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Regulation Fine Points

Ill admit it: I enjoy searching out some little-known gems in the regulations. Some, of course, are items we should know-but often dont. Others are almost so esoteric that it simply might not matter to most of us.

Gemini Sparkle

Key Takeaways:

  • Transponder and ADS-B Out requirements are determined by the specific airspace and altitude, not by operating under Instrument Flight Rules (IFR).
  • While 121.5 MHz ELTs are legally permissible if pre-installed, 406 MHz units are functionally critical for modern search and rescue and are mandatory for new installations or replacements.
  • Aircraft can momentarily descend below Decision Altitude (DA) when initiating a missed approach from a precision approach, but must not descend below Minimum Descent Altitude (MDA) on a non-precision approach.
  • Regulations surrounding complex aircraft training for commercial certificates and the various scenarios for legally logging Pilot-in-Command (PIC) time contain specific nuances and exceptions.
See a mistake? Contact us.

I’ll admit it: I enjoy searching out some little-known gems in the regulations. Some, of course, are items we should know—but often don’t. Others are almost so esoteric that it simply might not matter to most of us.

Let’s poke around and see if we can teach you something. Better yet, perhaps we’ll uncover a misunderstanding you had. In the extreme case, we might even save you from a bust someday.

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