Final answer:
On the flight deck, standby instruments include a Standby Airspeed Indicator, Standby Attitude Indicator, Standby Altimeter, and a Standby Magnetic Compass, which are essential for flight control in case of primary flight display failure.
Step-by-step explanation:
The standby instruments available in the flight deck generally include:
- Standby Airspeed Indicator
- Standby Attitude Indicator
- Standby Altimeter
- Standby Magnetic Compass
These instruments are critical for maintaining control of the aircraft in the event that the primary flight display fails. A Standby Heading Indicator and Standby Vertical Speed Indicator are also commonly found in aircraft but are not part of the set listed by any options in the question provided. Modern airliners may also include an Integrated Standby Instrument System (ISIS) which combines several of these readings into one device.
The standby compass, also known as the magnetic compass, is an essential navigational instrument that provides heading information and is reliable as it does not require any external power source.