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Used Avionics Buying Guide
Garmin Panel Mount
GNC 300XL, 250XL, 155XL
GTX 330, 327, 320
GMA 340, 347
GPSMAP 396 + 496 + 696
GPS III Pilot
KLN 94, 90B, 89B
KY 97A 96A 92
KY 196A 197A
KMA 24 20, KA 134
Apollo / UPSAT / IIMorrow
MX20, MX200 MFD
Michel/TKM MX series
PS Engineering Audio
Northstar M1, M2, M3
Argus, Moving Maps
Indicators & Gauges
Aircraft For Sale
Used Avionics Buying Guide
By following a few key guidelines you can avoid frauds and have a rewarding experience purchasing avionics on eBay or from other sites such as AvionicsList.com.
When you find an item you are interested in purchasing, make sure you research its fair market value. eBay allows you to view recently completed auctions where sale prices can be checked. To do this, search for your item on eBay, under 'Search Options' on the left side, check the 'Completed listings' box, then click the 'Show Items' button. Items with a green price sold, those with a red price did not sell.
Before purchasing big ticket avionics, make voice contact with the seller prior to sending any funds. Fradulent sellers will probably refuse your request for a phone call.
Check the seller's history. To do this click on the number next to the seller's name. This will show you the
seller's feedback history. Look for recent feedback left by Buyers. Click on the item # on the right to view
item details for each feedback.
If buying a used panel mount GPS, find out if the following are included:
A note on wire size. You may find a radio that includes a wire harness. If the harness is complete and uncut it can save significant time and money during installation. If the harness was used in a 24 volt system and you plan on installing in a 12 volt system be sure to verify that the wire gauge is safe to use in a 12 volt aircraft. One advantage of 24 volt systems is that smaller diameter wire can be used. 12 volt systems on the other hand, generally must use larger wires to supply power to the same radio. This is more of an issue with newer avionics that are designed to operate over a wide voltage range, typically 10 to 30 volts.
Some sellers offer a Dead On Arrival (DOA) guarantee. This means the seller is confident the item will not be dead
when you get it. Other items are sold with a bench test guarantee. This means the item is guaranteed to bench test
OK but not guaranteed to work in your aircraft. Sellers do this because many times radios are removed as defective
when the real problem is related to antenna or wiring issues.
It is common for the majority of bids to be placed during the last few minutes of an auction and for the price to rise significantly. When you bid and enter a maximum price for an item, eBay will automatically rebid for you up to your maximum price when other bids are made.
Make sure to ask the seller about boxing and shipping. Avionics should be shipped in large boxes with a minimum of 4 inches of foam surrounding the radio. It is especially important that indicators and any instrument with a needle movement be double boxed. The inner box for an instrument should provide at least 4 inches of foam, the outer box should provide another 4 inches of shipping peanuts or comparable material. Indicators should always be shipped solo and never in the same box with a Nav/Com/GPS. All avionics shipping boxes should then be marked as "Fragile". The extra $15 you'll spend to ship this way is one of the best things you can do to insure your purchase.
After the transaction is complete be sure to leave feedback. Feedback for buyers is usually expected when the buyer
pays. Feedback for sellers is generally left when the item arrives and is verified to be as represented.
Fraudsters will gain access to legitimate accounts using spoof emails. Make sure you understand what a spoof email is and how to avoid becoming a phishing victim. Take some time to read the eBay spoof tutorial.
This page on craigslist contains helpful information on avoiding on-line seller scams.
Good luck with your search.