1.

ADD is a secondary flight instrument.(a) True(b) FalseI had been asked this question in examination.This interesting question is from Measurement of Air Data in division Atmosphere and Air Data Measurement of Aircraft Performance

Answer»

The correct answer is (a) True

Explanation: The secondary flight INSTRUMENTS are air temperature sensor and ADD’s. The ALTIMETER, INDICATOR and mach meter are the primary flight instruments. The primary instruments are mechanical instruments whereas the secondary instruments are electrical power based instruments.



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