ASI

Question 1

ASI
WHITE ARC

Answer 1

LOWER: VSo ,stall speed at max all up weight in the landing configuration (full flaps,gear down,power off)

HIGHER :end is VFe ,fastest speed with flap extended

Question 2

Green arc
Normal operating speed range

Answer 2

~limited at the LOWER END by VS1 ,which is the minimum steaedy flight speed in a specific configuration (clean for light a/c)

~the upper limit of the green arc is VNo ,max normal speed

Question 3

Yellow arc

Answer 3

~extends from Vno at the lower end ,to Vne at the higher end.
~VNe : never exteed speedd

Answer 4

The ASI Under reads the TAS at altitude ,the discrepancy being called ,density -error

The ASI can only indicate TRUE AIRSPEED TAS at the density for which the ASI is callibrated (ISA MSL)
To maintain the same IAS at altitude ,the TAS need to fatster (less denisty) ,so the ASI under reads.
If below MSL ASI will over read the TAS

Question 5

Tas above 300kts

Answer 5

Correction for compressibility if you are above 300kts

Question 6

Gps and unreliable airspeed

Answer 6

~clock error
~orbit error
~position error
~climb error

Question 7

Asi blockage

Answer 7

PUD : pitot blocked ,UNDER READS in a descent
(Static presure increases in the descent ,pressure capsule capsule)

POC: pitot blocked, OVER READS in a climb
(Static pressure decreases in the climb,pressure capsules expands ,over reads)

Question 8

Static blockage

Answer 8

SOD : static blocked over reads in descending
(Pitot /static pressure )

Question 9

Asi static leak pressuried