Is The Approach Active? Flying Garmin Instrument Approaches Seminar

Selecting the Proper Altitude

ByHank Gibson August 28, 2015September 6, 2015

One of the first questions a student pilot asks me when starting the cross country portion of his or her training is, how do I know what altitude is best for my flight?  This is a good question, because without taking certain aspects of the flight into account, it’s really just a crap shoot when selecting an altitude.  Craps and flying don’t mix, so let’s take a look at a few considerations when selecting an altitude.

Sky Coverage

Sky coverage has several subcategories when it comes to selecting an altitude.  First is how high are the bases?  Is it IFR (VFR pilots would be grounded), marginal VFR (1,000 AGL to 3,000 AGL ceiling), or good VFR (above 3,000 AGL ceiling)?  If the cloud deck is only 2,500 feet off the ground, then VFR pilots are limited to either 1,000 AGL to 2,000 AGL.  This is an excellent segue into why VFR pilots shouldn’t scud run!

Second, what kind of cloud deck is it?  Is it an actual ceiling (broken or overcast), or is it a scattered layer?  Few or scattered layers usually allow VFR pilots to find a hole to get higher to some smoother air, making the flight more pleasant.  VFR pilots, always make sure to check the destination weather as it could be scattered where you are departing from, but it might be broken or overcast where you are arriving.

Last, how high are the tops of the clouds?  Pilots can only get this information in the planning stage from the area forecast or from pilot reports, so most of the time, it’s not very precise information.  If the tops are at 10,000 feet and the pilot is flying a 172 on a 30 mile trip, it doesn’t make much sense to get on top of the clouds.

Terrain and Obstacles

Terrain goes hand in hand with sky coverage.  If there are low clouds and high terrain, that doesn’t bode well for trying to stay VFR and not hitting anything.  Obstacles need to be taken into account too, as there are some pretty tall radio towers that can stretch up into a 1,500-2,000 AGL deck of clouds.

Winds Aloft

Once the sky coverage and terrain have been considered, it’s time to look at the winds aloft.  Tailwinds are preferred, but, sometimes, a headwind is the only option.  After taking the clouds and terrain into account, this narrows down your altitude to a handful of options.  The winds aloft will further narrow it down.

Aircraft Performance

Once you have two or three altitudes in mind, taking a look at the performance charts for your airplane will help nail down that final altitude.  Pull out the POH, compare fuel burn and cruise speed, and you’ll have your altitude selected.

King Schools Updates Check Ride Guidance

ByHank Gibson August 1, 2016August 17, 2016

Most in the aviation industry are familiar with John and Martha King, the faces of the myriad of Kings Schools aviation training courses.  Thousands of pilots have gone through their ground school courses for a variety of certificates or ratings, taking in the videos on original VHS, DVD, or streaming online depending on what the current technology is.

With the advent of the Airmen Certification Standards (ACS) replacing the Practical Test Standards (PTS) for the private and instrument certificates, King Schools didn’t take long to update their material.

To help private students prepping for their check ride (and their instructors who aren’t familiar with an ACS check ride yet), John King plays the student pilot in the latest King Schools prep video.  The streaming online video is about 5 hours long, includes the oral portion and the flight portion of the check ride, and runs $139 (you can still get the DVD, too!).

I have recommended King Schools and their courses to all of my customers.  They have always put out a great product as they reduce the fear felt for a check ride applicant.  If you are prepping for your private pilot check ride, checkout the King Schools video today.

Garmin VNV

ByHank Gibson April 19, 2017

The Garmin G1000/Perspective combined with the Garmin GFC 700 Autopilot can be a great tool in descent planning.  When you want to end up at pattern altitude a certain distance from the airport or you get a clearance to cross a fix at a certain altitude, Garmin VNV is a great tool.  Here’s how to use it.

VFR Garmin VNV Use

Let’s say you want to end up at pattern altitude 3nm from your destination, but you don’t want to descend down into the bumps before you have to.  Here’s how to set it up:

• Go to the Flight Plan page on the MFD
• Press the ATK OFST soft key on the bottom of the MFD.  It stands for Along Track Offset, which, in laymen’s terms, means you are setting a point along your track a certain distance from your destination.  In this case, it will be 3nm
• Input the distance using either the keypad or the small FMS knob and press enter
• Select the altitude you want to be at (in this case pattern altitude) and press enter
• You will see a point 3nm before you destination appear on your magenta line and a Top Of Descent (TOD) appear where you need to start your descent
• 1 minute before the Top Of Descent, an indicator will appear next to your altimeter
• To have the GFC 700 Autopilot fly the descent for you, you have to do two things
  • Set the Altitude bug for the desired altitude
  • Press VNV on the autopilot
• All you have to do now is manage power

IFR Garmin VNV Use

Let’s say you are told to cross a fix at a specific altitude.  Here’s how to use Garmin VNV to plan it out.

• Go to the Flight Plan page on the MFD
• Turn the cursor on and highlight the altitude blank next to the fix in the flight plan
• Input the desired altitude
• You will see a Top Of Descent (TOD) point appear along your course where you need to start your descent
• 1 minute before the Top Of Descent, an indicator will appear next to your altimeter
• To have the GFC 700 Autopilot fly the descent for you, you have to do two things
  • Set the Altitude bug for the desired altitude
  • Press VNV on the autopilot
• All you have to do now is manage power