# What are the must-checks for purchasing an airplane?

I've always dreamed of buying my own plane. Turns out, they can be had for $20,000 on eBay. This sounds too good to be true. What checklist of items are essential to prevent my new purchase from falling out of the sky? ## 2 Answers There are plenty of great$20,000 aircraft out there - the hard part is finding them.

"What to look for" is an incredibly broad question, and varies substantially between different types of aircraft: You would not look for the same things on a Piper Comanche as you would on a Cessna 182.
Accordingly the first thing you want to do is find a mechanic who is an expert in the particular type of aircraft to help you check it out and do a "pre-purchase inspection".

Finding those mechanics is actually pretty easy: Look for a "type club" that supports the aircraft you're considering and ask them for recommendations (e.g. for a Cessna I'd talk to the Cessna Pilot's Association, for a Cirrus COPA, for most Piper aircraft the Piper forum, for Beechcraft Beech Talk, etc.

Talk to folks on those forums (and to your mechanic) about what you, as a buyer, should be looking at before you get the mechanic involved for the more detailed inspection. There are lots of things you as a pilot (even a student pilot) can determine just by looking at a plane (and/or the logbooks).

Some key items to look at before you go see the plane:

• NTSB Records
Like Larian mentioned go to the NTSB site (or the equivalent if you're not in the USA) and search for accident records. Not every accident will show up in the database, but sometimes you'll find out that the cream puff aircraft being advertised has actually been "substantially damaged" in an accident. The NTSB database search is free and there's no reason not to do it.
• Logbooks
All aircraft have logs, so if possible get a copy of them before you even go to look at the plane.
Read through the logs (yes, all of them): You'll find all sorts of interesting things in there, but what you're mainly looking for is good, consistent maintenance and regular use of the aircraft. As a secondary concern you're looking for major repairs (or significant minor ones) that you might want to ask your mechanic about.
• FAA Records
You can request a copy of the FAA's records for an aircraft online for a small fee. This includes registration information and any records of major repairs/alterations ("Form 337") filed for the aircraft. It is generally an "interesting subset" of the logs.
This is something you'll want to have handy when your mechanic looks at the plane, though it's not something you need to have before you go look at it yourself. Theoretically the owner should have all the documents that this record contains as part of their records/logbooks, but in practice paperwork sometimes gets "lost".

If all that looks good it's time to look at the plane:

• How is the overall condition of the aircraft?
Cosmetics can lie, so don't be dazzled by a shiny coat of paint and a nice interior:
• Is the on-board paperwork (ARROW) all in order?
• Are the tires, hoses, and other rubber components in good condition?
• Is the engine bay (relatively) clean? Are there any leaks, drips, or other items of concern?
• Are there obvious signs of damage (skin patches, dents, fabric tears, etc.)?
• Are there obvious signs of corrosion (bubbles under the paint, etc.)?
• Is the paint in overall good condition (no major chips, no cracks, no flaking)?
• Is the aircraft itself clean?
(As much as cosmetics lie, a plane that looks like it's been neglected probably has been...)
• Does the aircraft pass a very thorough preflight?
Go through the preflight checklist with an eye for anything abnormal -- ask yourself "Would I fly this aircraft today?". If the answer is no, think carefully about why.
If the answer is yes it may be time to test-fly with the current owner.
• Does the aircraft operate correctly on the test flight?
• Do the engine and propeller operate properly?
• Do all the instruments and avionics function correctly?
• Does the aircraft fly well? Can you trim for hands-off straight and level flight?

If the aircraft passes all your checks it's time to turn your mechanic loose on it - they will inspect the aircraft for problems (major and minor) that you as a pilot might not notice which can wind up costing you a lot of money. This pre-purchase inspection (and the ensuing negotiation based on what the mechanic finds) is usually the last stop before handing over your money and taking the keys.

• Note that reading aircraft logs is a bit of an art form - if possible sit with the maintenance department at a local flight school and go over the logs for some of their aircraft to get an idea what to look for. Mine make for some interesting light reading if you want to practice. – voretaq7 Oct 21 '14 at 16:35
• One of the things to check in the preflight are the avionics, specifically the things that interface with equipment outside the plane (primarily nav and comms stacks). Some light planes contain only a basic comms radio and a transponder; this setup is fine for VFR hops around a well-traveled area, but if you expect to use this plane to train for your instrument rating, or even to fly mixed-nav across country, you'll need nav radios to interface with VOR/DME/ILS. A two-channel nav radio with OBI/ILS is the absolute minimum to run IFR, and GPS comes highly recommended. – KeithS Apr 27 '15 at 19:28
• @KeithS Yeah, the avionics check will vary depending on the plane/equipment: A Cub with no electrical system won't have much to check, if anything. A tricked out 172 with a glass-panel retrofit & integration with portable devices may need an expert to look at parts of the system. – voretaq7 Apr 27 '15 at 20:09
• It's a good practice to also have an annual included with the final agreed on price. If the owner was very hesitant about getting an annual., I would be concerned. – timbo Jul 29 '15 at 6:53

Well, this is a much more opinion based answer, but I'll give it a go:

After that, I would say getting an independent inspection by a General Aviation mechanic, and go for a test flight with the current owner (hopefully they will be willing to fly in the aircraft).

Hope that helps.

• if they're not willing to fly the aircraft before you buy it, that's almost certainly a very good reason to not buy it :) – jwenting Oct 21 '14 at 10:02
• Hence my parenthetical. :) I would back away slowly if they refused. – Larian LeQuella Oct 21 '14 at 10:59
• slowly? I'd run for the nearest cover, expecting the worst to happen, lol. Seen enough "dodgy" light aircraft that might have been airworthy but didn't invite confidence (duct tape on the wing and vertical stab of a C172 for example...). If even the owner is scared to fly it it's got to be worse than that. – jwenting Oct 21 '14 at 11:03
• @jwenting you gotta move slow with crazies; sudden moves may startle them and set them off into some sort of fit. :) – Larian LeQuella Oct 21 '14 at 11:06