Pilot and student pilot community. Share your pilot lessons or aviation stories.

Heading Indicators (Part Two) Attitude and Heading Reference System (AHRS)

in Flight Instruments

Electronic flight displays have replaced free-spinning gyros with solid-state laser systems that are capable of flight at any attitude without tumbling. This capability is the result of the development of the Attitude and Heading Reference System (AHRS).

The AHRS sends attitude information to the PFD in order to generate the pitch and bank information of the attitude indicator. The heading information is derived from a magnetometer which senses the earth’s lines of magnetic flux. This information is then processed and sent out to the PFD to generate the heading display. [Figure 7-26]

Attitude and heading reference system (AHRS)

Figure 7-26. Attitude and heading reference system (AHRS).

51DPcJTcMwL._SX381_BO1,204,203,200_Learn more about all of your flight instruments with the Instrument Flying Handbook. This is the FAA’s primary pilot resource for instrument flight rules (IFR) covering everything pertinent to operating an aircraft in instrument meteorological conditions (IMC) or without reference to outside visuals, relying solely on the information gleaned from the cockpit.


Comments on this entry are closed.

Previous post:

Next post: