Revenge of the Dreamliner
March 14th, 2018 at 4:26:07 PM permalink | |
Nareed Member since: Oct 24, 2012 Threads: 346 Posts: 12545 | Now and then you read articles in the aviation press that suggest the 757 and 717 (aka DC-9) kind of became more popular after their production run ended. Donald Trump is a one-term LOSER |
April 7th, 2018 at 7:12:04 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | Well it looks like Boeing is persuading the domestic legacy airlines to dump their Airbus orders in favor of the Dreamliner. First it was Hawaiian airlines cancelled the only A330-800 order left on the books (6 aircraft) in favor of 10 Dreamliners. Now American Airlines has cancelled their 2007 order for 22 A350s in favor of an order for 47 Dreamliners. A350 orders 22| 5 October 2007: American Airlines 45| 10 March 2010 : United Airlines Originally ordered 25 A350-900s for 2016 EIS. Order converted to 35 -1000s on 20 June 2013.Order were converted to 45 A350-900s on 6 September 2017. 25| 19 November 2014 :Delta Air Lines 2017 | 8 deliveries Delta has already received 8 out of 25 of their A350s, so that order is probably firm. But they still have an order for 25 Airbus A330-900neos which are not supposed to begin deliveries for two years. As Delta inherited an order for 18 Dreamliners from Northwest, and they cancelled that order a little over a year ago, they are unlikely to change their mind again. |
April 9th, 2018 at 2:57:27 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | One of the selling points of the Dreamliner ould be that it would create new nonstop routes. It had more range than the B767 and B757, but it carried fewer people at less cost than the four engine B747, A340 or A380. Clearly some of these routes are too long and thin, and owe their existence exclusively to the specifications of the Dreamliner. SFO and LAX to Singapore was not possible with a twin engine plane before now. Other routes are simply flown on a Dreamliner for the first time. Clearly Boston to London Heathrow has been flown since just after WWII, but Boston to Gatwick was flown for the first time by a Dreamliner. As of the end of 2017 Boeing claims these new nonstop routes were flown for the first time by a Dreamliner.
A couple of the claims seem dubious to me. Singapore's Changi Airport opened officially on 29 December 1981 , and London Heathrow opened in 1946. It seems unlikely that a Dreamliner was the first plane to fly commercially between these airports, but I suppose it is possible that all flights were out of Gatwick. The Dreamliner opened 6 routes in Mexico Mexico City Mexico ----------Seoul South Korea Mexico City Mexico ----------Shanghai China Puerto Vallarta Mexico ---------- Gatwick London England Puerto Vallarta Mexico ---------- Manchester England Cancun Mexico ---------- Stansted London England Cancun Mexico ---------- Dublin Ireland |
April 14th, 2018 at 4:44:39 PM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | https://www.bloomberg.com/news/articles/2018-04-13/dreamliners-longest-trips-face-curbs-on-rolls-royce-engine-woes?utm_source=quora About 1/4 of the 670 Dreamliners delivered are facing sever engine problems. The FAA is about to limit their ETOPS times which will create much longer routes for TransPacific. Boeing selected two new engines to power the 787, the Rolls-Royce Trent 1000 and General Electric GEnx. The 787-8 and −9 were intended to have a certified 330 minute ETOPS capability. The newer 787s rolling out of its factories now are powered either by a General Electric Co. turbine or the updated Trent 1000 TEN, a new variant redesigned for greater durability and are not affected. The RR Trent 1000 engines were not purchased by the US flagged airlines who favor the General Electric GEnx. In early 2018, of 1277 orders, 681 selected GE (53.3%), 420 Rolls-Royce (32.9%) and 176 were undecided (13.8%) Norwegian is replacing the Trent 1000 with Trent 1000 TEN on it's B787-9s, and a different RR engine on it's B787-8s. |
April 30th, 2018 at 9:27:27 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | FAA reduced the ETOPS from 330 minutes to 140 minutes, but the FAA only has jurisdiction over 14 Dreamliners with the Trent 1000 engine. Most are owned by leasing companies in the USA and leased to Avianca in Bogota. The do not cross area can probably be circumvented with a slightly longer path to Europe. Trans Pacific operations are severely impacted, so if there are similar rulings by different bodies covering the large number of ANZ or ANA then they will probably have to replace the engines. Norwegian has already scheduled replacements for the older engines. Aeroméxico's 16 Dreamliners all use GE engines and are not affected. |
August 31st, 2018 at 1:50:52 AM permalink | |
Fleastiff Member since: Oct 27, 2012 Threads: 62 Posts: 7831 | AL Jazeera reports that it has received and published on August 22, 2018 a transcript of a Dreamliner that had to return to Auckland soon after take off last December fifth. It is a transcript of Tower-Plane radio communications only. It is marked confidential and such documents are generally not released by the New Zealand authorities. Investigations in New Zealand do not focus on blame allocation. Ten minutes after having been cleared for take off, the plane informed the tower that it had an engine problem and would remain in the area until they had it sorted. Nineteen minutes after take off clearance, the plane broadcast a PAN message that it was returning to the airport and needed radar vectors for a direct return. Delays and rescheduling still affect Air Newzealand as certain engines suffer compressor blade problems and pilots know that adding power to a critical engine to compensate for the power lost by a failing engine appears to be a risky maneuver. |
August 31st, 2018 at 7:02:17 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | Air New Zealand has 11 Dreamliners the oldest of which was delivered on 30. Jun 2014. They are equipped with Rolls Royce Trent 1000 which have had Blade cracking Corrosion-related fatigue cracking of intermediate-pressure turbine IPT blades was discovered at All Nippon Airways in early 2016. Engines showing excessive corrosion were pulled from service and repaired in a shop visit, more corrosion-resistant blades were developed and rolled-out. HPT blades fatigue was checked and IPC rotor seals inspected but several airlines had to ground 787s. Rolls had to spend $35 million on unexpected “technical provisions” for its in-service Trent 1000 fleet in 2017. In April 2018, the inspection interval for 380 Package C Trent 1000s was reduced from every 200 flights to every 80 to address durability problems, as the EASA should be followed by the US FAA, reducing ETOPS from 330 to 140 minutes and impacting trans-Pacific flights. On April 17, the US FAA confirmed this ETOPS reduction.On 19 April, the EASA issued an Airworthiness Directive stating "occurrences were reported on RR Trent 1000 ‘Pack C’ engines, where some IPC Rotor 1 and Rotor 2 blades were found cracked. This condition, if not detected and corrected, could lead to in-flight blade release, possibly resulting in reduced control of the aeroplane." EASA inspection rates are increased but ETOPS are maintained. On 26 April 2018, the FAA limited ETOPS for package C engines. This limited flights to 60 min from a diversion airport, affecting Air Europa, Air New Zealand, Avianca, British Airways, Ethiopian, LATAM, LOT Polish, Norwegian Air, Royal Brunei, Scoot, Thai Airways, Virgin Atlantic. |
August 31st, 2018 at 8:28:11 AM permalink | |
Fleastiff Member since: Oct 27, 2012 Threads: 62 Posts: 7831 | I assume that most planes with two engines will have two engines of the same type and that if one engine has fan blades that are failing the other engine will have fan blades of the same age and same type and that have been subjected to extremely similar flight and maintenance stresses, so I can understand imposing a range limitation and that it will have impact on longer, over-water flights. |
August 31st, 2018 at 11:10:19 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | It may make sense, but this is the first time I've ever heard of ETOPS being taken away . It is possible to fly across the Atlantic without ETOPS, but you have to fly over Scotland, Iceland,and Greenland to stay within 60 minutes of a diversion airport. I've only ever heard of one route in history that tried to do it, a flight from Israel to Canada, and that was 32 years ago. Basically the airlines didn't find it worth it to fly that far out of the way, and they simply stuck to 3 and 4 engine jets until the rules were relaxed allowing 90 minutes, then 120 minute, and then longer times. The FAA still figures one engine may go out, but the manufacturer has to show that it can fly that far on a single engine and land properly. So far 788 Dreamliners have been delivered with the General Electric Engines and 454 with the Rolls Royce engines, but it is only an earlier variant of the RR engines that are having trouble. The North American airlines ordered all their Dreamliners with the GE engines, so they are not affected. 89 American Airlines 55 United Airlines 37 Air Canada 15 Aeroméxico 10 Hawaiian |