Contents
What is unreliable airspeed?
In the event of unreliable airspeed indications, a crew should fly the approximate pitch and power normally expected at that stage of flight until it is discovered which (if any) system is indicating correctly or the problem is resolved.
What is the advantage of using Mach meter over airspeed indicator?
A machmeter is an instrument which provides an indication of the Mach Number, (M), which is the ratio between the aircraft true air speed (TAS) and the local speed of sound (LSS). This ratio, which equals one when the TAS is equal to the local speed of sound, is very important in aircraft operating at high speed.
What to do in the event of unreliable airspeed indications?
In the event of unreliable airspeed indications, a crew should fly the approximate pitch and power normally expected at that stage of flight until it is discovered which (if any) system is indicating correctly or the problem is resolved.
What makes the indicated airspeed ( IAS ) work?
Indicated Airspeed (IAS) is a function of the difference between: the Total Pressure (Pt) measured by a forward facing pitot head or probe and; the Ambient or Static Pressure (Ps) measured at static plates or ports. Complete or partial blockages of pitot heads and static ports can confuse an unprepared crew and may be caused by:
What is the correct crew procedure for an unreliable?
The philosophy for processing the anomaly is described in the “UNRELIABLE AIRSPEED INDICATION / ADR CHECK PROCEDURE” that is in Flight Manual (AFM) and transcribed in the Airbus FCOM and the Air France Operations Manual.
Why do I get an overspeed warning at 250kts in Microsoft Flight Simulator?
If you go above 250 knots, the overspeed warning will sound. As far as why that is the case, in the United States you are limited to a speed of 250 KIAS below 10,000 FT. I would imagine this is also the case for most other countries.