INDIANAPOLIS -- Tony Renna was below the normal racing line when he had a fatal crash at Indianapolis Motor Speedway, the IRL said Friday.

Renna lost control of his car, went airborne and crashed while testing for his new team Oct. 22. Taking his first laps with Ganassi Racing, Renna was clocked at 227 mph just before the crash in the third turn on the 2½-mile oval.

IRL spokesman John Griffin said director of operations Brian Barnhart confirmed Renna's path below the line but did not blame the crash on "driver error" because there are still too many unanswered questions.

Griffin said there is no timetable for completing the investigation.

"What we have right now is inconclusive, until we're able to retrieve the (onboard computer) data," he said.

The private test session was closed to the public and the media, so there was no videotape or photographs of the crash.

"At this point, a lot of the measurements are completed," Griffin said of the skid marks and angle of impact. "It's just a matter of retrieving this data right now. Some of the chips in the data box were damaged. We're trying to see if they can be saved."

Barnhart told The Indianapolis Star that the investigation has started with the point of impact and will move back to the cause of the crash. The IRL has not released autopsy findings.

Despite damage done to the façade of the North Vista grandstand, he said Renna's injuries probably occurred when the car hit two fence poles.

Barnhart said both of the car's right-side tires remained inflated, indicating the impact was on the left side. But how the car got airborne is still unknown.

Ganassi officials are not involved in the investigation, a team spokesman said.