DHC-7. Even empty it would take imagination to call it performance. We once positioned one from Bangor direct to a UK air display - about 9 hours airborne I should think, by which time it was pretty light. Not having a regular sequence to perfom we decided to do a standard four engined yawn but preceded by the old Britannia display entry which was pleasant and effective - when done in a Britannia. Downhill to Vmo to the start of the display line, then flight idle allowing the speed to bleed off while faintly whistling along level to the end. The SH5 appeared to stop about half way down the line with no option but to go back to torque 300 and more noise. As for runway "performance" it's no Herk even empty, no matter how many Muricans tell you they jumped out of them in 'Nam. God Bless.