Search found 3438 matches

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by Tristarsteve
Tue Sep 18, 2018 8:33 am
Forum: Technical/Operations
Topic: Does 737-700 require thrust reverser to be operational
Replies: 22
Views: 1393

Re: Does 737-700 require thrust reverser to be operational

"a thrust reverser light" is a fault indication. Something is wrong with one of the reversers. You cannot depart with that light on. So you test the reverser and check the BITE indication and see what it says. Then either the reverser is now serviceable, or it needs to be deactivated for ...

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by Tristarsteve
Mon Sep 17, 2018 9:35 am
Forum: Civil Aviation
Topic: Boeing 777-300ER Multiple Navigation Instrument Failure
Replies: 133
Views: 22344

Re: Boeing 777-300ER Multiple Navigation Instrument Failure

Listen to the ATC tape and I could have sworn that they said their APU was inop? Did they do an ETOPS crossing without an APU?


An APU is not required for ETOPS on a B777.

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by Tristarsteve
Sun Sep 16, 2018 8:17 pm
Forum: Technical/Operations
Topic: The worlds first closed system for washing and deicing large airplanes.
Replies: 25
Views: 4717

Re: The worlds first closed system for washing and deicing large airplanes.

You're also wrong about Type I being 'hot' and Type II being 'cold'; both are applied hot at a nozzle temperature of around 80-85C. Not always. Here at ARN we use type 1 for deicing, mixed with water and applied at 80degC at a mixture depending on OAT. Then, if required, we use Type 11 for anticing...

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by Tristarsteve
Sat Sep 15, 2018 8:39 pm
Forum: Technical/Operations
Topic: What Cargo Freight Planes Carry The Most?
Replies: 25
Views: 3176

Re: What Cargo Freight Planes Carry The Most?

All Airliners fans know that most freight is fresh fish.
The Japanese appetite for sushi is inexhaustible

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by Tristarsteve
Sat Sep 15, 2018 7:39 am
Forum: Technical/Operations
Topic: The worlds first closed system for washing and deicing large airplanes.
Replies: 25
Views: 4717

Re: The worlds first closed system for washing and deicing large airplanes.

http://www.iasa.com.au/folders/Safety_Issues/RiskManagement/infra-red-deicing.html OSLO, Norway (AP) - A Canadian-built system for de-icing aircraft with infrared rays rather than chemicals will be tested at Oslo's airport, the first such trial in Europe, officials said Thursday. In cold weather, a...

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by Tristarsteve
Fri Sep 14, 2018 2:00 pm
Forum: Civil Aviation
Topic: British AIrways 103 LHR-YYC diverts to YFB due to fumes in the cockpit
Replies: 30
Views: 6470

Re: British AIrways 103 LHR-YYC diverts to YFB due to fumes in the cockpit

Having just retired after 45 years in maintenance, I do not think fume events have increased, but the crew reporting of events has definitely increased. Ten years ago a whiff of smoke in the cabin was dismissed. Nowadays it is written up and a long involved maintenance procedure is carried out. This...

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by Tristarsteve
Mon Sep 10, 2018 8:19 pm
Forum: Technical/Operations
Topic: 767 Fuel dump with Dual AC Bus Failure
Replies: 24
Views: 1676

Re: 767 Fuel dump with Dual AC Bus Failure

Couldn’t they have just pulled the fire handles?.

But there was no juice left in the battery. The LP cocks come off the hot battery bus.
The hot battery bus can only be fed by the battery, not by the DC busbars.
The B777 has special little LP cock batteries to get round this.

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by Tristarsteve
Sat Sep 08, 2018 6:46 pm
Forum: Civil Aviation
Topic: Why is Norwegian Air suffixed by “Shuttle”?
Replies: 28
Views: 4798

Re: Why is Norwegian Air suffixed by “Shuttle”?

One of the Busy Bee B737-200 had a rear pax door that opened inwards, so it could be opened in flight!!
It was used as a trainer by the Norwegian Army parachutists, who jumped from the B737.
A one-off?

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by Tristarsteve
Fri Sep 07, 2018 8:42 am
Forum: Civil Aviation
Topic: Nordic aviation - 2018
Replies: 950
Views: 115549

Re: Nordic aviation - 2018

A319s are also being reconfigured to 150 seats with the new interior.

Thats a lot for a A319. Easyjet get 154 into an A319, but with 4 overwing exits. I thought the limit was 144 with two exits?

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by Tristarsteve
Mon Sep 03, 2018 8:25 pm
Forum: Technical/Operations
Topic: Jet Liner Control System Failures??
Replies: 16
Views: 1586

Re: Jet Liner Control System Failures??

I have worked on the A320 since 1988, mostly ramp maintenance.. I can recall two occasions when I saw Direct Law on the post flight report. Both were caused by failure of an elevator position sensor. One in 1990 on an Iberia, we cleaned and sent back to Madrid. The other 15 years later we changed th...

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by Tristarsteve
Fri Aug 31, 2018 9:31 am
Forum: Technical/Operations
Topic: Electric Airport Vehicles
Replies: 4
Views: 538

Re: Electric Airport Vehicles

Well as the first towbarless electric tractor was delivered by LEKTRO in 1967, maybe they will come to your location soon.

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by Tristarsteve
Thu Aug 30, 2018 5:11 pm
Forum: Technical/Operations
Topic: How the 737 MAX 10 landing gear works
Replies: 202
Views: 12655

Re: How the 737 MAX 10 landing gear works

How is the innovative lever that retracts the inner cylinder on retraction any different from the same mechanism on the A330? It must be different or it would not be innovative. Or have they changed it slightly to get around a patent?

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by Tristarsteve
Sat Aug 25, 2018 6:13 pm
Forum: Technical/Operations
Topic: Use of GPU to start engines?
Replies: 8
Views: 958

Re: Use of GPU to start engines?

Most passenger airliners have an APU. This is used to start the engines and provide electrics until they are started. When the aircraft is parked at the gate, most airports require the APU to be shut down. Before this happens a GPU is connected, or more normally FEP (fixed electrical power from the ...

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by Tristarsteve
Mon Aug 20, 2018 7:13 pm
Forum: Technical/Operations
Topic: Purpose of low pressure cock in an engine fuel system?
Replies: 4
Views: 526

Re: Purpose of low pressure cock in an engine fuel system?

I like low presure fuel cock. A nice old term from the 1960s. As fr8 says now a fuel spar valve. Basically a airframe mounted valve that feeds fuel to the engine. Normally located right beside the pylon, under the slats. In old aircraft of 1960 era, like a dH Trident, there was an LP fuel handle bes...

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by Tristarsteve
Fri Oct 13, 2017 6:17 pm
Forum: Civil Aviation
Topic: 40 years ago: Hijacking of Lufthansa flight 181 "Landshut"
Replies: 4
Views: 1723

Re: 40 years ago: Hijacking of Lufthansa flight 181 "Landshut"

40 years ago!!!!
I remember this aircraft landing at BAH. It parked on a remote stand for refueling and we could see it from the Gulf Air hangar where I then worked. I managed not to get involved, as the hijackers were nasty in those days.

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by Tristarsteve
Mon Oct 09, 2017 12:43 pm
Forum: Civil Aviation
Topic: American Airlines 192 fire on a Container Loader in Hong Kong
Replies: 78
Views: 22207

Re: American Airlines 192 fire in cargo hold in Hong Kong

I think the guys did OK. The fire is way too big for a small hand held fire extinguisher, so wait for the experts to arrive. They can spray the firs from a safe distance. Go close to that machine you may injure yourself. Let it burn, its a machine.

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by Tristarsteve
Fri Oct 06, 2017 6:26 pm
Forum: Technical/Operations
Topic: Boeing 747-400 Start Up Procedure
Replies: 31
Views: 5259

Re: Boeing 747-400 Start Up Procedure

I don't remember any autostart feature in those birds and it isn't in the manual but maybe I missed something. I don't know anything about the computer flight sims. On the B744 Autostart was a customer option, but most aircraft had it fitted. We once had a delivery flight at LHR en route to somewhe...

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by Tristarsteve
Thu Sep 28, 2017 4:23 pm
Forum: Technical/Operations
Topic: Water Injection on Modern Turbofan?
Replies: 37
Views: 4502

Re: Water Injection on Modern Turbofan?

The RR Spey had water injection in some models. At Gulf Air our BAC 111-400 had water injection. It was essential for operations during summer days. the engines were flat rated at ISA, and when it was 35degC the performance was very poor without water, so the water was injected, which allowed the po...

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by Tristarsteve
Sat Sep 16, 2017 7:23 pm
Forum: Civil Aviation
Topic: Ryanair flight loses A nose wheel after takeoff
Replies: 10
Views: 3229

Re: Ryanair flight loses A nose wheel after takeoff

Not unheard of. I have been involved with two cases. Both times it was the nose axle that sheared off just inboard of the wheel. Can result in a noseleg replacement, not just a wheel change.

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by Tristarsteve
Fri Sep 15, 2017 8:22 pm
Forum: Technical/Operations
Topic: Technicians injured by door "popping" -- question
Replies: 6
Views: 1582

Re: Technicians injured by door "popping" -- question

I have seen it happen at ARN on an A320. We plug in a ground heater on the nightstop aircraft to keep it warm. Normally this works OK. But this night the crew that arrived with the aircraft read their SOPs and it said that if minus degrees, close the outflow vales by pressing the ditching button. Th...

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by Tristarsteve
Wed Sep 13, 2017 9:11 pm
Forum: Technical/Operations
Topic: Push Back Procedures
Replies: 11
Views: 1535

Re: Push Back Procedures

At ARN the airport publishes a diagram of push back routes for every gate. A copy is held in the tug so the driver can see. The straightish push back makes life easier in the winter when the ramp can get very icy, and the tug can slide about.

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by Tristarsteve
Thu Aug 31, 2017 2:47 pm
Forum: Technical/Operations
Topic: Electrical Power during One Engine Operation
Replies: 21
Views: 1874

Re: Electrical Power during One Engine Operation

Here at ARN Menzies rules that no-one may approach an arriving aircraft with the beacon on. There are exceptions for u/s APU, but every occurence must be coordinated on the radio in advance.
British Airways has exactly the same rule.

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by Tristarsteve
Sat Aug 26, 2017 7:08 pm
Forum: Technical/Operations
Topic: Equipment Cooling Question
Replies: 10
Views: 1222

Re: Equipment Cooling Question

I assumed there was a customer option or something comparable for an CPU/avionics conversion program that possibly involved liquid cooling. Basic answer is no. Most A320 aircraft computors have the same processor that was fitted in 1987, running the same software. Changing either is very expensive ...

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by Tristarsteve
Sat Aug 26, 2017 6:55 pm
Forum: Technical/Operations
Topic: A350 urgent EASA directive - hydraulic pump fire danger
Replies: 38
Views: 12381

Re: A350 urgent EASA directive - hydraulic pump fire danger

A350 hydraulics indeed run at 5000 PSI, same as A380. However I don't know if that fact has any bearing on the item at hand The cooling radiator in the fuel tanks is for the case drain flow. In a hydraulic pump a small flow of fluid is used to cool the pump and is then led away separately through a...

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by Tristarsteve
Thu Aug 24, 2017 7:18 pm
Forum: Technical/Operations
Topic: A350 urgent EASA directive - hydraulic pump fire danger
Replies: 38
Views: 12381

Re: A350 urgent EASA directive - hydraulic pump fire danger

So what is different about the A350.? There are thousands of B737 (and many other aircraft) with hydraulic cooling grids in the fuel tanks and no fuel inerting system. Why are these not grounded until fuel inerting is fitted? Must be a fundamental difference in the A350 case drain cooling system ove...

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by Tristarsteve
Mon Aug 14, 2017 9:34 pm
Forum: Technical/Operations
Topic: What is that hydraulic piston on the GE90?
Replies: 10
Views: 1686

Re: What is that hydraulic piston on the GE90?

Yes OK. Minimum flow at idle, and maximum flow at take off.

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by Tristarsteve
Sun Aug 13, 2017 7:42 pm
Forum: Technical/Operations
Topic: Introduction of the FMC/CDU?
Replies: 8
Views: 1131

Re: Introduction of the FMC/CDU?

The Saudia Tristars were delivered in 1978 with a FMC. Not quite up to B767 standards but it flew the aircraft along a inputted route.

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by Tristarsteve
Sun Aug 13, 2017 7:37 pm
Forum: Technical/Operations
Topic: What is that hydraulic piston on the GE90?
Replies: 10
Views: 1686

Re: What is that hydraulic piston on the GE90?

It is operated by HP fuel pressure, not hydraulics. It is a Variable stator vane actuator. You can see the linkage in the photo. That row of 7 horizontal levers goes right around the engine and opens and closes the stator vanes. All high bypass jet engines have something similar. The Vanes are close...

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by Tristarsteve
Wed Aug 02, 2017 5:46 pm
Forum: Civil Aviation
Topic: British Airways B788 flies for 9 hours despite lightning strike; aircraft grounded for a week
Replies: 38
Views: 12335

Re: British Airways B788 flies for 9 hours despite lightning strike; aircraft grounded for a week

Anytime anything happens to the aircraft, such as a lightning strike, the crew contacts dispatch and maintenance control. Those two departments along with pilots determine the best course of action, in this case continue. About four years ago BA operations changed their policy about in flight event...

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by Tristarsteve
Mon Jul 31, 2017 6:37 pm
Forum: Technical/Operations
Topic: Tiny countries FIR why so big?
Replies: 7
Views: 1320

Re: Tiny countries FIR why so big?

When I worked in BAH in 1980, the BAH FIR was the only one in the Gulf. It went from Iraq to India. The control room was on the ramp at Bahrain airport, and I knew a couple of Swedes who worked there. I popped in for coffee when they were on nights. Two controllers ran the whole Gulf!!! Oman, Emirat...

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by Tristarsteve
Sat Jul 29, 2017 8:43 pm
Forum: Technical/Operations
Topic: 787 fuel connections
Replies: 3
Views: 691

Re: 787 fuel connections

Does the 787 have unique hose connections?

No exactly the same as every other jet airliner.

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by Tristarsteve
Thu Jul 20, 2017 6:53 pm
Forum: Civil Aviation
Topic: SVA 787 circling +2 hours over MAN
Replies: 28
Views: 6910

Re: SVA 787 circling +2 hours over MAN

It sounds pretty serious to have all the flaps go at once. Sand? The flaps are designed to all fail at once. If one flap stuck and the other side moved, the ailerons would be overpowered and you are in trouble. All airliner flap systems have an assymmetry detector system that locks the flaps if any...

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by Tristarsteve
Tue Jun 27, 2017 7:22 pm
Forum: Civil Aviation
Topic: CZ passenger thrown coins into engine.
Replies: 43
Views: 15192

Re: CZ passenger thrown coins into engine.

The chance of any damage being done is nearly zero. It would be impossible to throw these coins into the core, unless you were really trying hard and standing in the nose cowl. With the engine running they would never enter the core, they would be centrifuged out. The worst that could happen would b...

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by Tristarsteve
Fri Jun 23, 2017 7:10 pm
Forum: Technical/Operations
Topic: 737 MAX 10 and its levered landing gear
Replies: 14
Views: 9782

Re: 737 MAX 10 and its levered landing gear

And it also goes further back the the De Havilland Trident 121. The MLG not only shortened, it rotated 90 degrees on retraction to fit into the bay. Must have been the same guys at Dowty that designed the A300/ A330 legs.

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by Tristarsteve
Wed Jun 14, 2017 12:58 pm
Forum: Civil Aviation
Topic: Jet2.com to fly limited STN-EWR flights in Q4 2017
Replies: 16
Views: 2461

Re: Jet2.com to fly limited STN-EWR flights in Q4 2017

Please correct me if I'm talking rubbish, as my knowledge on ETOPS is not all that great...

But I thought airlines have to get their aircraft certified to fly ETOPS routes

Perhaps they fly over Iceland. Then they don't need ETOPS.

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by Tristarsteve
Wed Jun 14, 2017 12:51 pm
Forum: Technical/Operations
Topic: Can pilots talk to the ground crew via radio?
Replies: 11
Views: 1566

Re: Can pilots talk to the ground crew via radio?

Yes. I had a walkie talkie airband radio and talked to the pilots with it. But as an airline we only had one frequency to use, but as we usually only had one aircraft on the ground it worked OK. I used it when I performed deicing release at remote stands. I could sit in the van and release the aircr...

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by Tristarsteve
Tue Jun 13, 2017 6:56 pm
Forum: Technical/Operations
Topic: Engineers Involvement During Pushback
Replies: 78
Views: 3943

Re: Engineers Involvement During Pushback

I worked as a ramp engineer at ARN for many years. I would say that aircraft engineers would only be seen on the headset for B787 or larger aircraft. I worked for BA, and the loader did the headset normally. I would do it only with a known problem. We had a radio in the office, and it was much more ...

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by Tristarsteve
Fri May 26, 2017 12:14 pm
Forum: Civil Aviation
Topic: Nordic Aviation 2017
Replies: 1126
Views: 143259

Re: Nordic Aviation Part 5

Look on Arlanda Facebook page

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by Tristarsteve
Tue May 16, 2017 8:06 pm
Forum: Civil Aviation
Topic: Concorde Why no 1st class?
Replies: 145
Views: 27172

Re: Concorde Why no 1st class?

I worked for Gulf Air in BAH when the BA Concorde flew to LHR every morning at 1000. I once had a senior BA manager with me.When he was to return to LHR I asked if he wanted me to book him on the Concorde, or the GF Tristar which both left at 1000. Tristar of course, he said, stand up bar in First C...

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by Tristarsteve
Sun May 14, 2017 1:26 pm
Forum: Civil Aviation
Topic: Aircraft accidents investigated with the help of plane spotters
Replies: 17
Views: 3666

Re: Aircraft accidents investigated with the help of plane spotters

Check out this thread from 2006. The aircraft spotter took the picture and saw the engine losing parts. He called the tower whop advised the crew. The crew had noticed a small anomaly, but were going to continue to destination. After the call they returned to ARN and we found two sq metres of C duct...

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by Tristarsteve
Thu May 11, 2017 3:34 pm
Forum: Travel, Polls & Preferences
Topic: L-1011 & DC-10 doors opening in case of emergency
Replies: 14
Views: 3201

Re: L-1011 & DC-10 doors opening in case of emergency

The type A doors on the Tristar were all electrically powered, open and close. The counterbalance was loaded as the door was closed, and unloaded as it opened. There was a manual crank stored in the flight deck, but this was never used in normal operation. Closing the door with the crank was very ha...

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by Tristarsteve
Wed May 03, 2017 6:37 pm
Forum: Technical/Operations
Topic: The A320-200ceo and its Ancient CPU's
Replies: 43
Views: 5435

Re: The A320-200ceo and its Ancient CPU's

As a topical comment. On the BA B747-400 the FMS was getting old a few years ago. The BA engineers had to actively delete unused way points and airports to get them into the memory. The memory was in kilobytes. There was an active program to split the FMS database in two. One for westbound, and one ...

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by Tristarsteve
Wed May 03, 2017 6:20 pm
Forum: Technical/Operations
Topic: Quick question: Can some engines on some types be started with the PACS running?
Replies: 32
Views: 3045

Re: Quick question: Can some engines on some types be started with the PACS running?

In the good old days on the Tristar there was a flight engineer sitting there who controlled it all himself. In the Middle East, packs were required. So the standard engine start was as follows. The APU was used and it was supplying Nbr 2 pack. Nbr 3 engine start selected. The engine winds up and th...

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by Tristarsteve
Wed Apr 26, 2017 5:51 pm
Forum: Civil Aviation
Topic: DY 787--Single vs Dual Jet Bridge Use
Replies: 6
Views: 1533

Re: DY 787--Single vs Dual Jet Bridge Use

ARN does not have any gates with double bridges.
The B787 has a problem using jetbridge at door L1 as the AOA probe is very close to the door. Many airlines have banned the normal use of L1 because of this.

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by Tristarsteve
Mon Apr 24, 2017 5:44 pm
Forum: Civil Aviation
Topic: Overbooking of Flights has become a major issue.
Replies: 143
Views: 10835

Re: Overbooking of Flights has become a major issue.

I am willing to bet that this doesn't happen in Europe where there are more stringent consumer protections than what we get in the USA. Two things happened in Europe. First nearly all passengers travel on non-refundable tickets, so the airline gets the money even if the seat is empty, and, Secondly...

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by Tristarsteve
Tue Apr 18, 2017 6:39 pm
Forum: Technical/Operations
Topic: Long Flight Crew Rests on Narrow Body Aircraft
Replies: 49
Views: 13021

Re: Long Flight Crew Rests on Narrow Body Aircraft

Not sure why any crewmember would need a rest area for flights that short. When I was flying we would do Toronto Barbados and back in a single duty day It really depends on where the aircraft is registered. Toronto Barbados and back includes a stop. No crew rest reqd. If the flight time exceeds 8 ho...

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by Tristarsteve
Thu Apr 13, 2017 4:23 pm
Forum: Civil Aviation
Topic: SAS considering A321LR or 737MAX for US-Europe
Replies: 93
Views: 18076

Re: SAS considering A321LR or 737MAX for US-Europe

ARN to BWI is almost 3600 nm great-circle distance, or approximately 9 hours of scheduled flight time eastbound (against the headwinds).

The jetstream goes East. The flight time is longer Westbound.

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by Tristarsteve
Thu Apr 06, 2017 6:06 pm
Forum: Technical/Operations
Topic: Engines in the Middle East
Replies: 8
Views: 1624

Re: Engines in the Middle East

When most of Europe was grounded by the Icelandic volcano, I was working in ARN and met the Qatar A330 from DOH, as we were open for business. The crew had a very close look at the engines during their PDC and called me over as they found evidence of volcanic ash in the exhausts. But it was only san...

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