HOWEVER, he now tells me that he has lost confidence in it because it had to have the recalibration. I explained to him that any precision instrument needs to be recalibrated at times, but he is adamant that the Phantom is now unreliable. So... I'm short on reasons why IMU would need to be recalibrated.
The National Highway Traffic Safety Administration estimates that drowsy driving was responsible for 72,000 crashes, 44,000 injuries, and 800 deaths in 2013.4 However, these numbers are underestimated and up to 6,000 fatal crashes each year may be caused by drowsy drivers.5-7.
Rollover Accidents, Crash, Wrecks: Pictures There are about 280,000 rollover accidents in the US each year, resulting in about 10,000 fatal accidents. SUVs with a high center of gravity, are more likely to involved in rollover accidents than typical sedans.