[updated:LAST EDITED ON 09-09-02 AT 12:40 PM (GMT)]Something I always wondered.
Maybe wysiwyg can help. When a twin jet experiences an engine failure after take off (let’s say at FL330) ,what is the procedure? Does an ETOPS qualification means that you can fly anyway? ( I don’t think so) Do you have to land ASAP?
By: wysiwyg - 11th September 2002 at 22:42
RE: Engine failure
The amount of time specified for ETOPS approval is dependent upon the type and the operator up to a maximum of 180 minutes.
To answer the original question about when you decide to divert – it basically depends on how many systems you have. In simple (and generalised) terms when you are down to your last item it’s time to go elsewhere. e.g. – engine failure in a twin, divert as any further loss results in becoming a glider. Loss of air conditioning pack, divert as any further loss means decompression. There are some tricks however; if you lose one of your two generators you can start up the APU and use its generator avoiding the need to divert.
By: EGNM - 11th September 2002 at 21:31
RE: Engine failure
I’m pritty sure it’s within 180mins of a suitable diversion airfield – i seem to remember seing an Air 2000 flight plan for a Boeing 767-300 ETOPS flight to Sandford which named it’s ETOPS diversions as Belfast International (Aldergrove), Keflavic, and Halifax (Canada, not West Yorks!!)
By: wysiwyg - 11th September 2002 at 21:11
RE: Engine failure
Damn, I wrote a full explanation last night and today it is gone because of the bulletin board software problem. If I get time I’ll rewrite it later.
By: Dazza - 11th September 2002 at 19:02
RE: Engine failure
Happy to help.:-)
Regards, Dazza.
By: MapleLeaf_330 - 11th September 2002 at 17:41
RE: Engine failure
Very interesting. Thanks for clearing that up.
Have a good day.
Stephen
By: Dazza - 11th September 2002 at 17:20
RE: Engine failure
[updated:LAST EDITED ON 11-09-02 AT 05:24 PM (GMT)]I posted this reply yesterday but it disappeared so here goes again, the propellor, or more correctly impellor as wysiwyg mentioned, between the wings is not to push the aircraft forward or guide it in anyway during the glide, it is called a RAT (Ram Air Turbine) it is extended into the airflow in the event of engine failure to provide emergency electrical or hydraulic power.
Regards, Dazza.
By: MapleLeaf_330 - 11th September 2002 at 17:14
RE: Engine failure
Hi,
Sorry, my password hasn’t been working. I should clarify somewhat my earlier reply. I should have said the prop (possibly the device mentioned afterwards in response) guides the aircraft a bit in its glide, it doesn’t actually “push”, obviously that would be impossible with a jet aircraft.
Sorry for the inaccuarate word useage.
Regards,
Stephen
By: Dutchy - 9th September 2002 at 13:37
RE: Engine failure
>We had that very scenario in Canada last year when an Air
>Transat 330 ran out of fuel in one engine, and then in the
>other over the Atlantic enroute to Portugal. The aircraft
>COASTED to the Azores. However, in a special on television
>”relived” the final events, and said that a small propeller
>drops down from under the belly of the aircraft (between the
>wings) in an effort to help push the plane a little further
>and aid with the “coasting”. I was really surprised to hear
>that.
??????????????? A propeller to push an airliner further? Wasn’t that a generator which helps to generate the much needed electrical power when an engine seize to work. I think normally the engines generate power but if the engines run out of fuel then this has to be taken over by an other electrical source. The “propeller” works as an dynamo on a bike.
regards,
jw
By: Dutchy - 9th September 2002 at 13:31
RE: Engine failure
[updated:LAST EDITED ON 09-09-02 AT 01:31 PM (GMT)]You have to land immidiately. ETOS only means you are alowed to cross an ocean x-houres away from an airport. Your are not allowed, even if you wanted to, to continue to your destination. What would happen if your other engine failed too.
regards,
jw
ofcourse I’m not a pilot so for the exact rules you have to talk to them.
By: MapleLeaf_330 - 9th September 2002 at 13:04
RE: Engine failure
We had that very scenario in Canada last year when an Air Transat 330 ran out of fuel in one engine, and then in the other over the Atlantic enroute to Portugal. The aircraft COASTED to the Azores. However, in a special on television “relived” the final events, and said that a small propeller drops down from under the belly of the aircraft (between the wings) in an effort to help push the plane a little further and aid with the “coasting”. I was really surprised to hear that. The final report outlining the cause is due out later this year. However, Air Transat has to fly closer to an airport now, rather than cutting across the middle of the Atlantic. They are a charter and do it to cut down on time. I believe though by law most ETOPS aircraft must fly within two hours of an airport for these very reasons of some sort of engine malfunction, or emergency situation.
I think I retold that situation correctly??
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September 9, 2002 at 12:39 pm