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What is ETOPS?Under normal operation when flying over water or remote areas, the maxi-mum distance to be away from an a-dequate en-route alternate airport is the distance that equals 60 min flight time in still air and standard condi-tions at normal one-engine-inopera-tive cruise speed.

Any operations planning to fly a twin-engine public transport aircraft be-yond this distance from an adequate airfield will be considered to be o-perating under ETOPS which further requires that the aircraft is ETOPS cer-tified and that the chosen en-route al-ternates are suitable as per the ETOPS requirements. ETOPS is valid for Per-formance Class A for aircrafts having a maximum approved passenger seat-ing configuration of 20 or more and a MTOM more than 45.360 kg.

Approval to operate between 60 and 207 minutes must go through the lo-cal authority. The operator must also address several other items to fly in remote areas worldwide according to JAR-OPS 1.246(a) such as e.g. ETOPS maintenance requirements.

ETOPS calculation with PPS complies with the regulations stated in JAR-OPS 1,246. With the ETOPS module, it is fast and intuitive to perform flight planning for trips overseas or in re-mote areas where distances are great-er than 60 minutes between suitable en-route alternate airports.

PPS ETOPS Calculation PrinciplesPPS will calculate ETP (Equal Time Point) for each ETOPS segment (out-side 60 min zone). Diversion plans will show if you have a critical fuel scena-rio and at which way point.

The critical fuel scenario will show you PLANNED FUEL REMAINING, MIN FUEL REQUIRED and fuel calculation for each emergency cruise profile. The PPS ETOPS module will provide you with a quick-reference ETP-(Equal Time Point) list for each emergency diversion plan the operator needs to prepare for. This ETP list will make the crew capable of making the correct decision faster if experiencing an in-flight emergency.

The ETP plan below shows you which airport to divert to in case of an emer-gency en-route. It is divided into 3 sections (please see the next page).

ETOPS - Extended Range Twin Engine Operations Performance

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Section 1

1: ETP 2 (Equal Time Point) 2: EET passing ETP (Estimated Elapsed Time) 3: LAT/LONG at ETP 4: ICAO, MORA, FL, TRK, DST, TIME, TAS, GS → WIHH or YPLM 5: Planed fuel remaining at ETP to DEST (Including ALT, Holding, Contingency) 6: Fuel min required at ETP to DEST (Including ALT, Holding) 7: -1 Engine inoperative MCT, Decompression, Anti Ice ON. 8: -1 Engine inoperative LRC, Anti Ice ON. 9: -2 Engine LRC, Decompression, Anti ice ON.

Section 2

This ETOPS ALTN-list shows the time window that the selected en-route alternate airports have to be suitable (open) regarding the surface weather forecast in order to comply with this particular flight. In the above example (marked with an arrow) WIHH needs to be open from 12:47 which is 1 hour before ETO and until 17:10 which is 1 hour after ETA after the aircraft has diverted from the ETP.

Section 3

ETOPS Entry/Exit points are stated here if the aircraft is flying outside 60 min. circles from adequate airports.EET indicates elapsed flight time.ETA - actual time (UTC) that the aircraft will enter or Exit ETOPS area. APT is referring to which adequate 60 min airport circle, aircraft is leaving or entering.

In the above example, the aircraft will after 2:35 flight time at 14:35 UTC leave the 60 min circle from WIHH at position S12:56.8 E109:13.2. After 3:02 flight at time at 15:02 UTC, the aircraft will Exit ETOPS area when inside 60 min circle from YPLM.

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Diversion planThis diversion plan shows you where to divert to in case of an engine failure en-route. It is divided into 3 sections (see below).

Section 1 (the black arrow →)12:59 is ETA to specific ETP.0:59 is EET to specific ETPTODAK 72 means that you are 72 NM to TODAK.ETP exact position is S01:24.3 ; E104:56.5Eng. failure at this point means same flight time to WMKK or WIHH

Section 2The arrows indicate which lines belong together.→ ICAO / IATA refers to WMKK and WIHH (Codes for KULALUMPUR and JAKARTA).→ TAS refers to 304 and 299 (True Air Speed to KUL and HLP).Diverting to KUL gives you: TAS= 361, GS= 362, TT= 322, (forecasted) wind= 124/12, (forecasted) TMP= ISA +17, ACT TMP= -20

The diversion is planned in FL260. This is the FL in which the aircraft is capable of cruising with the scenario of having one engine inoperative without a decompression situation. PPS takes into account the actual weight and outside air temperature to determine this FL. To do this, an exact copy off the performance data is installed when you implement the PPS system and/or new aircraft types.

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Section 3

ETA = Estimated Time of Arrival at either WMKK or WIHH)TTG = Time To Go from ETP to either WMKK or WIHH)MREQ Alt = Fuel needed to make the DIVERSION (Including fuel to Alt + Holding but not contingency)Fuel Dest = Fuel needed to make the DESTINATION (Including fuel to Alt + Holding fuel, no contingency)EFOB = Estimated/planned fuel on board at Critical fuel point.A critical fuel point is the point(s) were you are the furthest distance away from a suitable en-route alternate airport. You have a critical fuel scenario when you do not carry enough fuel to fly from the critical fuel point to the suitable en-route alternate airport.

This example shows that your EFOB is MORE than the MREQ ALT fuel. In other words we have enough fuel to divert in case of a decompression.

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OxygenThe → shows you how many minutes you have in FLXXX before you have to descend to FL100. In this example you have 0 minutes and therefore you must descend to FL100 (ETOPS)

ETOPS planning profile

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Examples of PPS diversion plans

PPS diversion plan for:Two engines Long Range Cruise (e.g. sick passenger onboard).

PPS diversion plan for:One engine Max Cruise Thrust, anti ice on, oxygen use.

PPS diversion plan for:Two engines Long Range Cruise, decompression, anti ice on.

For any immediate questions, please contact the AIR SUPPORT Sales Department on +45 7533 8889 + Press 2 be-tween 0900 CET – 1600 CET Monday through Thursday and 0900 CET - 1530 CET on Fridays or send your question(s) to sales@airsupport.dk.