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I have always “felt” that speed brakes might increase the stall speed in a Mooney. However, never really read anything specific nor does the POH publish any stall speeds with the speed brakes deployed. So, thought I would take to the skies and do a “test” flight. I was a bit surprised and now believe I understand their effect better. Stalls in a Mooney Ovation - effect of weight and speed brakes.

Mooney Vacuum Speedbrake Installation Manual View File Old installation manual for Mooney vacuum speed brakes - source Precise Flight Submitter gacoon Submitted 04/13/2018 Category Safety & Techniques

Looking for a used set of speed brakes. Thanks! Mike

Ive had several persistent maintaince issues that seem to be reoccurring and I was hoping that someone could shed some light on these issues. 1. Autopilot. So I know theres been many posts about what a horrid combination the G1000 and the Stec 55 is and Im learning this. Long story short whenever ANY pitch mode is activated the autopilot runs away. Typically up but sometimes down. So After a few trips to the shop my avionics tech has asked me to disconnect the Altitude Transducer from the Autopilot to see if that remedies the issue. I spent the better part of this afternoon trying to get find the damn thing to no avail. Im hoping someone can tell me just where the damn thing is on the plane. or if they have any wisdom on the subject. 2. Speed brakes. This has been confusing me for awhile. About half the time my speed brakes wont deploy on the ground and if they do when retracted they "Slam" back into the wings very fast and violently. They work 100 percent fine in flight. They were sent to Precise flight who told us there wasn't anything wrong with them. Its just annoying and Im worried about repeated events damaging the system. 3. pannel Backlighting. I was changing the Light bulb in the compass and saw a spark long story short i think i blew the fuse for this however i checked every fuse I could find and none of them were burnt out. Again Any wisdom? Thanks everyone in advance! this is my first plane and I'm trying to do everything to keep in the best shape I can!

Hello all.... a while since I've been on the site. Work and flying!!! My left speed brake is not retracting fully... as in ~1/8 up. When the Master is switched to off, it will pull down flush. I realize these are electric but I do not know exactly how they are supposed to operate. I am assuming some sort of electric actuator to lift up and down and N/C spring return (Down) if Powered Off. It looks like the Brake that is not returning flush is slower in actuation as well. Does anyone have any detail on the system...schematic or experience? Thanks, Rick

I have more pics but didn't have the space to upload them. Please PM me with an email and I can send you more pics. Sorry. 1964 Mooney M20E Super 21 For Sale One owner airplane since 1967. Owner very particular. Aircraft and logs impeccably maintained. No corrosion at all. 1) Engine a) 629 hours TTSMOH Alternator kit c) Chrome cylinders 2) Airframe a) 2888 Airframe TT – Minimal damage history - gear up in 1980. All repairs documented. 3) Propeller: a) 18 SMOH by Hartzell for overhaul & new “B” hub installed. 4) Radio Navigation Equipment: a) Apollo MX20 Multifunction display w/ new database Apollo GX 50 number 1 GPS w/new database c) Apollo SL30 number 1 Nav / Comm d) PS Engineering PMA7000M-S Audio panel e) Apollo SL60 number #2 GPS & Comm f) Phoenix Foster F4 Loran - removed g) Apollo 360 Moving Map slaved off of SL60 GPS h) Mid Continent Deviation Meter slaved off of SL60 GPS i) Terra TRD-250D Transponder j) Apollo Trans-Cal Encoder k) West Coast Voice Enunciator l) Insight Strike Finder m) S-Tec ST-050 system 60 Pitch Stabilization system (Altitude hold, Vertical speed, Glide Slope & Trim) n) Century I & Century IIB Autopilot system switch selectable slaved o) Century NSD 360 HSI p) Aircraft Components Inc. Voice alert system. Vocal gear warning & Stall Warning into audio system. q) JPI 701 engine monitor with Oil temperature, Outside air temp & 700900-1 Fuel flow options. r) Aero Trim Aileron Trim s) PAI 700 Compass Card with compensating balls t) Electronic heading pointer slaved to remote gyro 5) Equipment & Upgrades: a) Strobes Pitot Heat c) O&N fuel Bladder kit d) Precise Flight Manually Activated Speed Brakes e) Bob Fields manual inflatable door seal f) Precise Flight Standby Vacuum system g) 2 Bruce’s Custom Canopy covers. h) New Concord Battery i) New ELT battery j) New pilots “6 pack” Instrument panel being made now k) Challenger High Flow (K&N style) Air Filter l) One Piece Windshield m) Rosen Visors 6) Paint, Glass & Interior: a) Paint in Fair to good condition Interior in excellent condition c) Glass in very good condition 7) Major Speed Mods a) flap, aileron, rudder gap seals reverse brake c) dorsal fin d) lower cowling enclosure