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P-NPA 20 LROPS General presentation

P-NPA 20 LROPS General presentation. Summary of activities of the ETOPS/LROPS JAA/WG Section1/section2 in accordance with JAR-11 principles and RST directions: Enabling requirements in JAR-21, JAR-25, JAR-E, JAR-OPS1 A single set of AMC material for all requirements.

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P-NPA 20 LROPS General presentation

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  1. P-NPA 20 LROPSGeneral presentation OST ETOPS/LROPS presentation

  2. Summary of activities of the ETOPS/LROPS JAA/WG • Section1/section2 in accordance with JAR-11 principles and RST directions: • Enabling requirements in JAR-21, JAR-25, JAR-E, JAR-OPS1 • A single set of AMC material for all requirements. • Arrange consistency of ETOPS and LROPS requirements • Compare with equivalent ARAC material • Response to concerns expressed by AEA. • Involve business aeroplanes community OST ETOPS/LROPS presentation

  3. Summary of activities of the ETOPS/LROPS JAA/WG • Terms of reference • “It is proposed that a consistent set of safety criteria, design and operational, be developed for all commercial long range operations applicable to two and more engines aeroplanes. • … • To assess existing design, maintenance and operational requirements that may be applicable to extended range airframe/engine combinations and assess their applicability to existing and future operations. • … • To maintain a working relationship with FAA in order to harmonise the requirements and advisory material.” OST ETOPS/LROPS presentation

  4. ETOPS definition • Applies to operation of two engines aeroplanes over a route that contains a point further than 60 mn at the one engine inoperative cruise speed from an adequate aerodrome. OST ETOPS/LROPS presentation

  5. ETOPS 180min area twins YFB 180min one engine out MCT= 1260nm OST ETOPS/LROPS presentation

  6. LROPS definition • Applies to operation of three and more engines aeroplanes over a route that contains a point further than 180 mn at the one engine inoperative cruise speed from an adequate aerodrome. OST ETOPS/LROPS presentation

  7. LROPS 180min area quads YFB 180min one engine out LRC= 1450nm OST ETOPS/LROPS presentation

  8. NPA lay-out. Requirements • CS-21 §21.3 amended to mandate ETOPS IFSD reporting. • CS-25.XX (new) • Each applicant seeking approval for ETOPS/LROPS must comply with the requirements of JAR-25 considering the maximum mission time and the longest diversion time for which approval is being sought. Time limited systems limitations should be established. • CS-E.YY (new) • Each applicant seeking approval for ETOPS/LROPS capability must show that the engine will achieve an IFSD rate that is compatible with the safety target associated to the maximum mission time and the longest diversion time for which approval is being sought. • JAR-OPS1 • Amend §JAR-OPS1.245 for new LROPS threshold for 3-4 engines aeroplanes, engine inoperative speed revised) • § JAR-OPS1-246 to cover ETOPS/LROPS. OST ETOPS/LROPS presentation

  9. NPA Lay-out. • GAI-20 ACJ 20x6 • Section1: Two-engine large transport aeroplanes with either 20 or more passengers or a take-off mass of more than 45360kg • Section 2: Three and four-engine large transport aeroplanes with either 20 or more passengers or a take-off mass of more than 45360kg. • Section 3: Aeroplanes with 19 or less passengers and a take -off mass of less than 45360 kg. OST ETOPS/LROPS presentation

  10. NPA format. • GAI-20 ACJ 20x6 • Content • Certification: type design considerations • Review of design • Catastrophic loss of propulsion and power generation is extremely improbable • IFSD objective for two engine aeroplanes • Review of ETOPS/LROPS critical systems. Determination of systems limited maximum diversion time • AFM, CMP document, MMEL • Prerequisite service experience or early ETOPS/LROPS approval OST ETOPS/LROPS presentation

  11. NPA format. • GAI-20 ACJ 20x6 • Content • Operations • Flight planning • En-route suitable diversion airfields • Fuel reserves must provide for diversion in critical contingencies (engine failure, depressurisation, icing) • Despatch minima • Condition of adequate alternates is updated in flight ( weather minima) • Recovery plan is available in severe climate areas • Crew training OST ETOPS/LROPS presentation

  12. NPA format. • GAI-20 ACJ 20x6 • Maintenance • IFSD engine monitoring is necessary on two engine aeroplanes (and eventually on 3 and for engines aeroplanes where a dual engine failure is catastrophic). See JAR-OPS1.505) • Maintenance precautions on ETOPS and LROPS critical systems • Maintenance crew training OST ETOPS/LROPS presentation

  13. NPA format. • GAI-20 ACJ 20x6 • Business aeroplanes specific provisions • Same, but requirements adapted to simpler design • Ops requirements adapted to the number of passengers (RFF, recovery plan) and the kind of operations (non-scheduled) • Integration of AMC OPS 1.245 (a)(2) for operation of two engines business aeroplanes between 120 and 180 mn. OST ETOPS/LROPS presentation

  14. Main differences with FAA NPRM • Type design • IFSD rate objective for twins over 180 mn diversion time (historical difference) • JAA: decreasing curve down to 1x10-5/FH( 25.1309 objective) • FAA: flat curve at 1x10-5/FH • Icing capability • Fuel feeding in emergency electrical conditions OST ETOPS/LROPS presentation

  15. Main differences with FAA NPRM • Operations • - FAA and JAA are consistent on two engines aeroplanes and 3-4 engines aeroplanes above 180 mn diversion time • - Differences • on polar designated areas • intermediate FAA step at 240 mn diversion time • - Recovery plan required by ARAC on all alternate airfields. OST ETOPS/LROPS presentation

  16. Main differences with FAA NPRM • ETOPS vs LROPS • FAA NPRM refers to ETOPS for all operations requiring planned en-route alternates due to similarities in the OPS requirement • JAA refer to ETOPS for twins and LROPS for 3 and 4 engines aeroplanes due to differences in threshold, flight operations and design considerations. OST ETOPS/LROPS presentation

  17. Response to AEA concerns • Do not jeopardise existing operations • Analysis of the 2 examples given: Anchorage to Tokyo is not an LROPS route (JAA criteria). LAX to Tahiti could be marginally LROPS (see also fuel requirements) •  LROPS rules do not affect existing operations • Grand father rules. 3 and 4 engines aeroplanes from an existing Type Certificate are eligible for LROPS. However CPR certification rules apply to significant changes. • No JAA polar designated areas would apply to existing polar routes OST ETOPS/LROPS presentation

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