views: 3468

Re: That PW1000 howl

r6russian wrote:
oldannyboy wrote:
Oh and the whine of a spooling up RB211 naturally!!! .

everybody knows that theres no better sound in aviation than the RB211 spooling up


RB211 spool up is music for the Aviator Soul.
Even the IAEs on the A320 have a little of a sweet note.It was more evident on the older A1s.

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by StereoTechque
Fri Mar 26, 2021 7:15 am
Forum: Technical/Operations
Topic: Different manufacturers for jet engines #1 vs. #2
Replies: 25
Views: 4916

Re: Different manufacturers for jet engines #1 vs. #2

Engine manufacturers sometimes test their engines by replacing one of the regular engines on a quad. That's strictly for test purposes only, though. 0744433 Nice center gear, there... Hehe, Very observant! Looks like Airbus permanently deactivated Centre gear on this one as this bird might never lo...

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by StereoTechque
Mon Mar 08, 2021 10:40 am
Forum: Technical/Operations
Topic: Airbus Wing Hook Symbol
Replies: 2
Views: 1348

Re: Airbus Wing Hook Symbol

https://imgur.com/Y0Spn08

Hoist point attachment.
-->

2395511047 wrote:
Does anyone know the meaning of this "hook" "2" symbol found on an A320 (and other airbus models) wing and sometimes vertical stabilizer?

Thanks!

https://imgur.com/Y0Spn08

Hoist point attachment.

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by StereoTechque
Sat Feb 20, 2021 3:13 am
Forum: Technical/Operations
Topic: Is it true that when flying air pressure won't allow the cabin door to open?
Replies: 22
Views: 3364

Re: Is it true that when flying air pressure won't allow the cabin door to open?

Some cargo doors are outward opening plug type. The aft small cargo door (70") on the B777 for example is an outward opening plug type door (and I'm pretty sure it's the same on the B767). The forward large cargo door (106") and aft large cargo door (106", if installed) are non-plug ...

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by StereoTechque
Thu Jul 16, 2020 5:57 am
Forum: Technical/Operations
Topic: A320 Family Center Fuel Tank system changes?
Replies: 5
Views: 1814

Re: A320 Family Center Fuel Tank system changes?

What about the outer wing tanks? Do the post-2014 A319/A320 and A319neo/A320neo aircraft also have a single wing tank like the A321s? Single wing tank like the 321 would have been great. The 321 wing has a slightly thicker skin crossection and construction hence it could get away with No Outer Tank...

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by StereoTechque
Thu Jun 11, 2020 4:49 pm
Forum: Technical/Operations
Topic: Electric taxiing tug?
Replies: 11
Views: 3171

Re: Electric taxiing tug?

I would think that, while your idea might sound interesting, there are likely the following drawbacks: - Aircraft compatibility. Traditional tug need to connect to different aircraft by the means of different bars. Some exotic aircraft even need to carry their own tow bar in order to get pushed. - ...

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by StereoTechque
Thu Jun 04, 2020 6:50 am
Forum: Technical/Operations
Topic: Landing wind direction
Replies: 28
Views: 3041

Re: Landing wind direction

FriscoHeavy wrote:


Most large/heavy jets do NOT have tires rated to 230 knots or higher.


A320 tires for eg. are rated for max speed of 195 knots. (Im referring Michelin & Goodrich)

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by StereoTechque
Thu Jun 04, 2020 6:45 am
Forum: Civil Aviation
Topic: LEAP engines on 737 and A320 fall way short of on-wing targets
Replies: 42
Views: 11830

Re: LEAP engines on 737 and A320 fall way short of on-wing targets

Sokes wrote:
I don't know if 6000 hours is o.k., bad or very bad. Anybody has some comparisons, e.g. to Trents or GE90?
What about IAE V2500?


For IAE it is 8000 to 12000 hours when on the A320 depending on the borescope findings and thrust rating. When on the A321 it is less than 8000.

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by StereoTechque
Wed May 27, 2020 2:17 am
Forum: Technical/Operations
Topic: Advantages of a pullback vs a pushback?
Replies: 17
Views: 2595

Re: Advantages of a pullback vs a pushback?

I remember when AA used TRs for “pullback” on the MD80s at DFW. The sequence would start with a momentary forward motion, then you’d hear the TRs engage before starting your pullback. Except for the slight forward motion, it was pretty cool. It was called Powerback. Saved a few minutes of time but ...

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by StereoTechque
Wed May 27, 2020 2:14 am
Forum: Technical/Operations
Topic: No bare aluminum on retro livery aircraft
Replies: 10
Views: 2550

Re: No bare aluminum on retro livery aircraft

Bare Aluminium is challenging to maintain. It is best if the metal has a primer and a coat of paint over it for protection and cosmetic purposes.

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by StereoTechque
Fri May 22, 2020 3:15 am
Forum: Technical/Operations
Topic: Advantages of a pullback vs a pushback?
Replies: 17
Views: 2595

Re: Advantages of a pullback vs a pushback?

kabq737 wrote:
That’s interesting thanks for the answers everyone.

Can all aircraft have a tow bar connected from the rear?

Nope not all aircrafts have that luxury.
There is a provision on the A320 MLG so that it can be pulled back in case of NLG overrun.

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by StereoTechque
Mon May 18, 2020 7:02 am
Forum: Technical/Operations
Topic: RR CTi Fan Colour
Replies: 5
Views: 1330

Re: RR CTi Fan Colour

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. You can see a similar color on the inner liner of the PW1100g engine. This is functional and a result of the ...

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by StereoTechque
Mon Apr 20, 2020 11:28 am
Forum: Technical/Operations
Topic: 747-200/300 with GE engines...Why the lower fuel capacity?
Replies: 17
Views: 2587

Re: 747-200/300 with GE engines...Why the lower fuel capacity?

Slightly off topic, the A320 with IAE engines have a slightly less Wing Tank capacity than the CFM counterparts due to the incorportaion of a Dry Bay inside the the Wing cell around the pylon area for additional safety. This can be a reason, however just a wild guess.

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by StereoTechque
Mon Apr 20, 2020 10:13 am
Forum: Technical/Operations
Topic: A320 Torque link Damper
Replies: 2
Views: 1920

Re: A320 Torque link Damper

Thank you JetMech. The Boeing literature cleared my doubt and I can somewhat now visualize the construction.

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by StereoTechque
Sat Apr 18, 2020 8:03 am
Forum: Technical/Operations
Topic: A320 Torque link Damper
Replies: 2
Views: 1920

A320 Torque link Damper

Anyone having internal construction reference of the same? Also does it dampen out Vertical(like shock strut) or Lateral movements? Can't seem to find any literature in the training manuals.

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by StereoTechque
Wed Apr 08, 2020 6:16 am
Forum: Technical/Operations
Topic: COVID19 stored aircraft chocks and engine covers
Replies: 7
Views: 2752

Re: COVID19 stored aircraft chocks and engine covers

Every new aircraft I have seen delivered from Airbus and Embraer comes with a cover kit for engines, pitots, apu exhaust, plugs for some air inlets, etc. Some airlines keep them on the aircraft, others remove them and store them in the line operations. These official covers are not necessarily requ...

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by StereoTechque
Sat Apr 04, 2020 6:30 am
Forum: Technical/Operations
Topic: A320 antenna locations
Replies: 9
Views: 3059

Re: A320 antenna locations

#7 is drain for fluids from the APU Compt. Kiss seals. It drains fluids when the aircraft is in the air sensing a certain pressure difference.(No elec sensors used)

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by StereoTechque
Sat Mar 28, 2020 8:16 am
Forum: Technical/Operations
Topic: Indigo A321neo Exit Config...
Replies: 2
Views: 930

Re: Indigo A321neo Exit Config...

6E initially took 321N with all exits active. Later however it was noticed that one Overwing exit is enough for evacuation of current 222 configuration. Hence they blanked out one Overwing exit to save on maintenance cost.

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by StereoTechque
Fri Feb 28, 2020 5:16 am
Forum: Technical/Operations
Topic: Silly designs in otherwise great aircraft
Replies: 56
Views: 8194

Re: Silly designs in otherwise great aircraft

I find the fasteners used to secure Radome on the 737 very lame. They should have used latches on the later models like on the A320. One faster overtorqued and the anchor breaks. Then you have to open the Radome again for access.

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by StereoTechque
Fri Feb 28, 2020 5:13 am
Forum: Technical/Operations
Topic: Silly designs in otherwise great aircraft
Replies: 56
Views: 8194

Re: Silly designs in otherwise great aircraft

BWIAirport wrote:
Why there has to be a 6-inch gap between passenger window planes is beyond me. I'm sure there's a reason for it, but it makes night filming quite difficult.


To maintain structural integrity of the fuselage by reducing chances of fracture.

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by StereoTechque
Sat Feb 08, 2020 6:45 pm
Forum: Civil Aviation
Topic: Strange taxing accident. 737 separates from tug... fatal injury to tug driver
Replies: 15
Views: 5851

Re: Strange taxing accident. 737 separates from tug... fatal injury to tug driver

I know it is too early to speculate, but watching the video it seems the Towing speed was high followed by a sudden braking by the Tug causing tow bar failure. Will have to wait for the official report to be out.

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by StereoTechque
Tue Jan 07, 2020 7:47 am
Forum: Technical/Operations
Topic: MLG Wheel falls off AC Dash-8 on takeoff - 2 days ago
Replies: 11
Views: 1289

Re: MLG Wheel falls off AC Dash-8 on takeoff - 2 days ago

Same incident happened on an A320 a couple of years ago, where the nose wheel liberated after Aircraft rotation. Investigation revealed the Final Torque was given after the lowering the axle jack, resulting in inadequate final torque and loosening of the axle nut.

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by StereoTechque
Wed Oct 23, 2019 11:06 am
Forum: Technical/Operations
Topic: Airbus Radome
Replies: 9
Views: 7229

Re: Airbus Radome

https://www.airliners.net/photo/Untitle ... /5736301/L

Is this also some kind of an Erosion boot for the Boeing?
-->

https://www.airliners.net/photo/Untitle ... /5736301/L

Is this also some kind of an Erosion boot for the Boeing?

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by StereoTechque
Mon Aug 05, 2019 1:32 pm
Forum: Technical/Operations
Topic: Airbus Radome
Replies: 9
Views: 7229

Re: Airbus Radome

Thank you VC-10 and fr8mech. That explains it.

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by StereoTechque
Sat Aug 03, 2019 5:01 pm
Forum: Technical/Operations
Topic: Airbus Radome
Replies: 9
Views: 7229

Re: Airbus Radome

Starlionblue wrote:
The radome is composite. The aircraft in this case is aluminium. Thus different surfaces.


Correct. But why is the composite Radome in two colors in the pic. It is evident on unpainted Airbuses. On the A320 for eg: Radome can be mfg using AFRP, QFRP, GFRP. or may be even more materials.

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by StereoTechque
Sat Aug 03, 2019 1:04 pm
Forum: Technical/Operations
Topic: Airbus Radome
Replies: 9
Views: 7229

Airbus Radome

https://www.airliners.net/photo/Untitled/Airbus-A340-642/418535/L?qsp=eJwtjLsOwjAMRf/FMxuIoVsRDCylQ/kAK76CikIi2xJEVf%2BdpLCd%2B9CZKcSX4%2BNDTqCGDKzhThtKrPw0amZ6IL%2BjSmG6dn177obTsRwsqh9yKYUdbQhIDvn3FxVonWBhdd2qe1cR2v/Sdl%2BijJYmXi1wHidali/%2BXi%2BK As per the pic is anyone aware what is the reason b...

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by StereoTechque
Sun Jul 14, 2019 8:00 am
Forum: Technical/Operations
Topic: Retread Tires on Commercial Planes
Replies: 22
Views: 2932

Re: Retread Tires on Commercial Planes

My observation on the A320 with Radial tyres: Have seen retreading not more than 5 times on a single tyre. Usually denoted by R1,R2 as such. And the Vendor carries out Shearography Inspection to make sure a tire is fit for a re-tread. Ive heard you can do more number of Retreads on a bias but the li...

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by StereoTechque
Tue May 28, 2019 7:04 pm
Forum: Technical/Operations
Topic: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?
Replies: 22
Views: 5360

Re: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?

The downside is that while the turbomachinery in all four engines will be identical, two engines will require additional gearbox components, a larger oil system and a mirror-image propeller design, increasing support costs. ] Counter rotating props on the same axis are for reducing the counter torq...

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by StereoTechque
Sat Apr 13, 2019 2:26 pm
Forum: Technical/Operations
Topic: De-rating a CFM56?
Replies: 14
Views: 3894

Re: De-rating a CFM56?

Say an engine is derated to x amount of thrust rating from a possible and higher y rating. Will the max EGT reduce and the EGT margin increase during normal operations.?

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by StereoTechque
Mon Nov 19, 2018 7:56 am
Forum: Technical/Operations
Topic: Aircraft Tire Brand Options
Replies: 24
Views: 3503

Re: Aircraft Tire Brand Options

Yes customer options eg. Bridgestone, Michelin, Good Year.

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