A first-order surrogate would be true airspeed, from which, knowing the density altitude, indicated airspeed could be accurately calculated. Since the airplane’s relationship to the air ...

“We are formulating, with NTSB and Boeing, detailed inspections regarding the airspeed indicator,” he said ... Air said the problem was fixed, is it true the problem was cleared?" ...

"In the black box there were four flights that experienced problems with the airspeed indicator ... "Lion Air said the problem was fixed, is it true the problem was cleared?" ...

The “black box” data recorder from a crashed Lion Air jet shows its airspeed indicator malfunctioned ... “Lion Air said the problem was fixed, is it true the problem was cleared?” ...