A109S

[Same again]

Can anyone tell me the average cruise fuel consumption for the AW109S Grand with PW207 engines? Thank you.

[FlyLow&Slow]

Can anyone tell me the average cruise fuel consumption for the AW109S Grand with PW207 engines? Thank you.
Mass 3000, 2000ft, OAT 20°C, ECS ON, TAS 140 kts (Recommended cruise), Tq 69, 220 kg/h;
Mass 3000, 2000ft, OAT 20°C, ECS ON, TAS 130 kts (Max range cruise), Tq 61, 200 kg/h;
Most pilots though cruise at 150 KIAS (155 KTAS), Tq 90, 250 kg/h.

[Same again]

Thanks very much.

[ShyTorque]

Mass 3000, 2000ft, OAT 20°C, ECS ON, TAS 140 kts (Recommended cruise), Tq 69, 220 kg/h;
Mass 3000, 2000ft, OAT 20°C, ECS ON, TAS 130 kts (Max range cruise), Tq 61, 200 kg/h;
Most pilots though cruise at 150 KIAS (155 KTAS), Tq 90, 250 kg/h.

From fourteen years of flying nothing but this type, I’d say that most don’t need 90/90% Tq to achieve 150 knots IAS, unless at MAUM.

I set approximately 83/83 and see 150kts indicated. Setting 90/90% is very likely to put the aircraft very close to, if not beyond, Vne, especially in turbulence because these aircraft are slippery beasts. The IAS warning is likely to be activated often and each excursion will of course be logged in the DAU memory.

83/83% will use something closer to 230 kg/h.

[ApolloHeli]

From fourteen years of flying nothing but this type, I’d say that most don’t need 90/90% Tq to achieve 150 knots IAS, unless at MAUM.

I set approximately 83/83 and see 150kts indicated. Setting 90/90% is very likely to put the aircraft very close to, if not beyond, Vne, especially in turbulence because these aircraft are slippery beasts. The IAS warning is likely to be activated often and each excursion will of course be logged in the DAU memory.

83/83% will use something closer to 230 kg/h.

FlyLow&Slow did say "Mass at 3000"

[ShyTorque]

FlyLow&Slow did say "Mass at 3000"

I’m not sure what your point is. The MAUM of a 109S is 3175 Kgs.

[Same again]

Thanks for the input. I have been flying the 109E and before that the 139 so there are many similarities in flying techniques. 230kgs at 83% seems like a good figure to plan on for the 109S. Much appreciated.

[garsr1]

ShyTorque is spot on. If its bumpy I run it at 80%, if smooth 85%. Runs around at 155kts all day long.