( CNN ) -- When NASCAR team owner Jack Roush crashed his plane at an Oshkosh , Wisconsin , airport Tuesday night , the aircraft `` cartwheeled '' an undetermined number of times and ended up facing the opposite direction , National Transportation Safety Board spokesman Peter Knudson said Wednesday . Knudson said upon landing , the Beechcraft Premier jet , registered to Roush Fenway Racing LLC , rolled `` hard to the right , '' then its right wing dropped `` way down '' and struck a grass strip , and the plane flipped over at least once . The jet ended up facing north , though it had flown in facing south , Knudson said . The NASCAR owner was piloting the plane , which took off from Detroit , Michigan , Knudson said . The NTSB is leading the investigation into the accident . The Experimental Aircraft Association said in a statement Tuesday night that Roush 's passenger in the plane was Brenda Strickland of Plymouth , Michigan . Video showed the two of them walking away from the plane , which appeared to be split toward its midsection . The morning after the incident , Roush remained in serious , but stable , condition at Theda Clark Medical Center in nearby Neenah , Wisconsin , hospital spokeswoman Megan Wilcox said Wednesday . She said it was `` too early '' to say how long Roush would remain in the hospital . The facility was keeping details about Roush 's injuries private `` at the request of his family and racing team , '' Wilcox said . However , Roush 's racing team released a statement quoting attending physician Dr. Kevin Wasco as saying that Roush 's injuries are not life threatening . Strickland was brought to Oshkosh 's Mercy Medical Center , where she was listed in good condition , Mercy spokeswoman Maria Heim said Wednesday . The Experimental Aircraft Association 's annual air show , AirVenture 2010 , had just ended for the day at Wittman Regional Airport in Oshkosh when the crash happened at 6:15 p.m. , association spokesman Dick Knapinski said . The accident shut down the airport until its regular 8 p.m. closing time , but the airport re-opened Wednesday morning , according to Knapinski . He said Roush comes every year and `` does presentations as an airplane enthusiast . '' Knapinski said Roush owns one of `` probably fewer than 200 airworthy '' World War II-era P-51 Mustang fighter planes and Roush had been scheduled to give a presentation about his vintage prop plane Tuesday . Roush had also been slated to appear at the air show Wednesday , signing autographs and talking to NASCAR fans at the Ford tent . `` Roush Fenway Racing is NASCAR 's largest team operating eight motorsports teams . Four in the NASCAR Sprint Cup Series with drivers Matt Kenseth , Greg Biffle , Carl Edwards and David Ragan ; and four in the Nationwide Series with Edwards , Ricky Stenhouse Jr. , Colin Braun , Brian Ickler , and Paul Menard , '' said the statement from Roush 's racing team .
Notes : The NTSB says that team owner Jack Roush 's plane rolled hard to the right and cartwheeled upon landing . Roush was in serious , but stable , condition inside . Another passenger , Brenda Strickland , is in good condition . Roush , an aviation enthusiast , was heading to an air show to present his vintage plane and sign autographs .