Which AIP section details altimeter setting procedures?

Which AIP section details altimeter setting procedures?

• A. ENR 1.7
• B. ENR 2.4
• C. GEN 3.5
• D. ENR 4.3

Answer: (A)

The key idea is how the aircraft’s altimeter is set to reflect the correct air pressure so the readout matches the aircraft’s true height. In the AIP, the procedures for setting and using altimeter pressure are organized under the enroute information section, which covers procedures and requirements encountered during flight in the enroute phase. Within that enroute section, the specific subsection that deals with altimeter setting procedures is the one dedicated to altimeter settings, including how to obtain the local pressure (QNH) or switch to the standard pressure at or above the transition altitude. That’s why this item points to the enroute topic, and more precisely the subsection that addresses altimeter setting procedures. In practice, you’d follow the guidance there for obtaining the correct pressure, applying it to the altimeter, and knowing when to use standard pressure. The other sections cover different topics (general information, aerodrome procedures, etc.), so they aren’t the place where altimeter setting procedures are described.

The key idea is how the aircraft’s altimeter is set to reflect the correct air pressure so the readout matches the aircraft’s true height. In the AIP, the procedures for setting and using altimeter pressure are organized under the enroute information section, which covers procedures and requirements encountered during flight in the enroute phase. Within that enroute section, the specific subsection that deals with altimeter setting procedures is the one dedicated to altimeter settings, including how to obtain the local pressure (QNH) or switch to the standard pressure at or above the transition altitude. That’s why this item points to the enroute topic, and more precisely the subsection that addresses altimeter setting procedures. In practice, you’d follow the guidance there for obtaining the correct pressure, applying it to the altimeter, and knowing when to use standard pressure. The other sections cover different topics (general information, aerodrome procedures, etc.), so they aren’t the place where altimeter setting procedures are described.