CAA NZ ATPL Theory - Flight Navigation General Practice Questions - CAA NZ ATPL Theory - Flight Navigation General (New Zealand) Exam

An INS outputs navigation parameters directly to its own control display unit, whereas an IRS supplies raw attitude and inertial data to the Flight Management Computer (FMC). An INS uses Ring Laser Gyroscopes, whereas an IRS relies exclusively on mechanical spinning gyroscopes. An INS requires continuous satellite updating, while an IRS operates entirely self-contained without ground or satellite signals. An INS operates only in strapdown configuration, while an IRS always uses a gimballed stabilized platform.