Register

Non-Precision Stability

Gemini Sparkle

Key Takeaways:

  • The article contrasts the traditional "dive and drive" non-precision approach (steep descent to MDA then level flight) with the modern FAA-preferred "stabilized, constant-angle descent" (reaching MDA at the Missed Approach Point) for enhanced safety and stability.
  • While a constant-angle descent is promoted for improved situational awareness and reduced pilot workload, implementing it without electronic glidepath guidance can be complex, requiring real-time calculations and adherence to intermediate altitude restrictions.
  • The author, drawing on older training, suggests a practical hybrid approach: using a controlled, higher rate of descent to achieve level flight at MDA well before the MAP, then employing a shallower rate if visual, to simplify cockpit tasks.
See a mistake? Contact us.

I presented a webinar recently about techniques for flying stabilized approaches. During the question-and-answer period, one of the viewers asked me for a technique for flying a traditional non-precision approach profile, that is, a steep descent from the final approach fix (FAF) to leveling off at the minimum descent altitude (MDA) and flying level until reaching the missed approach point (MAP). I answered the question with recommended pitch attitudes, power settings, airplane configurations and airspeeds appropriate to his airplane type for the old-school “dive and drive”-style approach.

The next morning, I opened my email to find a long missive from another webinar viewer, taking me to task for describing this “unsafe” descent profile. After all, the viewer wrote, the FAA now calls for a constant angle, constant-rate descent from the FAF to the MAP—a stabilized approach—even on an approach procedure that does not include an electronic glidepath. I answered that person’s question as well, and thought it worthwhile to delve deeper into the skills and procedures needed to fly a stabilized, non-precision approach.

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