Three Engine Ferry FlightAirbus improves dispatch case

Presented by

Boris HENRYFlight Operations Engineer

OLM FBW 2006 – Toulouse – 26-28 September 2006

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Three Engine Ferry Flight / Airbus Improves Dispatch 2 OLM FBW 2006

Three Engine Ferry Flight

Three engine ferry flight for the A340 is certified according toa specific CRI (certification review item).

An additional engine failure is taken into account for takeoffflight path computation.

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Three Engine Ferry Flight / Airbus Improves Dispatch 3 OLM FBW 2006

Three Engine Ferry Flight

A340 hydraulic system:

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Three Engine Ferry Flight / Airbus Improves Dispatch 4 OLM FBW 2006

Three Engine Ferry Flight

If unserviceable engine is an outerone, additional failure of the otherouter prevents gear retraction

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Three Engine Ferry Flight / Airbus Improves Dispatch 5 OLM FBW 2006

Three Engine Ferry Flight

Initial certification of the A340-200/300: worst caseUnserviceable engine: 1 outer

Additional failure : 2nd outer engine

Consequence: takeoff flight path computed with landing geardown.

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Three Engine Ferry Flight / Airbus Improves Dispatch 6 OLM FBW 2006

Three Engine Ferry Flight

For the A340-500/600, 2 cases have been certified: 1 outer engine unserviceable

Takeoff flight path computed with gear down

1 inner engine unserviceable

Takeoff flight path computed with gear up

Same is now being certified for the A340-200/300

Dispatch is improved

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Three Engine Ferry Flight / Airbus Improves Dispatch 7 OLM FBW 2006

Three Engine Ferry Flight

Example: Bogota-Outer engine inoperative

MTOW # OWE

Flightimpossible

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Three Engine Ferry Flight / Airbus Improves Dispatch 8 OLM FBW 2006

Three Engine Ferry Flight

Example: Bogota -Inner engine inoperative

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Three Engine Ferry Flight / Airbus Improves Dispatch 9 OLM FBW 2006

Three Engine Ferry Flight

Increase inweight: # 16 tons

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Three Engine Ferry Flight / Airbus Improves Dispatch 10 OLM FBW 2006

Conclusion

With the initial three engine ferry flight certification , the A340-200/300 was very limited at takeoff: Fuel quantity limited, then limited range

Takeoff impossible from high altitude airports

With the new certification, with one inner engine inoperative: Better takeoff performance, then greater range

Takeoff at high altitude airport possible