Все меняется в этом мире, вот и нет уже двух двигателей...
"Вести с полей" ИКАО:
"Extended diversion time operation. - Any flight by an aeroplane where the flight time at the one engine inoperative cruise speed (in ISA and still air conditions), from a point on the route to an adequate alternate aerodrome, is greater than the threshold time approved by the State of the Operator or any flight operated in an area designated by the State of the Operator as an area of extended diversion time applicability".
FW Именно это я и имел ввиду. Теперь требования по полетам с большими удалениями до запасных будут распространяться на самолеты вне зависимости от числа двигателей.
Про статус стандартов ИКАО Вы правы, но эти поправки к Приложениям родились в результате согласования позиций почти всех заинтересованных сторон в рамках Группы экспертов ИКАО по правилам полетов (ICAO OPS Panel), то есть скорее всего новые стандарты будут признаваться.
Официально эти материалы еще не опубликованы, но могу кинуть на мыло рекомендации этой Группы с обоснованиями, которые обычно с малыми изменениями принимает АНК ИКАО и все, далее поправки в Приложения.
Кроме того, эта проблема (ETOPS vs LROPS) уже года 2-3 обсуждается в авиационной периодике. США давят, ЕС (Эрбас) вяло сопротивлялся, но вроде сдались...
OPERATIONS PANEL (OPSP) SEVENTH MEETING
Montrйal, 8 to 19 May 2006
Agenda Item 1: Extended diversion time operations
1.1.1 The Operations Panel (OPSP) was tasked to review existing Standards and Recommended Practices (SARPs) and guidance material pertaining to extended range operations for aeroplanes with two or more engines. This tasking is expressed in ANC Task No. OPS-0006, and was
first considered during OPSP/6 in 2003. Subsequently, in its review of the OPSP/6 recommendations, the ANC determined that the proposals were not sufficiently mature and directed the OPSP to continue work on this item. Work progressed through the Extended Range Sub-Group (ERSG) of the OPS Working Group, culminating in recommendations made during OPSP Working Group of the Whole 6 (OPSP WG-WHL/6) in October 2005. These recommendations were discussed during OPSP WGWHL/6, and resulted in the proposal that is presented to OPSP/7.
1.1.2 On long range operations of aeroplanes with more than two engines, there is a risk of insufficient fuel to return to the point of origin or to continue on to the destination if there is a decompression in a cruise flight, which forces the flight to be operated at a lower altitude. (Probability of a decompression is in the order of one in a million (10-6)). Further, aeroplanes may not have system capability to support all possible diversion times. Therefore, for aeroplanes with more than two engines, it is proposed to establish explicit requirements that assure safety of operations on long routes in remote, isolated regions of the world. Areas of the world where routes have a diversion time of less than 180 minutes generally have a sufficient number of alternates available. However, routes that have a diversion time of more than 180 minutes are in remote areas of the world with a limited number of enroute alternates. The proposed requirements for three and four engine aeroplanes will only apply on routes where the diversion time to the nearest alternate is greater than 180 minutes recommended threshold time.
1.1.3 The ANC tasking also referred to operations in polar areas, which have a sufficient number of enroute alternates to permit operation in those areas with less than 180 minutes diversion time. However, during the winter months many of these enroute alternates may not be available, which could possibly compromise the safety of operations in those areas. To assure the safety of those operations, it is proposed that the State of the Operator consider identifying and designating areas of the world in which the diversion time is less than the threshold time. In these areas it is deemed necessary to apply certain elements of the extended diversion time operations procedures. These should include procedures that deal with flight dispatch requirements and operational principles. Such areas, as designated by the State of the Operator, are applicable only to those operators whose Air Operator Certificate (AOC) is issued by that State of the Operator.
1.1.4 The proposal does not require new certification for currently certified three and four engine aeroplanes. Further, the proposal will permit States to set a date when modification to the cargo fire suppression capability will be required.
Boeing announced today it has received type-design approval from the U.S. Federal Aviation Administration (FAA) for up to 330 minute extended operations (ETOPS) for its 777 fleet.
The authorisation allows 777 customers who purchase or already operate 777-300ER (extended range), 777-200LR (longer range), 777 Freighter and 777-200ER models equipped with General Electric engines to fly up to 330 minutes from an alternate airport. FAA approval for the 777-200ER equipped with Rolls-Royce and Pratt & Whitney engines is expected to follow over the next few months.