Fastest commercial jet airliner speed?

[Barchettaman]

Returning from NY yesterday with a 115 mph tailwind the Flight Tracker thingy had our ground speed at 615 mph. The plane was a 767 I think.

This got me thinking - Concorde and Concordeski excepted, what's the fastest ground speed that commercial jets achieve?

At 615 mph we can't have been that far off Mach 1, surely?

[Barchettaman]

Thanks all, really interesting stuff.

[Barchettaman]

Kempus said:

The largest commercial airliner to break the sound barrier was that of a China Airlines B747 -SP.

We talk about it occasionally in CRM when discussing jet upset and the situation these guys got themselves in was somewhat incredible.

Kempus

Did it really? The (German) article I read said it topped out at Mach 0.99.

The description of the incident made me think it was a flight I was quite glad not to have been on.