Once saw a gs of 680 in a LR-60, needless to say it was in the winter and we had a healthy tailwind. And I remember years ago in a PA-44 having a neg gs in slow flight config

168kts in a C-172m from 1976 on my way from Del Rio to San Antonio in it. The priest I was flying there took a few pictures. Not digital though but I have it hanging up in my office.

645 the other day in a 145XR, IAH-BNA

DAMMN Son!!!!:eek: :eek:

I remember about 635 in an ERJ a couple years ago BNA-EWR. Nice tailwind.

think my best was a sustained cruise of 152kts in a 172 from DEN-MSP.

I also have a video of us doing slow flight into the wind down near DAL. The video shows a view down at the ground, and the right main wheel isnt moving, relative to the ground. I'll try to locate it, but dont know how to upload it to here.

Yeah, that was some crazy $hit, daddy! :p

Our tailwind was up around 200kts. I wish I had my god-amn camera.

SAN-PHX (massive tailwind) 190+ in a 172
PHX-SAN (massive headwind w/ lee side mountain downdraft, Vx climb) ATC asks what type aircraft, I respond CE-172, ATC says "Oh. You're doing about 10 knots GS"

Sometimes it would take an hour or more to push through that downdraft, in a Vy or Vx climb.

I hate fighting strong headwinds in a 172. The worst is looking out the window and watching cars go faster then you.