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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > General Navigation > After the Boeing 737NG IRS has completed ATT-mode releveling and the crew has manually entered the initial magnetic heading, what information does this backup mode provide?

573 - ATPL Question Bank in English - After the Boeing 737NG IRS has completed ATT-mode releveling and the crew has manually entered the initial magnetic heading, what information does this backup mode provide?

Question 573 - General Navigation - ATPL - Airline Transport Pilot Licence

Attitude only, with no heading output even after manual heading initialization.

The full normal-navigation outputs, including position and groundspeed.

Attitude and heading; heading requires periodic cross-checks and manual updates, and normal-navigation position and groundspeed are unavailable.

Altitude, heading and navigation position, with no attitude information.

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