Search found 3586 matches

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by Tristarsteve
Sat Aug 10, 2019 5:21 pm
Forum: Technical/Operations
Topic: Airliners with air stairs
Replies: 44
Views: 3930

Re: Airliners with air stairs

Air stairs are (or were, not sure about now) an option for the A320 family as well. Very very very few airlines took it. Were. The 10 A320 ordered by British Caledonian, and delivered to British Airways were fitted with fwd airstairs. I saw them extended before delivcery in Toulouse, but on deliver...

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by Tristarsteve
Tue Aug 06, 2019 7:39 pm
Forum: Civil Aviation
Topic: British Airways A321 emergency evacuation in Valencia
Replies: 45
Views: 12244

Re: British Airways A321 emergency evacuation in Valencia

It would suggest that the Nbr 1 engine was implicated, and the crew were told not to open them.
But it looks OK in the picture.

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by Tristarsteve
Tue Jul 23, 2019 10:00 am
Forum: Technical/Operations
Topic: Pack/air cycle machine
Replies: 4
Views: 1242

Re: Pack/air cycle machine

Quite a good description of a 1970s system. B737-200? From 1982 onwards (B757), the air in the pack goes below freezing, and the coalescer sock is not required. You can see temps down around M18 deg c inside the pack. Much more efficient once they made the water separator work. Also you might add th...

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by Tristarsteve
Fri Jul 05, 2019 7:01 pm
Forum: Civil Aviation
Topic: Virgin Atlantic flight cabin fire
Replies: 69
Views: 14457

Re: Virgin Atlantic flight cabin fire

Delta safety video now says: “If you lose an electronic device between your seat, do not adjust your seat and ask a crew member for assistance.” On a proper lie flat business seat it is a nightmare to retrieve a phone. When I worked on the ramp meeting A330s with lie flat seats, it was a regular oc...

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by Tristarsteve
Wed Jul 03, 2019 8:25 pm
Forum: Civil Aviation
Topic: Nordic Aviation - 2019
Replies: 870
Views: 138424

Re: Nordic Aviation - 2019

Haven't seen this mentioned, but Swedish Lapland will get a new route next year. Eurowings will fly Cologne/Bonn-Arvidsjaur once a week from 2020-01-17 to 2020-03-16. EW5596 CGN0905 – 1155AJR 32A 5 EW5597 AJR1355 – 1645CGN 32A 1 Source: https://www.routesonline.com/news/38/airlineroute/284720/eurow...

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by Tristarsteve
Fri Jun 21, 2019 7:51 pm
Forum: Technical/Operations
Topic: Stuck two nights in LIT: Can't push back
Replies: 23
Views: 3373

Re: Stuck two nights in LIT: Can't push back

So you still use towbars??. Nearly all the tractors here are TBL. A TBL can handle nearly all aircraft up to its weight limit. Get a big one and a small one and you handle anything.

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by Tristarsteve
Sat Jun 08, 2019 5:40 pm
Forum: Civil Aviation
Topic: Media: AA refuses to supply IG with a spare part causing delays in SFO
Replies: 97
Views: 19858

Re: Media: AA refuses to supply IG with a spare part causing delays in SFO

Without knowing what the part is, it is hard to tell. AA probably has lots of A321 parts. It very well could have been a part common to multiple planes. AA does send 330s to SFO almost daily from PHL so that makes sense as to why there would be a 330-specific part in SFO. These are people who start...

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by Tristarsteve
Tue Jun 04, 2019 6:12 pm
Forum: Technical/Operations
Topic: Why retract flaps on the ground?
Replies: 51
Views: 6973

Re: Why retract flaps on the ground?

At ARN the fuel supply company will not drive their dispensers under the wing if the flaps/slats are not up.

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by Tristarsteve
Tue Jun 04, 2019 6:08 pm
Forum: Civil Aviation
Topic: IAG deciding between A220 and Embraer E2 for BA Cityflyer
Replies: 247
Views: 43647

Re: IAG deciding between A220 and Embraer E2 for BA Cityflyer

Marginal differences. Don't know if it would differentiate any important markets or not; I suppose if a CS300 can do LCY, then that is a real differentiator with a capacity increase of something like 40%. But Cityflyer are scope limited at present. Present rules state that all aircraft 100 seats or...

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by Tristarsteve
Sun May 26, 2019 4:45 pm
Forum: Technical/Operations
Topic: L1011, DLC and Bank Angle...
Replies: 17
Views: 1693

Re: L1011, DLC and Bank Angle...

I do not recall any restrictions of manual speed brakes with the flaps up I agree. I said flaps NOT UP. I was ground engineer. One day I was flying in the flight deck with a training flight engineer as well sitting behind the 3 man crew. I had the god seat behind the captain. Anyway we were descend...

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by Tristarsteve
Sun May 26, 2019 9:57 am
Forum: Technical/Operations
Topic: L1011, DLC and Bank Angle...
Replies: 17
Views: 1693

Re: L1011, DLC and Bank Angle...

I seem to remember that manual speedbrake operation was banned when the flaps were not UP. Before extending flaps, the speedbrake handle was stowed and stayed there. Then DLC joined in with land flaps.

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by Tristarsteve
Thu May 23, 2019 7:21 pm
Forum: Technical/Operations
Topic: Why are the APU GEN & APU BLEED usually left on?
Replies: 11
Views: 2784

Re: Why are the APU GEN & APU BLEED usually left on?

As a side note. On the B757/B767 the APU bleed and the engine bleeds are controlled by the electronics. The rule is only APU bleed or Engine bleed not both. The engine bleed valves are air powered open, and spring loaded shut. But quite often when the engines are shut down, especially if the APU is ...

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by Tristarsteve
Sat May 18, 2019 12:03 pm
Forum: Civil Aviation
Topic: Nordic Aviation - 2019
Replies: 870
Views: 138424

Re: Nordic Aviation - 2019

There is an airside bus transfer at ARN. There are gates at F pier (near pass control), A pier and B pier ( bottom of the arrival escalator.) In T2 there are two gates at ground level just about below security. T4 I don't know, not used it. At each gate there is a button to push to call the Swedavia...

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by Tristarsteve
Fri Apr 26, 2019 4:54 pm
Forum: Civil Aviation
Topic: SAS on strike
Replies: 110
Views: 18187

Re: SAS on strike

Part 13del scope - who ever heard of that in Europe British Airways has scope clauses. Why do you think the E190 at LCY have 98 seats?. There is a scope clause that limits 100seaters at London to Mainline pilots. There is also rules that prevent non BA pilots working at LHR. (but BALPA is quite flex...

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by Tristarsteve
Fri Apr 26, 2019 8:23 am
Forum: Civil Aviation
Topic: SAS on strike
Replies: 110
Views: 18187

Re: SAS on strike

Heard on P4 Stockholm just now a lady talking about scope clauses. Too many contractors.
Anyway hope they get it sorted.
I have been flying SAS in Europe since 1971, and am now booked on my first SAS longhaul flight in 2 weeks time to ORD.

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by Tristarsteve
Wed Apr 24, 2019 3:29 pm
Forum: Technical/Operations
Topic: 767-300 (non-ER) Transatlantic
Replies: 28
Views: 3270

Re: 767-300 (non-ER) Transatlantic

Obviously the 777-200ER and the 777-200LR have extended range beyond the vanilla 777 A models. They also have other enhancements that allow them to operate as an ETOPS flight.


BA operates B777-200 A models ETOPS to the USA. I thought all B777 were ETOPS built by Boeing.

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by Tristarsteve
Wed Apr 24, 2019 12:43 pm
Forum: Technical/Operations
Topic: Question about stab trim systems
Replies: 12
Views: 2145

Re: Question about stab trim systems

Of course, those are just the programmed inspections. If an AMT is up in the compartment and comes across a problem, he's obligated to report it. Except at SWA, of course. I couldn't resist. If they hadn't just blown off the inspection requirement, would SWA have just chewed out the mechanic and de...

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by Tristarsteve
Sun Apr 21, 2019 5:46 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6472
Views: 716039

Re: B737MAX Grounded Worldwide

Boeing does have technology to proactively handle defective AoA sensors, it is installed in 777s and 787s Could you please point me to where I can find some info on that? Just curious. Thank you. From the B777 MEL. Two AOA Vanes fitted, One required for despatch. Then the following note 34-21-06 An...

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by Tristarsteve
Tue Apr 16, 2019 11:41 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5474
Views: 718191

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

[quote="WIederling" If it is just for "feel right" on the MAX why did they not work MCAS functionality into the "feel unit" ? IMU there is a very real hard reason to have MCAS work on tailplane incidence. Boeing's description reproduced by 737.co.uk site is a circuitous...

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by Tristarsteve
Tue Apr 16, 2019 7:28 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6472
Views: 716039

Re: B737MAX Grounded Worldwide

My guess would be that the elevator feel computer doesn't have AoA as a possible input and only changes feel based on speed. Since the situation that required MCAS involves AoA it couldn't be done by the elevator feel computer without redesigning it. Just a guess based on no actual information. The...

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by Tristarsteve
Wed Apr 10, 2019 4:43 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6472
Views: 716039

Re: B737MAX Grounded Worldwide

I worked for 45 years on jet aircraft with AOA sensors. (Now retired) Spent most of that time on the ramp. I cannot recall ever having an AOA sensor fail mechanically.. But not uncommon, especially on the A320 was the AOA sensor heater failing. I have replaced a few AOA sensors because of heater fai...

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by Tristarsteve
Sun Mar 31, 2019 9:31 am
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2914

Re: Electric nose wheels

I would love to know how these are meant to work in the winter. When it is snowing and the ramp is icy we have trouble pushing back aircraft with a TBL.(Towbarless tractor) There is no weight on the nosewheels, and the TBL is very light, and it is common practice for someone to have to throw gravel ...

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by Tristarsteve
Thu Mar 28, 2019 5:06 pm
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 41
Views: 4085

Re: Aircraft Brakes

I wonder how much of the heat is brakes, and how much is due to the tyres flexing and heating up? A couple of years ago we had to tow a B767 from one end of ARN to the other. I was in the flight deck on the brakes (very rare as we usually have TBL with no brakeman) At the start, the aircraft was cov...

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by Tristarsteve
Tue Mar 26, 2019 9:22 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5474
Views: 718191

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Mandatory fit of the AOA disagree light in the cockpit should be sufficient to catch such an event, or fail high of a AOA sensor for any other reason, during T/O, assuming AOA disagree light on is a 'No Despatch'? what the he** are you talking about? look at the FDR data the AOA disagreement came l...

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by Tristarsteve
Sat Mar 23, 2019 10:25 pm
Forum: Civil Aviation
Topic: LEVEL mishap @ EZE
Replies: 12
Views: 3916

Re: LEVEL mishap @ EZE

EC-MOU left EZE with a 95-minute delay, on its way back to base. https://www.flightradar24.com/IBE2602/1fe7cef6 Any bets that is running as a deadhead? Who keeps spare slides in an outstation? You can operated with a slide missing. The EASA rules are more lenient than FAA. The missing slide limits ...

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by Tristarsteve
Sat Mar 23, 2019 4:38 pm
Forum: Technical/Operations
Topic: 737 Who Has Just Two AOA Probes?
Replies: 29
Views: 5370

Re: 737 Who Has Just Two AOA Probes?

Well if that's the case, the FAA will have to rethink ETOPS on the 737. How can a plane operate 180 minutes from a diversion airport with just one working AoA unless some other instruments or processing of data from other instruments can be pressed into service to substitute for an AoA. Well The B7...

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by Tristarsteve
Fri Mar 22, 2019 4:17 pm
Forum: Technical/Operations
Topic: L1011/DC10 general questions
Replies: 20
Views: 4399

Re: L1011/DC10 general questions

stephanwintner wrote:
Those seats look like something out of an L1049 not an L1011. I hope they are more comfortable than they look.

That is a simulator, and they are not L1011 original chairs

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by Tristarsteve
Fri Mar 22, 2019 9:06 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 595627

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

Ahh ok, perhaps I'm incorrect then. I've read elsewhere: "Boeing sells an option package that includes an extra AoA vane, and an AoA disagree light, which lets pilots know that this problem was happening. Both 737MAXes that crashed were delivered without this option." I also read that mos...

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by Tristarsteve
Tue Mar 19, 2019 4:49 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6472
Views: 716039

Re: B737MAX Grounded Worldwide

So, the stab is moving UNCOMMANDED and you recommend arguing semantics rather than turning off the offending system. Got it, where did you learn to fly? GF Isn't the point that the stab moves UNCOMMANDED quite frequently in the 737? Yes agreed. Haven't flown in a B737 cockpit for 20 years, but I re...

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by Tristarsteve
Mon Mar 18, 2019 4:25 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6472
Views: 716039

Re: B737MAX Grounded Worldwide

Regardless of the financial cost, would it be technically viable to retrofit two extra AoA sensors on the MAX already built, and/or add them to those frames yet to be built? If so, perhaps Boeing should be forced to add the extra sensors as a condition for removing the grounding order. The B777 and...

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by Tristarsteve
Mon Mar 18, 2019 11:14 am
Forum: Technical/Operations
Topic: L1011/DC10 general questions
Replies: 20
Views: 4399

Re: L1011/DC10 general questions

The park brake is similar to a B737. To release the brakes you just push on the pedals. To engage the park brake you push on the pedals, then pull up the park brake knob. You can see this knob in the photo. Capt side, left of the engine ignition switches, and below the yellow bar (flying control iso...

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by Tristarsteve
Mon Mar 18, 2019 9:15 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5474
Views: 718191

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Whoa, I havent heard this before, that Boeing sells the Max with an option package to have 3 AOA sensors and software to recognize disagreement. The two crash airplanes don’t have this option. Smells like mandatory retrofits may be coming https://twitter.com/trevorsumner/status/1106934415610073091?...

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by Tristarsteve
Sun Mar 17, 2019 8:29 am
Forum: Technical/Operations
Topic: L1011/DC10 general questions
Replies: 20
Views: 4399

Re: L1011/DC10 general questions

You can start up a Tristar on your own. I have done it many times. You sit at the F/E panel until the engines are running, then if you needed to taxy you could move to the Capt seat. All the controls for APU and engine start were easily accessed from the F/E seat. If you open the engines above idle ...

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by Tristarsteve
Mon Mar 11, 2019 9:36 am
Forum: Technical/Operations
Topic: Are there AoA sensors made of tubular spirit levels?
Replies: 34
Views: 2332

Re: Are there AoA sensors made of tubular spirit levels?

AOA sensors are usually little wings a couple of inches long that fly in the airflow. Inside the aircraft is a pick up that measures the angle they are flying at. The mechanism is heated electrically to stop it freezing. The SSA probes are very similar, but mounted vertically under the flight deck w...

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by Tristarsteve
Sat Mar 09, 2019 8:59 pm
Forum: Civil Aviation
Topic: Surviving L1011 Numbers?
Replies: 74
Views: 9647

Re: Surviving L1011 Numbers?

Sadly the decertification of the RB.211-22 engine pretty much ended the viability of the L1011... Even the 524 powered portion of the fleet just isn't viable to support... So this was the certain fate :'( Sent from my ONEPLUS A5000 using Tapatalk What is the difference between the -22 and the -524?...

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by Tristarsteve
Fri Mar 08, 2019 6:20 pm
Forum: Civil Aviation
Topic: Atlas Air 3591 Down in Trinity Bay, Texas
Replies: 1727
Views: 387207

Re: Atlas Air 3591 Down in Trinity Bay, Texas

To get a feel for the time it takes to go through the trim range, here is a video of the 787 trim test. https://youtu.be/-IlsPnMPYHE Obviously, the 787 has the motor and jack mounted opposite to that of the 737 (737 motor mounted on the floor, 787 mounted on the "ceiling"). Does anyone kn...

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by Tristarsteve
Tue Mar 05, 2019 9:44 am
Forum: Technical/Operations
Topic: 787 maintenance access
Replies: 20
Views: 2911

Re: 787 maintenance access

I used to run Tristars every week when I worked for Gulf Air in the 1980s High power engine runs were required in those days after every engine change (and we changed a lot of engines). Nowadays when an engine is delivered from the shop, it usually needs a leak check at idle only. It has been run on...

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by Tristarsteve
Mon Mar 04, 2019 10:03 am
Forum: Technical/Operations
Topic: Freezing Fuel?
Replies: 9
Views: 1456

Re: Freezing Fuel?

We go by actual fuel temperature, and not uncommonly end up circulating and moving fuel, as it approaches the minimum temperature, which can be as high as -47, depending on the fuel type. Just interested, how do you circulate and move fuel on a B744? You empty the stab into the centre soon after ta...

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by Tristarsteve
Thu Feb 28, 2019 9:56 am
Forum: Technical/Operations
Topic: Trent XWB performance/Inflight Shutdown Rate
Replies: 19
Views: 3209

Lightsaber So some person set ETOPS at 0.05 per thousand knowing DC-10 and L-1011 sales were safe. And then the RB211 and CF6 qualified! I worked in maintenance of the Tristar in the med 1970s when they were new. The RB211-22B had a cast HP Turbine blade that was lifed at 1200 cycles, and never made...

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by Tristarsteve
Sat Feb 23, 2019 8:07 pm
Forum: Civil Aviation
Topic: How much co-ordination was there between BOAC and BEA?
Replies: 11
Views: 2157

Re: How much co-ordination was there between BOAC and BEA?

Well they were completely separate. BOAC had an engine overhaul workshop in TBA at the base at LHR, and 500 meters away, BEA had an engine overhaul shop in their East base I worked for BEA from 1969 and never had any dealings with BOAC until after the merger, when they stole two of our Tristars to o...

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by Tristarsteve
Sat Feb 23, 2019 10:28 am
Forum: Civil Aviation
Topic: Nordic Aviation - 2019
Replies: 870
Views: 138424

Re: Nordic Aviation - 2019

[quote="jamesontheroad" Or is ARN really less competitive in STN against FR’s Stockholm alternatives?[/quote] Well ARN is my local airport. I usually travel to LHR on BA. Ryanair operate from Skavsta, which is nearly 3 hour drive from my house in Uppsala. My relatives live in Surrey, so an...

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by Tristarsteve
Tue Feb 19, 2019 1:52 pm
Forum: Travel, Polls & Preferences
Topic: US First Class vs EU Business Class
Replies: 58
Views: 5277

Re: US First Class vs EU Business Class

Business class travel disappeared in Europe when the majors ditched the Saturday night rule around 2001. Before that we saw aircraft leaving Friday evening with 90pc of the aircraft as business class sold. (not upgrades!). Nowadays its 10pc business class. Most European businessmen are forced to tra...

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by Tristarsteve
Wed Feb 13, 2019 3:17 pm
Forum: Civil Aviation
Topic: Fully Automated Jetbridge
Replies: 41
Views: 6184

Re: Fully Automated Jetbridge

In Europe the doors are usually opened by the cabin crew from the inside. This was done for safety to ensure the slide was disarmed before the door opened . A requirement on all B737 which have a manual girtbar.

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by Tristarsteve
Wed Feb 13, 2019 8:58 am
Forum: Civil Aviation
Topic: Fully Automated Jetbridge
Replies: 41
Views: 6184

Re: Fully Automated Jetbridge

ARN had a fully automatic jetway on Gate F36 about 10 years ago. But it was the most unreliable gate on the airport. The sensors that steered it were always getting blocked, and it could not cope with ice and snow. The airport maintenance dept were on standby every time an aircraft docked!! I believ...

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by Tristarsteve
Wed Feb 06, 2019 5:01 pm
Forum: Technical/Operations
Topic: Does a 777-200ER have a longer range than a 747-400?
Replies: 6
Views: 2250

Re: Does a 777-200ER have a longer range than a 747-400?

Boeing 747-400 7,285nm Boeing 777-200ER 7,065nm Boeing 777-200LR 8,555nm Boeing 777-300ER 7,370nm These will be maximum ranges which will not allow for a full payload. Define maximum range. I know that a B747-400 has flown LHR to SYD which is 9184nm (empty delivery flight) and a B777-200ER has flow...

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by Tristarsteve
Sun Jan 27, 2019 10:17 am
Forum: Technical/Operations
Topic: El Al 747's Tel Aviv to Eilat??
Replies: 16
Views: 2319

Re: El Al 747's Tel Aviv to Eilat??

Large aircraft do not land at Eilat,in the city, they land at Ovda a few miles away to the NW.

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by Tristarsteve
Thu Jan 24, 2019 6:25 pm
Forum: Civil Aviation
Topic: Passenger suing United for shattered windscreen and fear it caused
Replies: 91
Views: 14661

Re: Passenger suing United for shattered windscreen and fear it caused

Up until a few years ago, the B767 main nbr 1 windscreen was allowed to be dispatched with cracks in it. The wording in the MEL referred you to the AMM, which gave some inspection requirements, but basically if it was crazed or cracked, and the pilot could see through it OK, then you could dispatch ...

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by Tristarsteve
Sun Jan 20, 2019 9:14 am
Forum: Technical/Operations
Topic: Cabin Humidifier/Lower Altitude Pressurization Question?
Replies: 15
Views: 2145

Re: Cabin Humidifier/Lower Altitude Pressurization Question?

Swedish firm CTT make humidity control systems https://www.ctt.se/cair-vip/how-it-works/ Sole source supplier on all nextgen widebodies Boeing 777X – Humidifier for FD, OFCR, OFAR, Cabin Zone 1 & 2 Boeing 787 – Zonal Drying™ standard and Crew Humidifier 0ptional A350 – Cair™, Crew Humidifier and...

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by Tristarsteve
Fri Jan 18, 2019 3:28 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 595627

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

What StTim means by popped the circuit breakers is that they hit the cutoff switches for Trim. I can see I will need an American to English dictionary!! How popping breakers can mean operating switches, (sorry hitting switches) is beyond my grammar. I wonder how non English speakers interpret moder...

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by Tristarsteve
Fri Jan 18, 2019 2:17 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 595627

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

A question. The previous flight popped the circuit breakers stopping automatic trim changes. At what point and on what basis were these reset. A secondary question is why was the following flight not informed of that action? First I have seen about popped circuit breakers. Can someone refer me to w...

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