> with a maximum indicated air speed of 358kt (662km/h), or Mach 0.9, recorded What? 358 knots is much closer to mach 0.5 in air. 358 meters/second is close... 662 mph is close.
Here's a link to help explain the differences between IAS/CAS and TAS: https://www.decodedscience.org/airspeed-of-an-aircraft-indic...