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Why Altimeters Are Crucial for Safe Flying

Midair collisions and busted check rides can result from inaccurate altitude.

NTSB investigators inspect wreckage of CRJ-700
NTSB investigators inspect wreckage of CRJ-700. [Credit: NTSB]
Gemini Sparkle

Key Takeaways:

  • Maintaining precise altitude is critical for flight safety, preventing airspace violations, and avoiding mid-air collisions, as highlighted by a fatal incident where altimeter reliability was a contributing factor.
  • Altimeters, along with pitot-static and transponder systems, must be accurate (within 75 feet of field elevation) and undergo mandated inspections every 24 months for IFR operations.
  • Pilots are responsible for diligently setting and verifying altimeter readings against automated weather or field elevation, prioritizing physical observation over automated data when discrepancies occur, and continuously monitoring altitude during flight.
See a mistake? Contact us.

“Fix your altitude.”

How many times have you heard this during an instructional flight? Let’s say you were told to fly at an indicated altitude of 1,900 msl and because you got a little distracted, you’re now at 2,100. 

Meg Godlewski

Meg Godlewski has been an aviation journalist for more than 24 years and a CFI for more than 20 years. If she is not flying or teaching aviation, she is writing about it. Meg is a founding member of the Pilot Proficiency Center at EAA AirVenture and excels at the application of simulation technology to flatten the learning curve. Follow Meg on Twitter @2Lewski.

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