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#1
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Quote:
A very simple formula is TAS = IAS + (2% IAS per 1000 ft altitude). So at 5,000 ft if you are indicating 165mph, your TAS is 181mph, converted to Kts is 156kts. |
#2
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Your IAS of about 140 knots or 165 mph is in line with what my 73G model indicates. My true airspeed is usually about 180-185 mph or 155-160 knots. It does not sound as if your indicated airspeed is obviously wrong but I cannot speak for the angle you mention as the 1973 models have a completely different pitot tube arrangement altogether than the earlier models.
Ed |