Next annual due 10/2020, flying monthly for past year, extensive 2018 annual @ Diamond Aire in Kalispell, MT the Aztec STC headquarters. Brakes bled, gear & flap actuators serviced, gear bearings repacked, oxygen system tested & full with 6 masks, prop brushes/boots inspected/tested new hot plate ready to install in 20 mins for full de-ice. No damage history. Full Logs. 177.2 gallons usable. 30 gallons/hour 165kts @ 6,000 feet. We have not used oxygen but 200+kts in low flight levels possible.
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Lycoming TIO-540-C1A 250HP 8.5/1 compression. Great engines. Both 1230 SMOH, 2000 TBO. Right/80 #1 76 #2 76 #3 76 #4 75 #5 78 #6 78 Left/80 #1 79 #2 75 #3 78 #4 74 #5 72 #6 70 Engines always operated with care. Mixture set 1525F or cooler (125F rich of peak per POH). 20''+ of Manifold power kept in during descents always, power reduced gradually during descents...no shock cooling. Turbos always cooled for 5 minutes on the ground per Lycoming manual.
Both engines produce 35''+ Manifold of Turbo Boost. Manifold needles react within a second or two so waste gates not too sticky. One turbo overhauled in 2018. New baffles then and other engine work. JPI EDM 790 installed then, 2 TITs, 12 CHTs/EGTs, 2 Oil Temps, OAT, etc.
At 26'' Manifold & 2,400 RPM (Medium Power Cruise - POH) all CHTs between 350F-380F @ 6,000' & OAT 60F, 165kts which matches POH/book table exactly...engines cruising superb.
JPI EDM 790 Engine Monitor
Aspen 1000 PFD
S-TEC 55X Autopilot
Garmin 430 & 530 WAAS
GMA340 Audio Panel
King KT-76A Mode C
King KR-76 ADF
Great looking exterior with minor paint missing in a few places but overall shows very well. Interior is decent...spacious for 6 people more than any other light twin. We fit 6 full size suitcases in nose and rear baggage compartments.