Selecting the Proper Altitude

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!

Scattered Clouds

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

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.

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  • Wind the Clock

    There is truth in the old adage that 99% of flying is routine while the remaining 1% holds the potential for events that cause those who fly to hold themselves above mere ground-bound mortals. My 37 years of military flying might have distorted that ratio a fair bit given the complexity of high-energy fighter aircraft and the uncertainties of combat, but rest assured we all earn our right to be proud of our wings every time we fly.

    The requirement that a single-seat fighter pilot be able to handle rapidly evolving emergency situations and complex systems diagnosis sets a high bar for any who join that group. However, the lessons we learned and techniques we developed for making fighter aviation significantly safer than in yesteryear have direct applicability to general aviation.

    Prioritization and compartmentalization are two important skills that every pilot should have. These skills amount to the ability to look at a complex problem, quickly determine the most critical elements, and mentally set aside those things that can wait so as to deal with highest priorities first. While this does not sound like rocket science, the art is in the doing!

    The technique for dealing with the immediate onslaught of information, such as when that caution tone or caution light presents and different gauges or displays go haywire, provided the title for this piece.

    All flight training will, at some point, involve what is called situational emergency procedures training, know to military aviators as SEPT. We do this type of training in a simulated cockpit that has all the dials and switches for our particular aircraft. None of the switches and dials do anything, some are just decals on a wooden dashboard, but the presentation allows the SEPT victim to reach for the appropriate switch or lever, while telling the instructor what and why they are doing so.

    One of the most common mistakes new trainees make is that of trying to act too fast, before they have fully and correctly analyzed the situation at hand. Herein lies the titled technique. After blurting out a quick and incorrect answer, the instructor would admonish with: “rather than try to react instantly, maintain aircraft control, analyze the situation, then take appropriate action. The best thing you can do is to reach up and wind the clock. This will give your nervous energy some place to channel itself, while your brain takes in the full situation.”

    Waltham clock

    Winding the clock might seem like an archaic notion, but, amazingly enough, even our most modern aircraft have the same clock we flew with as far back as the 1960s. The Waltham A-13A aircraft clock and timer is a wind-up device that only uses power to light up at night. Unless your emergency involved some type of catastrophic impact to the instrument panel, you could count on at least your clock to be functioning normally. Thus, reaching out and winding it was unlikely to cause any worsening of your evolving emergency and would distract your brain from the need to take some poorly-thought-out action, too quickly.

    Now, in most aircraft there are a few emergencies that will require immediate, reactive actions. In fighters, we call these Boldface Emergencies. For each type of fighter, we memorize, to the letter, the few key actions that have to be instinctive, to prevent disaster. For all other emergencies, there is time to reach out and wind the clock while assessing all instruments and lights to fully understand your situation.

    For your aircraft, know those Boldface or Critical Action Procedures, but for all other emergencies, take the time to maintain aircraft control, “wind the clock” while you analyze the situation, then take appropriate action.

    Mike Hostage is a retired USAF pilot with 37 years of experience, flying a wide variety of aircraft.  An instructor pilot for more than half of his 4800 flight hours, Mike is currently qualified in a Cirrus SR-22T and regularly flys his two homebuilt sailplanes.

  • Checking The Stall Warning Horn

    When a pilot first glances at the title of this article, the first thought that probably goes through that pilot’s head is, well that’s easy.

    And it is, if you are flying a high wing Cessna. On other airplanes, there are a few tricks to checking the stall warning horn. If you get them wrong, you’re liable to get a bill from your maintenance shop for an hour of labor for a problem they couldn’t duplicate.

    Cirrus SR22

    Let’s start with the Cirrus. On the pre-FIKI Cirrus aircraft, there was a small little hole in the wing that contained a diaphragm. That diaphragm sensed a change in airflow at a certain angle of attack just below the critical angle of attack and set off the stall warning horn. Unfortunately, the only way to check that is to suck on the hole during pre-flight.

    I don’t. I verify the hole is clear and that’s about it.

    On the FIKI Cirrus aircraft, there is actually a stall warning vane. It looks like a high wing Cessna vane, but if you turn the batteries on and try and get it to come on during your light and pitot heat check, nada.

    Here’s the trick, and the checklist doesn’t do a good job of describing this.

    • Turn on the Avionics Master
    • Turn on the speaker
    • Put the flaps to full
    • Then move the stall warning vane and you’ll hear the horn

    The speaker and the Avionics Master are so you can actually hear the horn (if you had the headset on while you were doing this, the speaker would be unnecessary). The flaps have to be full because the pitch attitude for the critical angle of attack is lower with the flaps down, so the horn goes off when at a different angle. You then don’t have to use as much force to push the vane.

    Piper PA46

    The early -310P Malibus are pretty simple and straight forward. Move the vane, get the horn.

    In the -350P, you can’t get the horn to come on by moving the vane. So, Piper put a stall test button that’s hidden underneath the upper left side of the instrument panel. Push that to test the horn. On the G1000 PA46, it is located directly above the PFD. On the Avidyne, it’s below and to the left of the pilot’s yoke.


    Testing the stall warning horn is a very important part of pre-flight. A pilot needs to know if the aircraft is close to a stall. The advent of Angle of Attack indicators in small, GA aircraft, have added a greater awareness to the angle of attack during all phases of flight to avoid those stall spins.

    If the stall warning horn goes off or the AOA shows yellow, lower that nose immediately.

  • PIREP: Austin Executive Opens a Control Tower

    Austin Executive Airport opened a control tower on Friday, February 23rd 2018.  The airport is now officially Class D airspace.  The charts and A/FD are not updated yet to reflect the tower, but there is a NOTAM with the tower and ground frequency information.  The tower hours are from 6am to 10pm.  The weather frequency remains the same.

    Make sure you check those NOTAMs if you are headed to KEDC anytime soon!

    KEDC Tower Frequency:  120.3

    KEDC Ground:  119.45

  • Flying the Piper Malibu

    Looking for an airplane with more seats, more useful load, and good speed?  Look no further than the PA-46-310P Piper Malibu.  It feels like a corporate airplane, but this turbo charged piston single is good owner/pilot airplane for taking the family on vacation or using on business trips.

    Piper Malibu Texas Top Aviation

    The original Piper Malibu, which was manufactured between 1984-1988, is a great next step airplane for Cirrus owners, Saratoga or Lance owners, and Mooney owners looking to move up to a pressurized, 6 seat piston.  The pressurization has got to be one of the best parts of the Piper Malibu.  The ability to climb up to the low flight levels (the service ceiling is FL250, but the airplane performs great between 16,000 and FL190) to catch better winds and get a better true airspeed (the airplane gains about 2.5 KTAS for every thousand feet) without having to wear oxygen makes the ride much more enjoyable.

    Equipped with six seats and a 4,100 pound gross weight, the Piper Malibu allows for a lot more carrying ability than a Cirrus or even a Saratoga.  Now, like most piston airplanes, you can’t take 6 average adults, bags, and full fuel, but here’s the great part:  the Continental TSIO 320 only burns 16.5 GPH in cruise at 75% power.  The plane will still fly 200 KTAS at 16.5 GPH.  With 120 gallon capacity, even taking half tanks still allows for a 2.5 hour range with an hour reserve.  At 200 KTAS, that’s 450 miles.  And, you gain an extra 360 pounds useful load at half tanks.  That’s not too shabby.

    Piper Malibu PA-46 Texas Top Aviation

    The Piper Malibu was designed to be comfortable, fast, and be able to carry some baggage.  There are two baggage compartments, one in the nose behind the firewall and one in the rear behind the rear seats.  The nose baggage is wide enough to fit golf clubs in, while the back baggage is large enough to fit rolling suitcases in (the front baggage has no problem with roller bags either).  Lots of weight in bags?  Again, no big deal.  Just plan on taking less fuel and still flying for 2.5 hours.

    From a pilot’s standpoint, the Piper Malibu is a pretty straightforward airplane to fly, though it does require some specialty training.  A lot of PA-46s on the market right now have upgraded glass panels and digital engine monitors, making piloting the airplane that much more streamlined.  Most Piper Malibus are equipped with the KFC 150 autopilot.  Some have a yaw damper installed, others don’t.  Some have the vertical speed and altitude capture installed, others don’t.  It just depends on that specific airplane.  They aren’t like a Cirrus where they are all made the same.

    Looking to upgrade to something with more seats, a higher service ceiling, but not a significant increase in fuel costs?  Look into the Piper Malibu.  You can get one in good shape from about $300,000.

     

  • Hurricane Harvey

    Texas Top Aviation wants to express our heartfelt concerns and prayers for those affected by Hurricane Harvey along the Texas Gulf Coast and in Houston.  We have several customers in Houston and hope and pray that they are all safe.

    The Houston Hobby Airport after Hurricane Harvey’s Torrential downpour

    If you would like to donate to the relief effort, there are several organizations that are accepting support.  A few are below.

    Samaritan’s Purse

    American Red Cross

  • How to Get the Current Weather

    For a long time, I was happy if an FBO had a radio where I could tune the ATIS or automated weather before getting into the plane. This would allow me to skip listening to the weather in the airplane with the engine running, giving me a quicker exit from the ramp while burning a little less fuel. I would also be able to brief my taxi route from the ramp since I would know which runway was in use before getting in the plane.

    As we progress forward in technology, I’m constantly amazed at how much more planning I can do from the palm of my hand. Now, I can call a phone number and get the ATIS, AWOS, or ASOS, depending on the size of the airport; if you prefer reading a text version…well, there’s an app for that.

    With this technology, it’s very important for pilots to be aware of what service they are utilizing when calling these numbers. Usually only a Class B or larger Class C airport will have a phone number specifically for ATIS as well as one for AWOS/ASOS. These are listed in the Airport/Facility Directory (AFD), as well as all flight planning apps (Foreflight, Garmin Pilot, Stratus Insight). More then one pilot has called the AWOS/ASOS number for an airport thinking they would receive the ATIS (because towered airports that have ATIS phone numbers often also have AWOS/ASOS phone numbers that are different). Since the pilot didn’t hear a code on the phone, that led to the false thinking that either the tower was closed or the pilot did not have the code (ie. Information Bravo) to give to ground control when calling for taxi instructions.  The minute weather can be very useful for flight planning, but the ATIS must be received before contacting ATC at a towered airport.

    Notice the red box just past halfway down the page. There is a phone number for the ASOS at KSAT and a separate phone number for the ATIS next to the frequency.

    Sometimes, you may get a busy tone if someone else is on the line. Usually, waiting a few minutes and trying again will lead to success. Just like old school phone lines, only one call can go through at at time! If it’s a particularly stormy day, you may be fighting a number of pilots to get on the line. In this case, an app where you can read the ATIS may be particularly helpful (Yes, there actually is a dedicated ATIS App!).

    The ATIS app allows us lowly pilots without an Aircraft Communicating and Reporting System (ACARS) to access the Digital ATIS (D-ATIS ) at airports where ATIS is available. Only 76 airports in the US have D-ATIS, most of which are either Class B or busier Class C airports. Foreflight also provides D-ATIS textually at the same 76 airports, though it is only accessible depending on which subscription level you have with Foreflight (since I’m not a Garmin Pilot or Stratus Insight user, I’m not sure if either of them give D-ATIS reports).

    ATIS App Symbol

    With Foreflight’s D-ATIS, it does not get updated over ADS-B, only when your iPad or phone have an internet signal. When inbound to an airport with D-ATIS, the pilot has to listen to the radio frequency to get the current ATIS. Foreflight will display the last D-ATIS it received, but typically, it’s old. Check the time in the upper right hand corner.

    Foreflight now offers Pre-Departure Clearance (PDC) at those same 76 airports. With either a pre-registered tail number or a Foreflight call sign (starting in FFL), once a pilot files an IFR flight plan, the D-ATIS and the IFR clearance in it’s entirety are texted to the phone number the pilot filed with. All that is left to do is call ground, state “I have information Romeo and my clearance, ready to taxi,” then away you go. Skipping listening to the ATIS and talking to Clearance Delivery saves a good 5-10 minutes at times, depending on how busy the airport is.

    These days, there are many different avenues to get the current weather (and IFR clearances!). When calling on the phone, the key is to be aware, know which number you are calling and, if you are expecting to hear an ATIS message but instead hear the AWOS/ASOS, verify the Chart Supplement Guide and Notices to Airmen (NOTAMS) to check tower hours of operation before flying into the airspace. 

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