757 Gear problem out of Linate yesterday (BA569)?
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757 Gear problem out of Linate yesterday (BA569)?
Not quite sure where to post this:
While wakeboarding yesterday (05/06/03) evening at the Idroscalo in Milan I couldn’t help but notice the BA569 757 departing. And what a beautiful sight it was (757 = sexiest plane to have taken to the skies). But what really caught my attention was the fact it disappeared off into the distance with the undercarriage lowered. It was still lowered when it was an indistinguishable dot in the distance.
Would there be any reason for this? Was it done intentionally or was there a "glitch"? Could the crew or anyone drop a line to let us know, coz I’m dying of curiosity.
Thanks in advance for any replies, w.
While wakeboarding yesterday (05/06/03) evening at the Idroscalo in Milan I couldn’t help but notice the BA569 757 departing. And what a beautiful sight it was (757 = sexiest plane to have taken to the skies). But what really caught my attention was the fact it disappeared off into the distance with the undercarriage lowered. It was still lowered when it was an indistinguishable dot in the distance.
Would there be any reason for this? Was it done intentionally or was there a "glitch"? Could the crew or anyone drop a line to let us know, coz I’m dying of curiosity.
Thanks in advance for any replies, w.
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Could have been any number of reasons. Can't speak for the 757 but on the Airbus it's not uncommon to leave the gear down due to failed wheel tacheometers (allows the wheels to stop spinning before the gear goes up) or to cool hot brakes if there are no brake fans fitted. If there really was a serious glitch I suspect the aircraft would either have returned to LIN fairly soon or diverted to MXP where there may have been more engineering cover.
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Yup, if a brake is capped off on the 757 then the gear needs to be left down on take off for a period of time (can't find the referance right now). Incidentally this causes a serious performance degradation, of 10 tonnes or so !
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A relatively rare occasion, but if you live near an airport you're quite likely to see that every now and then. Sometime last week I saw an Alitalia 777 performing what appeared to be a normal SID out of 16R at Fiumicino with all hanging down. You mentioned about a perfomance degradation, well on the 777 those bogies look immensely saggy \o/ \o/ Imagine the drag.
Alitalia has just recieved the 777 and they seem to do quite a bit of traning at night fliying normal and abnormal circuits around the airport. Is flying the aircraft 'dirty' part of any airline training programme?
Alitalia has just recieved the 777 and they seem to do quite a bit of traning at night fliying normal and abnormal circuits around the airport. Is flying the aircraft 'dirty' part of any airline training programme?
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Yes and no.
If you are doing circuit training the wheels get spun up every time you land which heats them, and then the brakes are applied as you gear up, when the gear goes into the wells.
When I was base training every few circuits the gear was left down until downwind for cooling purposes - so yes its fairly standard when training, but not for a training purpose !
If you are doing circuit training the wheels get spun up every time you land which heats them, and then the brakes are applied as you gear up, when the gear goes into the wells.
When I was base training every few circuits the gear was left down until downwind for cooling purposes - so yes its fairly standard when training, but not for a training purpose !
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Tonic, no I think you are confusing two issues here.
The gear is often left down on circuit training to cool the gear.
The issue here is (probably) something different - to do with brakes capped / de-activated due to a fault / leak.
On a normal take off the brakes are automatically applied as the gear is retracted, this is so the wheels are not spinning as they go into the bay.
If a brake is capped off that particular wheel may still spin after take off, so the gear must be left down for min 2 minutes to allow the wheels to stop spinning. This procedure would mean the MTOW is reduced by 14.3 tonnes.
The other option is wait until the engineers come from from base to fix the leaky brake - a long option.
I don't know about performance out of LIN, but from Italy back to LHR I suspect that performance would not have been an issue at all and they may have even got away without leaving any bags behind. (It's an overpowered beast....) To give you an idea, anti skid inop is a similar performance problem (13 tonnes degradation), and I made it make from SSH (Sharm - el - Sheik) to LGW a few months ago no problem....
The gear is often left down on circuit training to cool the gear.
The issue here is (probably) something different - to do with brakes capped / de-activated due to a fault / leak.
On a normal take off the brakes are automatically applied as the gear is retracted, this is so the wheels are not spinning as they go into the bay.
If a brake is capped off that particular wheel may still spin after take off, so the gear must be left down for min 2 minutes to allow the wheels to stop spinning. This procedure would mean the MTOW is reduced by 14.3 tonnes.
The other option is wait until the engineers come from from base to fix the leaky brake - a long option.
I don't know about performance out of LIN, but from Italy back to LHR I suspect that performance would not have been an issue at all and they may have even got away without leaving any bags behind. (It's an overpowered beast....) To give you an idea, anti skid inop is a similar performance problem (13 tonnes degradation), and I made it make from SSH (Sharm - el - Sheik) to LGW a few months ago no problem....
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FEBA...
I am not what you say. I am 18, living at home with parents, with many achievements under my belt. Not a journo, so please, do not jump to conclusions. I think I have a good reputation around here for trying to learn things, and you ask questions in order to do that.
I am not what you say. I am 18, living at home with parents, with many achievements under my belt. Not a journo, so please, do not jump to conclusions. I think I have a good reputation around here for trying to learn things, and you ask questions in order to do that.
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Don't worry Tonic. It's the standard response on here from some quarters to anyone asking a question. If you don't understand how things work then you must be a "journo" (i.e. a very bad person) asking for information and that is bad. Or, more likely, but not as bad - for nothing is as bad as a "journo", a terrorist.
Note how there are few people on here who try and understand the workings, motivations etc. of a "journo". Maybe they should ask for media training from their employers to find out.
Cue salvos accusing me of being a "journo". The most base of all insults on this board.
Note how there are few people on here who try and understand the workings, motivations etc. of a "journo". Maybe they should ask for media training from their employers to find out.
Cue salvos accusing me of being a "journo". The most base of all insults on this board.
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Tonic Please
I would recommend you take up Banana's advice , I'm sure the two of will will make fine journo's.
Good luck
FEBA
Maybe they should ask for media training from their employers to find out.
Good luck
FEBA
Are you purposely trying to create an atmosphere of sarcasm towards me and banana99 ?