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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, airspace compliance, and checkride success, with even small altimeter discrepancies posing significant risks, especially in conditions with limited visual cues.
  • Unreliable altimeters, like those potentially involved in the D.C. midair helicopter-jet collision, can lead to catastrophic accidents by providing inaccurate altitude information to pilots.
  • Pilots are responsible for accurately setting altimeters based on weather reports or field elevation and trusting physical proof over automated data when discrepancies arise.
  • Aircraft altimeters and pitot-static systems used for IFR flight have strict regulatory requirements for inspection and testing every 24 months to ensure accuracy and prevent flight hazards.
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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