Originally Posted by
Hartford
The ADS-B reported altitude of 1700MSL would put them very close to the ground in that area. Less than 200 feet. Assuming the ADS-B reported accurately.
The day of this accident, we had an unusually high pressure system over the area. In Eastern Texas and Louisiana we had altimeter settings of 30.56 and higher. That would cause transponder pressure altitudes to read 500-600 low on these readouts. With that adjustment, they would have been flying around 800-1000 feet AGL.