Aircraft Purchase: The Logbook & Pre-Purchase Inspections

Your about to make your dream aircraft purchase.  The plane has low time on the engine, is reasonably priced, and, according to the seller, has no damage history.  You are overjoyed!  Your dream of making an aircraft purchase is finally coming true.  You prepare your offer for the seller, set up the escrow account, and start all the paperwork.

Two weeks later, the airplane is yours!  You start flying it, though, and the engine starts to have some strange vibrations.  After several flights, it starts to get worse.  You take it to your mechanic to get it looked at and you find out the airplane needs three new cylinders along with some other engine work that is going to total a lot of money.  Plus, your airplane is now going to be in the shop for several weeks.

All that excitement you just had?  It just went out the window.

Could this have been prevented?  Probably so, with a logbook inspection and a pre-purchase inspection.

Aircraft Purchase:  Maintenance Logbooks

Aircraft Purchase: Logbook Inspection

Inspecting a logbook can be very daunting when making an aircraft purchase, especially for older airplanes.  This is, however, one of the most vital steps in making a new aircraft purchase.  You can find out many things from looking at the maintenance logs of an airplane.  First, you can check the compression levels of the engine.  Typically, you want compression levels in the 70’s, with it still being okay in the high 60’s.  Anything below 65 and there could be potential problems.

Second, you can find out if there has been any odd maintenance done pointing to possible unreported damage history.  This is rare, as most aircraft owners are honest and up front when talking about damage history.  But, if there is an entry detailing a prop overhaul after only 50 hours on that prop, you may start to ask some questions.

Third, you can find out how well the airplane has been maintained.  If a lot of maintenance was completed at each annual, even if it was a lot of small things, then the airplane has been maintained by a good mechanic who is very thorough.  This also involves a check of the ADs, Mandatory SBs, SBs, and SLs that have been issued for the airplane.  If all that has been kept up with, it’s a well maintained airplane.

Finally, it gives you a good idea of how much the airplane has been flown.  Sure, the ad online will have the total time and time since overhaul, but you can look at the year by year breakdown of how much the airplane has been flown.  It may have been flown a lot earlier in it’s life, but not quite as much recently.  That’s not necessarily a bad thing, but airplanes like to be flown.

Aircraft Purchase: Pre-Purchase Inspection

Before making an aircraft purchase, it is extremely vital that whenever you are buying an airplane that you get a pre-purchase inspection done on the airplane.  Even better is getting one done by a mechanic who specializes in that type of airplane (eg. Piper Service Center for Pipers, Cirrus Service Centers for Cirrus, Kevin Mead for PA-46s).  A pre-purchase inspection can save you a lot of money in the end.

There is always going to be some kind of maintenance issue with an airplane being purchased, whether it is big or small.  Once a pre-purchase inspection is completed, you can take the findings to the seller and negotiate for a lower price based on those findings, or just have the seller fix the items before the sale is completed.

I would recommend having the seller fix the problems before the sale is completed.  Even though it may take a little longer for the sale to be completed this way, you’ll get to enjoy your airplane right away instead of it being in the shop the next several weeks after you complete the purchase.

There is the circumstance where the  pre-purchase inspection reveals some serious airworthiness issues which would cause the deal to be voided.  Always put this clause in a purchase agreement, giving you, the buyer, an out if there are serious airworthiness issues.

When it comes to making an aircraft purchase, it is not a process to be rushed.  Slow and steady usually gets the best airplane for the money, giving you years of enjoyment in the future.

Looking to make an aircraft purchase?  Daunted by all the work that’s involved to find a good, quality airplane?  Let Texas Top Aviation do your aircraft search for you!  To learn more, visit Texas Top Aviation’s Aircraft Purchase Consultations page.

Similar Posts

  • Maintaining TKS Panels

    Columbia TKS Panels

    When cleaning airplanes, the majority of people don’t know how to properly maintain their TKS panels.  TKS panels provide wing leading edge, horizontal stabilizer leading edge, and, in the case of FIKI airplanes, vertical stabilizer leading edge de-icing protection.  For those not familiar with them, they are metal strips that have thousands of holes drilled into them where the TKS fluid seeps out. They have become quite prevalent on Cirrus aircraft, the Cessna TTx, and Mooney aircraft manufactured in the last decade or so.  The system is also known as a weeping wing system.

    Being on the leading edges, these panels pick up bugs very easily.  For the uninitiated, it would make sense to just use normal airplane cleaner to spray the panels and scrub the bugs.  Don’t!

    Using anything that contains Methyl Ethyl Ketone (MEK) as that can harm the TKS bladders behind the panels.  Any aircraft cleaner containing wax could cause the pores to clog, preventing the TKS fluid from properly seeping onto the wing.

    What’s the best thing to do?  Soap and water with a soft cloth is a good start (again, make sure it doesn’t have wax in it.  Dish soap would be suitable).  No hose available?  Just simply turn the TKS system on, let it run till you start to see fluid drip off the wings onto the ground, and use the fluid to clean the panels.

    A soft cloth would work fine, but, if the panels are really buggy, take a green scouring pad to do some scrubbing.  Just make sure the scrubbing motion is up and down with the grain, not side to side.  You can find the green scouring sponges on the dishwashing aisle in the grocery store.  Just leave one in the hangar for when you need it.

  • Reading Weather Prog Charts

    There are a multitude of weather products out there today to assist pilots in preparing for a flight.  Aviationweather.gov is the best source for getting all the information a pilot needs for planning a flight.  Aviationweather.gov is the National Weather Service’s source for all aviation related weather products.  When I teach about weather and weather briefings, I recommend to my students to utilize Aviationweather.gov in the planning stages, but still call the Flight Service Station to get a full fledged weather briefing before takeoff.

    When preflight weather planning, one of the best ways to get a picture of what is happening over a broad area is utilizing the Low Level Significant Weather Prog charts.  The Prog chart gives a forecasted 12 and 24 hour picture of what type of weather to expect over the US.  The Prog chart gives the expected flight rules, areas of turbulence, and where the freezing level is located.  If you’re looking at the 4 panel view, the Surface Prog chart shows fronts, pressure areas, and areas of expected precipitation.  That covers just about everything, doesn’t it?

    I believe the Prog charts are underutilized in planning.  Foreflight and Garmin Pilot have given easy access to radar pictures, satellite pictures, METARs, TAFs, and several other sources of weather information.  But, a lot of the easy access data you can get from those apps is current data (with the exception of the TAF) while a lot of the forecast data takes some hunting around.  So, products like Prog charts aren’t often utilized.

    The other problem arises when pilots know about Prog charts, but don’t know how to read them, then don’t know how to find the legend to decipher the chart, the chart is often set aside and quickly forgotten about just because of a lack of knowledge.  Have no fear, though, as now we will use an example 4 panel Prog chart to decipher the lines and colorations.

    Low Level Sig WX Prog

    Just looking at the Low Level Significant Weather Prog Chart above, it can be a little confusing.  That’s why they make a legend!

    Low Level Legend

    Coupling the legend with the chart above, we can determine some things.  First, California, parts of the Pacific Northwest, a small part of southern Arizona, and a good portion of the Midwest and East coast are going to have marginal VFR conditions in the next 12 hours.  Wisconsin, Illinois, a good portion of the Northeast, and a small portion of the Pacific Northwest will suffer IFR from IFR conditions.  There are going to be a good amount of low level turbulence in the northern and eastern parts of the country.  Finally, the freezing level starts at the surface running in a jagged line across the midwest states and curling up into the Northeast.

    That’s a good bit of information, isn’t it?  If a pilot is planning a VFR flight into the Northeast tonight, it would probably be best to wait for another day, according to this chart.

    Now, to see what is causing the conditions above, we need to look at the Surface Prog Chart.

    Surface Prog

    The green circular areas above show that some form of precipitation is in that area.  The circular dots with the triangle located in Mexico and Baja California are depicting moderate rain showers.  If the triangle was gone, it would just be moderate rain.  In the northeast, all those symbols are showing moderate to heavy snow showers.  Across the plains, we see a lot of high pressure, meaning visibility and nice flying weather.

    These charts are invaluable when it comes to flight planning, especially over long distances when the weather could be changing a lot over the period of your flight.  Put them to use the next time you are planning a trip and you’ll learn you have a much better picture of what the weather is doing.

  • TBM Debuts the 960 at Sun N Fun

    This is a Press Release from Daher’s website, the maker of the TBM 960.

    Sun ‘n Fun Aerospace Expo, Lakeland, Florida, April 5, 2022 – Daher today unveiled the latest high-end version of its TBM pressurized single turboprop aircraft family – the TBM 960 – which incorporates Pratt & Whitney Canada’s advanced PT6E-66XT engine and a fully digital e-throttle, along with a digitally-controlled cabin that incorporates an all-new environmental control system, LED ambience lighting and electrically-dimmable windows.

    The TBM 960 was introduced at the Sun ‘n Fun Aerospace Expo in Lakeland, Florida, where Daher is exhibiting the first production airplane (exhibit stand #MD-22B).

    “The TBM 960 is the quintessential TBM, representing the fifth evolution of our very fast turboprop aircraft family since the TBM 900-series’ introduction in 2014,” commented Nicolas Chabbert, the Senior Vice President of Daher’s Aircraft Division. “It takes the maximum advantage of today’s turboprop technology to provide digital control of the engine and the propeller.”

    The TBM 960 retains the rapid speed of Daher’s TBM family while enabling lower fuel consumption. At Daher’s recommended cruise setting of 308 kts., the fuel consumption is only 57 U.S. gallons per hour, which is a 10% fuel economy compared to maximum cruise setting for more sustainability.

    At the heart of this latest TBM version is the intelligent PT6E-66XT powerplant and Hartzell Propeller’s five-blade RaptorTM composite propeller, both of which are linked to the dual-channel digital Engine and Propeller Electronic Control System (EPECS).

    With the EPECS, the PT6E-66XT’s startup is fully automated after a single-switch activation. The cockpit’s power lever is an e-throttle, using a single forward position from takeoff to landing – with the EPECS optimizing powerplant performance throughout the flight envelope while

    Daher unveils the TBM 960 at Sun ‘n Fun Aerospace Expo

    reducing pilot workload by integrating all functions and protecting the engine’s life. Analysis of engine parameters is driven by 100-plus smart data inputs.

    The RaptorTM propeller is fully integrated into the propulsion system. It is specifically designed to reduce overall weight and improve the TBM 960’s takeoff distance, climb and cruise speed. Turning at 1,925 rpm during maximum power output, the Raptor contributes to limiting noise and vibration. Its sound level during takeoff is just 76.4 decibels, meeting the most stringent international noise standards.

    With its G3000® integrated flight deck, the TBM 960 retains Daher’s e-copilot® concentration of technological innovation and safety systems in the TBM, which can be compared to an “electronic copilot.” This includes an icing protection system, flight envelope monitoring through the Electronic Stability and Protection (ESP) and the Under-speed Protection (USP) systems, the Emergency Descent Mode (EDM) function, as well as the game-changing HomeSafeTM emergency autoland system.

    New to the TBM 960 is the Garmin GWXTM 8000 doppler weather radar with advanced surveillance features such as lightning and hail prediction, turbulence detection, zero blind range for close-in returns, and ground clutter suppression. The TBM 960 also is the first application of Garmin’s GDL® 60 next-generation data transmitter for automatic database upload and interconnection with mobile devices.

    The TBM 960’s Prestige cabin extends Daher’s use of digital power inside the aircraft, featuring an all-new environmental control system, LED ambience strip lighting integrated into both sides of the overhead ceiling panel, and electronically-dimmable windows – all controlled by a PassengerComfortDisplay(PCD). Enhancementsinthecabin’sstyleandcomfortalsoinclude new ergonomically enhanced seats, USB-A and USB-C power plugs, individual cupholders and headset hangers for each occupant.

    For the TBM 960, a fifth TBM paint scheme – called Sirocco, based on the creativity of French designer Alexandre Echasseriau – has been added to the aircraft’s style customization possibilities.

    The TBM 960 has been certified by EASA (the European Union Aviation Safety Agency); with certification by the U.S. FAA (Federal Aviation Administration) currently underway. Deliveries will begin in the first half of 2022.

    With the new aircraft’s launch, Daher’s TBM family is now offered in two versions: the TBM 960 and TBM 910.

    About Daher – www.daher.com

  • Garmin VNV

    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
  • Merry Christmas 2018

    So the Word became human and made his home among us. He was full of unfailing love and faithfulness. And we have seen his glory, the glory of the Father’s one and only Son (John 1:14).

    From the Texas Top Aviation family (Hank, Kelsey, Everett, Cooper, and Cord) to your family, we wish you a Merry Christmas!  We are thankful for how the Lord has blessed us this year.  We pray for blessings on your family this coming year.

    Keep the wheel side down and the sunny side up!

    Merry Christmas!

  • Piper PA46 De-Ice Boots Care

    It’s winter time, which means it’s time to use those Piper PA46 de-ice boots a little more often. Most of us know the winter flying rules, don’t stay in ice, get rid of frost, etc. However, most of us aren’t as familiar with how to maintain those Piper PA46 de-ice boots. The do need some TLC every couple of months to keep them in tip top shape.

    Below is the recommendation from Goodrich (the maker of the boots) on what to use to clean and polish the boots and how often to do it.

    Steps 1-3 below are your twice a year items to make your Piper PA46 de-ice boots last through the lifetime of the aircraft.

    Step 1-ShineMaster Prep

    ShineMaster Prep strips all the dirt, grime, grease, oil, silicone products and old ShineMaster on the Piper PA46 de-ice boots to prep them for Step 2.

    ShineMaster Prep can be found on Goodrich’s website.

    Step 2-AgeMaster #1

    AgeMaster is your second step the in the Piper PA46 de-ice boot preservation and protectant process. AgeMaster is a rubber preservative that protects against weathering, ozone, and ultraviolet rays.

    Make the first application when your de-ice boots are 6 months old, then re-apply every 150 hours (or twice a year) after that.

    AgeMaster #1 can be purchased on Goodrich’s website.

    Step 3-ShineMaster

    Step 3 in the Piper PA46 de-ice boot care is ShineMaster. As the name implies, ShineMaster shine’s the boots up after getting rid of all the old gunk & grime with ShineMaster Prep and after AgeMaster is applied. 2-3 coats should be sufficient.

    ShineMaster can be purchased on Goodrich’s website.


    During icing season, Goodrich recommends ICEX II. ICEX II is an ice inhibitor that should be applied every 50 hours during ice season. This will help prevent ice from sticking to the Piper PA46 de-ice boots. ICEX II can be found here.

    Finally, for general cleaning of the boots after each flight, utilize Goodrich Aerospace Cleaner to debug, then follow up with Goodrich Aerospace Protectant. Goodrich claims their Protectant will resist dust, soiling, and staining. There may be less bugs to clean each time!


    With just a few hours a couple times a year spent working on the Piper PA46 de-ice boots, owners will never have to worry about the hefty price tag of boot replacement!

One Comment

  1. Great advice! Yes, get the prebuy done first and negotiate repairs needed after with seller.

Leave a Reply

Your email address will not be published. Required fields are marked *