I find it hard to believe...
 

... that my 270kt ground speed from Sonderstrom to Ammasalik hasn't been beaten many times over. I think the really fast ones are just holding back!

S76C Bass Strait 209Kts cruise.

Couple of the guys had 226 Kts straight and level a couple of months ago.

110 Kts in a KH-4!

Well there are some speed demons out there...

My best was chugging uphill to a scene call flying a BK-117 A4 for 49 minutes and collecting the patient and being at the hospital in 18 minutes...sustained ground speed for 1 minute of 201 kts!!!

Once was on an IFR flight in a Bell 212 (Cdn military version CH-135) chugging along at 80 kts G/S when ATC asked what kind of aircraft we were...we responded that we were a

..."CH135, a military version of the Bell 212."

An incredulous controller responded:

"You're a HELICOPTER?????", to which we replied in the affirmative. A moment passed before we queried the controller as to his curiosity.

It turns out that he thought we were a US military KC135 and he was wondering just what the heck we were doing with an 80 kt G/S....

LOL

Better than being confused with a 135.....you should have heard the Italian controllers at Malpensa Int'l while flying a CH-47C slowed....hovered....and backed up on a GCA approach using the VASI and ILS indications.....Mama mia! Called the outer marker twice on one approach!;)

My best was 221kts, at about 300' agl in a Chinook. We still had a few knots of airspeed we could have added, but as that was already 20 kts over my previous best I didn't feel the urge!

My slowest;70 kts indicated while moving backwards into gully with winchman out on 100ft of cable. (Wessex mk2)

(Winching Downs Syndrome children off the side of Ben Nevis during annual "Ben Race" which was hit by an unexpected hill storm)

Bravo Bertie...
 

that IS excellent.
"tell the kids today that and ....."

Bertie....don't yer knackers get in the way of the cyclic? The man needs a wheelbarrow to get to and from the aircraft.

To John Eacott

'Ere digger
Are you somehow doubting the veracity of my claim?
Put it this way when I popped out of the trees in a hover the ASI was reading 60kts. I had the choice to surely get it wrecked on the ground or leg it for cover. (Not something to be repeated.);)

Remember one VERY dark, dark night, solo, flying back to Stanley FI from West Island. Nearly missed the airport with 215 on the Gazelle mini-tans - thank god for radar!!!! Sure had sweaty palms that night!!!!!!:cool: :cool: :cool: :cool:

186 knt ground speed in a Gazelle last year with a very stiff tail wind Huddersfield to Blackpool still 20% left on the throttle, one week later Sherburn to Blackpool in a new R22 Blackpool approach asked if we we intending to get any closer than Kirkham after we had run head first into a small gale with 30+ knt winds and gusts, we were almost stationary with an indicated 60 knts on the IAS:D

This seems to me to be a rather pointless discussion. I've seen 170+ knots in a 412, & was impressed, but seeing the same groundspeed in an S76 is unremarkable.

220kts in a s76, making a dash 8 driver confirm with atc that we were indeed a helicopter....

Fastest in one of HM finest grey flying trucks, 180kts off Scotland on JMC,

Slowest, 30kts for a 3 mile transit with two boxed rotor blades underslung:(

Made Oakey-Willytown IFR in one hop once (about 370nm)in a Seaking with 10 people and a poo load of bags, must have been in the region of 150kts. Amazing what you can do on the way home. :D

188 kts (GPS) H500 ER on descent from 12 and a half over the Goroka gap PNG

Highest for me was 20,000' (ISA+20) just to see if it would do it after dropping pax in the sticks near the infamous Mt. Kare

And the lowest.....??
 

Without incriminating one self........what is the lowest you have flown.........for me .....- [minus] 125 ft AMSL [or should that read BMSL...?

Lake Eyre....South Australia.

-210' MSL. Furnace Creek Airport in Death Valley, California.

In a CH-53E, brand new out of the Stratford, Conn. factory, enroute to CA with a fine Northeastern cold front pushing us at 10,000 feet, Houston Center reported us at 258Kts ground speed. They asked for and recieved an ammended flight plan so they could see a helicopter that could turn the numbers in a low approach. 1991 in the late fall.

:D

Ah but Stan.....this is safe talk!;)

No memorable high ground speeds, but lowest ground speed occurred on several flights at 20,000 ft in a BO 105 in 1988, on engine trials.

We were on an assigned Block VFR heading, westbound out of Fort Erie. On at least 2 flights at Vne for that altitude (60 KIAS, I think) we kept drifting to the east, back into US airspace. Buffalo Center kept getting rather upset. They eventually got used to us motionless or backing up at 20,000 ft, but the airline pilots never did.