Talk:ETOPS/LROPS
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How did you calcuate the 2 hours' range? If the air speed is 850 km/h, the airplane will cover 1700 km in two hours. This will make a Hong Kong -> Los Angeles flight pretty safe that you can land in Taipei. Tokyo, Petropavlovsk-Kamchatsky, Anchorage, Vancouver and Los Angeles (these are just a few selected major airports). Or you have to slow down the airplane because flying one one engine will be slow. But how slow? -- Toytoy 15:41, Oct 11, 2004 (UTC)
Okay, the ETOPS diversion flights are certified like this, during an inflight shut down, the airplane must descend to approved heights, maximum thrust will be used and the fuel consumption is higher during such flights (due to carrying the dead engine and extra drag needed to keep the plane straight). The tables in the cockpit's airplane flight manual will give you the figures. If the air is still, it's no problem. However strong headwinds will lower the ground speed, reducing the distance you can cover within the given diversion time. Northern Pacific has particulary not so good weather most of the year. Also, if the weather permits opening of the diversion airports. If airports are closed (especially the Russian ones), the pilot is left with a wing and a prayer. ETOPS-180 takes care of that.-- Fikri 05:07, 17 Apr 2005 (UTC)
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[edit] ETOPS/LROPS
I reverted the article title because, though LROPS is still proposed, it is still very much intertwined with ETOPS. Their descriptions are very similar, and the fate of one relies on the other. —Joseph/N328KF (Talk) 05:38, 26 January 2006 (UTC)
There is a further restriction in the ETOPS rules which state that the fuel must be the greater of the single engine burn to the ETOPS alternate or the 2 engine burn at 10,000 feet. This altitude is the maximum altitude the aircraft can operate in the event of a depressurization.
On flights from North America across the Pacific,, particularly the Hawaiian rouites, the 10,000 foot fuel burn is often more restrictive than the single engine fuel burn requirements.
The computation of the Equal Time Point (ETP) is based on the result.
Further, the aircraft must be equipped with enhanced equipment that increases the redundancy of certain systems, specifically hydraulics and electrics. A 3 or 4 engine aircraft has the engine driven generators and hydraulic pump redundancy, but a two engine aircraft does not. On the Boeing products a Hydraulic Motor Controlled Generator (HMG) is installed which provides this redundancy on 2 engine aircraft. Gandrews 03:44, 26 June 2006 (UTC)
[edit] Neutrality Despute: Early twin-engine high-bypass turbofan airliners
From the article:
"Outside the USA, other countries followed ICAO regulations, which allowed for 90 minutes' diversion time. This fact was exploited by Airbus, launching the world's first twin-engined high-bypass turbofan widebody airliner, the Airbus A300, in 1974. It was about three quarters the size of DC10s and Tristars and for an equivalent load for the same distance and cheaper to operate. The A300 was eagerly snapped up by airlines all over the world."
The bold selection is a very disingenuous statement. Airlines were very cool to the initial Airbus A300, and the first customers were all national airlines of the Airbus member states. In fact, Airbus was forced to build and park a number of "white tail" aircraft due to insufficient demand.
Comparing A300 sales from 1974 through 1977 with the 747, DC-10:
A300 - 53 747 - 105 DC10 - 72
It wasn't until 1978 that Airbus began relieving consistent orders for the A300, which is a far cry from the quotation above. Not to mention, the A300 was ultimately surpassed in orders by its competitor, the B767. Given the fact that Airbus employees were found tampering with Wikipedia articles, I believe this section should be revised to remove bias.
[edit] ETOPS-330
The FAA granted ETOPS 330. It will take some significant reworking of the article to fit this in: [1] [2] —Joseph/N328KF (Talk) 04:20, 9 January 2007 (UTC)
[edit] EROPS
It used to be called EROPS, not ETOPS. The early 767 flights over the North Atlantic were called EROPS before the name was changed in the mid to late 1980s. I inserted this fact in the article. Archtrain 19:08, 26 August 2007 (UTC)
[edit] Add maps?
Would it be possible to add maps showing the range of ETOPS-90/120/180/etc. aeroplanes, so that you can see what kind of areas are excluded if you don't have the required certification? -- pne (talk) 11:37, 30 October 2007 (UTC)
[edit] Little twins.
Does anybody use B-737 or A-320 on routes where ETOPS is really significant (esp. big waters)? I remember someone in the late 1980s asked for FAA licence to charter wingtip droptank equipped vintage DC-9 planes between LA and Aloha. He was told to find a mental asylum. —Preceding unsigned comment added by 82.131.210.162 (talk) 17:13, 17 January 2008 (UTC)
