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Old 14th Sep 2011, 07:17
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AVIATROZ
 
Join Date: Jan 2011
Location: asia
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INSTRUMENT QUESTIONS

Q1. The ISA pressure for 18000feet are:
anS. 506hpa
plz Someone guide how to cal pressure change with altitude.

Q2.An inc. of 0.15Mach result in an inc. of 93kt TAs of an a/c. the local speed of sound is:
ANs-620KTs
PLZ guide how to solve this problem

Q3.An a/c is flying at 400ft from a high temp area to a cold temp area where the temp diff. is 20degree. what will be actual height of a/c:
Ans-3680feet
{As we are going from low density to high density area........the true height should decrease right!....i get that point but how to calculate barometric error......because QNH is not given....only temprature diff of 20degree is given.........plz explain}

Q4.An inc. of 0.15Mach number result in an inc. of93kts in TAs.if temp deviation from IsA Is +9DEGREE,the FL is:
ANs--FL220{plz explain}

Q5.The atmospheric pressure at FL70 in a "standard +10" atmosphere is:
ANs---781.85HPa{plz expalin}

Q6.Cruising at FL390,M0.84 is found to give a TAs of 499kt.the IsA deviation at this level will be:
A. +17---------ans
B.+!9
C.-17
{i m getting my ans as +22degree plz help}
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