Readback

Turn Off a Satellite? Some FMCs have a satellite deselection function. Some don’t. Why and when should this be used? Pablo Farias Dezontini - São Paulo, Brazil Normally...

Mins Deep Dive Deep Thought I read your “Deep Dive into Mins” article in the July issue in which you cite AIM 5-4-7.c. I believe...

Oops! That Sinking Feeling... I feel the need to share my recent screwup with other pilots because I firmly believe that we can all benefit...

Finds Skew-T Useful I must categorize Mr. Mazza’s comments in “Readback” in the May issue as uninformed. Far from being the domain of only professional...

Dangerous Identifiers I enjoyed Elaine Kauh’s article, “Making Do, Part 2” back in the August 2019 issue. It accurately reflects the decisions— and sometimes the...

Remembers Eagle Fondly I must compliment Brian Willett on his excellent Tricks of the Trade article in the March 2020, “Ski Country Flying.” The article...

Deskewed Me ... Or Not In the first of your articles simplifyingSkew-T diagrams (March 2020), you mention that a reader suggested you simplify them or...

Who Cancels Flight Following? When receiving VFR flight following who has the authority to cancel? I haven’t found any clear guidance for situations where ATC,...

Sim Challenge Workout I love the magazine! Amazing work all around. I just completed Jeff Van West’s November Sim Challenge (around Monterey, CA) on my own...

I noted an interesting change to the Instrument Rating ACS released back in June last year. It used to be that per the ACS, a circling approach required a heading change of at least 90 degrees from the final approach course to the landing runway. That requirement is now gone, replaced with the requirement to Visually maneuver to a base or downwind leg appropriate for the landing runway and environmental conditions. Also, new language was added saying the pilot must not bank over 30 degrees.

Your shop gave you bad advice. Garmin says that the frequencies are sufficiently different, even counting various harmonics, that interference wouldnt be an inherent problem. They do, though, recommend a minimum of two feet between a GPS antenna and any strong transmitter. There are few, if any, airframes where it would be impossible to get at least that. If your tech, however, has seen that problem, its likely due to other factors, like poor antenna grounding, poor connections, bad wiring, etc., but not antenna proximity unless they were right next to each other.

In the August 2019 Readback, your reply to the writer who was referring to the More ILS vs. LPV article (February 2019) errs when you say that GPS is a single receiver system for various satellites and WAAS ground station(s). WAAS data is transmitted to users from geostationary communications satellites. Currently three geo comsats are broadcasting WAAS signals covering North America.Jim TorleyColorado Springs, CO