Normally, investigators would be able to use pressure altitude to compute the barometric altitude displayed to the pilots. Because the pressure altitude parameter is invalid, they have to use ...

Many different factors affect the density of air. Most measurably, as altitude increases, air becomes less dense, decreasing atmospheric pressure. Standard altitude-pressure tables allow ...

"We are working to determine if this bad data for pressure altitude only affected the [flight data record], or if it was more pervasive throughout the helicopter's other systems. We will have an ...

NTSB moves to have the FAA permanently prohibit operations along this helicopter route.

Back home after his trip, he built this simple Temperature, Altitude and Pressure Display Device using a few off the shelf parts. Following a brief search, he zeroed in on the BMP 180 sensor ...