CAT.POL.A.215 En-route — one-engine-inoperative (OEI)

SI No. 1290/2024

Text in magenta in force from 30 October 2025

  1. The OEI en-route net flight path data shown in the AFM, appropriate to the meteorological conditions expected for the flight, shall allow demonstration of compliance with (b) or (c) at all points along the route. The net flight path shall have a positive gradient at 1500 ft above the aerodrome where the landing is assumed to be made after engine failure. In meteorological conditions requiring the operation of ice protection systems, the effect of their use on the net flight path shall be taken into account.

  2. The gradient of the en-route net flight path shall be positive at least 1000 ft above all terrain and obstructions along the route within 9,3 km (5 NM) on either side of the intended track.

  3. The en-route net flight path shall permit the aeroplane to continue flight from the cruising altitude to an aerodrome where a landing can be made in accordance with point CAT.POL.A.230 or CAT.POL.A.235, as appropriate. The en-route net flight path shall clear vertically, by at least 2000 ft, all terrain and obstructions along the route within 9,3 km (5 NM) on either side of the intended track, taking into account the following elements:

    1. the engine is assumed to fail at the most critical point along the route;

    2. account is taken of the effects of winds on the flight path;

    3. fuel jettisoning is permitted to an extent consistent with reaching the aerodrome where the aeroplane is assumed to land after engine failure with the required fuel reserves in accordance with point CAT.OP.MPA.150, appropriate for an alternate aerodrome, if a safe procedure is used;

    4. the aerodrome, where the aeroplane is assumed to land after engine failure, shall meet the following criteria:

      1. the performance requirements for the expected landing mass are met;

      2. weather reports or forecasts and runway condition reports indicate that a safe landing can be accomplished at the estimated time of landing;

    5. if the AFM does not contain en-route net flight path data, the gross OEI en-route flight path shall be reduced by a climb gradient of 1,1 % for two-engined aeroplanes, 1,4 % for three-engined aeroplanes, and 1,6 % for four-engined aeroplanes.

  4. The operator shall increase the width margins provided for in points (b) and (c) to 18,5 km (10 NM) if the navigational accuracy does not meet at least navigation specification RNAV 5.

Point (c)(3) will be replaced by the following text on 30 October 2025:

(3) fuel jettisoning is permitted to an extent consistent with reaching the aerodrome where the aeroplane is assumed to land after engine failure with the required fuel reserves in accordance with point CAT.OP.MPA.181, appropriate for an alternate aerodrome, if a safe procedure is used;