GPS approach – Aviation News Talk

Max talks with airline pilot and Designated Pilot Examiner (DPE) Jim Pitman to clear up a persistent avionics myth: that pressing the APR (Approach) key activates a GPS approach. In reality, APR is part of the automatic flight control system (AFCS)—not the GPS navigator. Its function is to arm the flight director’s lateral and vertical capture modes so the autopilot (if engaged) can follow the approach path. You can also view a video version of this episode. Just look on the page for August 15, 2025 video. And while you’re on that page, please sign up to support the show.

Jim’s “apples vs. oranges” analogy helps pilots keep the two systems straight: Apples = GPS navigator functions like activating an approach, sequencing waypoints, and CDI scaling. Oranges = AFCS/autopilot functions like heading, NAV, APR, and altitude hold modes. Max and Jim break down common scenarios in G1000 and Garmin Perspective+ cockpits, including:

How to know an approach is active (look for magenta waypoint below the approach title).
Why APR is often pressed at the wrong time—and how that can disarm modes.
When to press NAV instead of APR (e.g., intercepting before clearance).
How to interpret scaling modes (LPV, LNAV, terminal, en route) inside the HSI.
Using OBS mode effectively and when to turn it off.

They also discuss common checkride errors, such as failing to deselect OBS or mishandling the SUSP (suspend) key during a hold. Jim explains why the FAA expects private pilot applicants to demonstrate basic knowledge of installed automation—even without an instrument rating. You’ll hear practical techniques to avoid “automation surprise,” like keeping the active flight plan visible, always checking the flight mode annunciator (“scoreboard”) before and after pressing a button, and using the “look–press–look” habit. Finally, they clarify the confusion between loading and activating an approach: often, the best way to start is simply going direct to the IAF or IF rather than pressing “Activate Approach.” Pilots can download Jim’s free “G1000 Common Errors & Solutions” guide at flywithjim.com/G1000 and Whether you fly glass-cockpit IFR regularly or are just starting instrument training, this episode will help you use the APR key correctly, fly more precise GPS approaches, and avoid costly autopilot errors. If you’re getting value from this show, please support the show via PayPal, Venmo, Zelle or Patreon. Support the Show by buying a Lightspeed ANR Headsets Max has been using only Lightspeed headsets for nearly 25 years! I love their tradeup program that let’s you trade in an older Lightspeed headset for a newer model. Start with one of the links below, and Lightspeed will pay a referral fee to support Aviation News Talk. Lightspeed Delta Zulu Headset $1299 NEW – Lightspeed Zulu 4 Headset $1099 Lightspeed Zulu 3 Headset $949 Lightspeed Sierra Headset $749 My Review on the Lightspeed Delta Zulu Send us your feedback or comments via email If you have a question you’d like answered on the show, let listeners hear you ask the question, by recording your listener question using your phone. Mentioned on the Show Buy Max Trescott’s G3000 Book Call 800-247-6553 Win a Free Headset: Lightspeed Delta Zulu Headset Giveaway NTSB News Talk Podcast NTSB News Talk on Apple Podcasts App NTSB News Talk on Spotify App UAV News Talk Podcast Rotary Wing Show Podcast Video Version of this Episode! Watch it for free on Patreon Jim Pitman’s website and APR slides Free Index to the first 282 episodes of Aviation New Talk So You Want To Learn to Fly or Buy a Cirrus seminars Online Version of the Seminar Coming Soon – Register for Notification Check out our recommended ADS-B receivers, and order one for yourself. Yes, we’ll make a couple of dollars if you do. Get the Free Aviation News Talk app for iOS or Android. Check out Max’s Online Courses: G1000 VFR, G1000 IFR, and Flying WAAS & GPS Approaches. Find them all at: https://www.pilotlearning.com/ Social Media Like Aviation News Talk podcast on Facebook Follow Max on Instagram Follow Max on Twitter Listen to all Aviation News Talk podcasts on YouTube or YouTube Premium “Go Around” song used by permission of Ken Dravis; you can buy his music at kendravis.com If you purchase a product through a link on our site, we may receive compensation.

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Summary
Max talks about a fatal crash with many risk factors including a pilot who had low total flying time and relatively little experience in an SR22. After a 5-hour flight, flown late at night, he flew past his destination to buy cheap fuel at another airport close to his home. During that time, his home field went below minimums. He appeared to be unaware he was flying parallel, but offset by 0.6 miles laterally, throughout the entire approach. He ended up crashing a mile short of the runway. The accident pilot made a similar mistake during an instrument approach he flew two nights earlier. However that time, after flying parallel and offset from the final approach course for a full minute, he noticed his error and slowly corrected, getting back on course just at the Final Approach Fix.

These similar errors suggest the pilot was not looking at the HSI for primary course guidance during his instrument approaches. Most likely, he was instead referring to the moving map for course guidance. Unfortunately the moving map presents virtually the same image whether you’re slightly off course or far outside the bounds of the instrument approach, as this pilot was. Depending upon how the map range is set, the map looks virtually the same in both cases. I occasionally see instrument pilots make this mistake and I always tell them they must use the HSI (or CDI), not the moving map, for primary course guidance.

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SR22 Accident – Kathryn’s Report
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Get the Free Aviation News Talk app for iOS or Android.

Check out Max’s Online Courses: G1000 VFR, G1000 IFR, and Flying WAAS & GPS Approaches. Find them all at: https://www.pilotlearning.com/

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