1893 Airport Rd, Kalispell, MT 59901

Our Products

Below are sections that list most of our products and upgrades available for the Piper Aztec, Apache and Geronimo; we hold over 40 STC's that can make your aircraft modern and practical.

scroll down to see them all, or select from the drop-down buttons above...

NOTE: All prices subject to change without notice, please call with questions.


Custom Piper Panel Upgrades

Piper Custom Instrument Panels

Diamond Aire can create a panel to exactly suit your needs



Piper Apache

Piper Apache Modifications

We can do extensive modifications to Apache's



Custom Piper Panel Upgrades

Apache to Diamond Geronimo Conversions

Montana Diamond Aire holds the exclusive STC for this engine upgrade for the Piper Geronimo.



Custom Piper Aztec Modifications

Aztec Modifications

Many of the following kits have previously been offered for the Apache model aircraft. All of the following are now fully STC’d for installation on the PA23-250 series aircraft as well. Prices do not include installation or freight charges.



Airplane Fuel Kalispell

Fuel Sales

Diamond Aire is proud to offer fuel sales again, with our state of the art new card reader system. We stock 100LL and JetA with easy 24 hour access at reasonable prices.

Our fuel island is located west of the runway complex, and look for our tall Diamond Aire sign and follow any western taxiway to reach our facility, where credit cards are gladly accepted every day of the week, including holidays.

Diamond Aire Kalispell Piper Apache Aztec Geronimo Upgrades Kits Modifications Panels

Montana Diamond Aire Inc.
Apache Modification Aircraft Corp

Call: 406-752-5092
Fax 406-752-5082

1893 Airport Road
Kalispell, MT. 59901