Register

Got GPS?

Gemini Sparkle

Key Takeaways:

  • Modern IFR charts increasingly mandate specific GPS capabilities (e.g., "RNAV 1 - GPS required") even for traditional approaches like ILS, reflecting the diminishing role of ground-based navaids.
  • Pilots must thoroughly understand their aircraft's GPS certifications (e.g., TSO C146c) and eligibility for various RNAV classes (e.g., RNAV 1) by consulting the POH or avionics documents.
  • Comprehensive pre-flight briefing is crucial to confirm equipment compliance, understand complex approach notes (like DME alternatives or missed approach navigation), and ensure safety, especially in challenging low-IFR conditions.
See a mistake? Contact us.

Our IFR avionics are getting evermore capable, allowing us single-pilot fliers to shoot RNAV approaches once reserved for the big iron. While most standard satellite-based approaches have become basic fare, there are now some new notes we’re finding on the charts that require figuring out what the onboard GPS really is allowed to do. This can be an easy check in flight—does the database have it? But sometimes, the answer’s buried elsewhere in the airplane, i.e. on paper. And by the way, we’re not even on an RNAV approach today; we’re going for the good old-fashioned ILS, which is always the former but not always the latter.

Take Your Pick

Here’s an example of this kind of approach, which we can expect to see in growing numbers. You’re preparing to fly to an important meeting in Plattsburgh, New York, landing at KPBG. While waiting for the low ceilings to come up a bit, you plan for a close-tominimums day.

Ready to Sell Your Aircraft?

List your airplane on AircraftForSale.com and reach qualified buyers.

List Your Aircraft
AircraftForSale Logo | FLYING Logo
Pilot in aircraft
Sign-up for newsletters & special offers!

Get the latest stories & special offers delivered directly to your inbox.

SUBSCRIBE