Capt. 'Sully' Sullenberger 'STACHELESS ... Pilot Error???

10/21/2016 6:27 AM PDT

Capt. 'Sully' Sullenberger is 'STACHELESS

Don't know how we missed this ... but did you know Chesley "Sully" Sullenberger -- HERO of Flight 1549 -- SHAVED HIS MUSTACHE?!?! 

Sully is featured in a new commercial for St. Jude Children's Research Hospital (#hero) -- when we realized he's chopped off his signature lip warmer.  

Don't get us wrong, he still looks great but we gotta ask ...