papagei

Dear Mooniacs! If someone has a used GDC31 for sale, please contact me via PM ... Best regards from Germany! Lukas

I now contacted LASAR, Don Maxwell and Dugosh! I'll of course let you know any news.

And here is the floor without carpet and the sealed rudder pedal boots.

We also tried to keep the cowl flaps open in level, but even then the monoxide decreases. Today we checked the exhaust cavity panels, they have benn already sealed. During the following test flight the problem was still existent. I took some pictures of our work. Maybe an other M20J pilot is able to recognice any difference to his monoxide Free J. I also attached a picture of the front gear. Do see there any abnormalities ? Do you think it's possible that the monoxide is entering here ? So far, we have no clue .... Best regards Lukas

Just a short update. The work on the rudder pedal boots wasn't succesful. The monoxide still occurs. Due to the fact that it only appears during climb with retraced gear we will have a closer look on the cowl flaps area.

Thanks a lot for your suggestions ! Today we finally installed the rat socks. On the following test flight we still had round about 40 ppm carbon monoxide in the cockpit. So I looked as jetdriven mentioned closer to the rudder pedal boots. I removed the carpet and in fact there were several holes around them and it was possible to see the hangar ground. I hope that I can tell you tomorrow more after fixing them today with tape. Best regards ! Lukas

We tried yesterday to install the new rat socks but have been unable to pull them over the gear pushrod. It wasn't possible to open the bolted connection you can see on the thin end of the rat socks. Do you have any ideas or instructions ? Thanks a lot ! Best regards Lukas

I've got some news ! Today, we did another test flight in our mooney. We decided to check the carbon monoxide situation with extended gear. So we climbed to 5000ft without any indication of carbon monoxide ( 0 ppm ), went in level flight, everything was fine. We decided to continue the climb, but now we retracted the gear and got immediately a carbon monoxide indication of ( 47 ppm ) after the short climb from 5000ft to 5500ft. So it was clear for us that this phenomenom only appears during the climb with retracted gear ! I also looked for the rat socks. They are in very poor condition. Im sure that this fabric isn't air-proof anymore. Do you think that would be a suitable explanation ? Here's a picture. I also looked for some new rat socks, I found some on ebay: http://www.ebay.com/itm/Mooney-Gear-Tube-Boots-/181298239291?pt=Motors_Aviation_Parts_Gear&hash=item2a3637973b&vxp=mtr Do you think it's a realistic offer, or would you prefer another material or shop ? Thanks and best regards Lukas

N601RX, good idea ! I have also to mention that we have had one time mice in the aircraft, although it's hangared. Now we put some iron sheets around the wheels. Do you think it's possible that the mice came into the cabin over the main gear and destroyed the sealant or the tape you mentioned ? Will there be with a destroyed sealant a direct connection from the main gear into the cabin ? I think that could be an explanation. @Mike Ropers: We already checked the scat tubing. So far it looked fine ! Thank you !

I'm sorry, the readings are between 50 and 150 ppm. Usually one can say that per 1000ft AGL during the climb the readings will increase by 30 ppm. For example at 2500ft AGL 75ppm would be "normal". After a long climb also the button on the card turned black. Currently we are flying with two cards and the digital detector. KSMooniac, thanks a lot ! We will check it! But as far as I can remember, the door seal seem to be new. Even in flight there is no coldness or draftcoming in.

Hello Mooniacs ! During the last year I've had a lot of trouble concerning the carbon monoxide readings in the cockpit. We used additional to the small carbon monoxide cards a digital carbon monoxide detector. But it only appears during the climb, being in cruise it is absolutely no problem an the readings will decrase quickly. Now, we are at a loss. We checked and double checked everything, but we are unable to find a solution for this problem. Even our maintenance shop has no idea anymore. We carried out the following work: - We removed and checked the heat exchanger around the muffler. There have been no visible cracks, but for to be sure we also removed during a test flight the heat ducting into the cabin. But it was without succes. - We checked the complete exhaust system, from the cylinders to the tailpipe. Between the the muffler and the tailpipe was a leakage at the ball joint. There was a visible coverage of ash. We tightened the ball joint with a stronger spring kit and now it's absolutly leakproof. And again, it was ineffective. - Because we don't have a one piece belly, we even taped the gaps at the belly with adhesive foil. We thought it is maybe possible that the carbon monoxide is entering the cabin by this way. Without any kind of result. It's a '82 M20J, TTAF approximateley 2000hrs. Do you have any idea, to explain or solve the phenomenon ? I think mooneyspace is the best platform to reach the absolutly best mooney experts. We are now at our wits' end. Thanks a lot and best regards from Germany Lukas

Hello together, just found the homepage of Mooney worldwide aviation. http://www.mooneyworldwide.com/strategy/ They are showing a strategy 2012-2020, a Mooney billionaire resort, headquarters in Hong Kong, Beijing, Kerville and Miami ... What are your thoughts ;-) ? Best regards from Germany

We finally went for a new tailpipe. As jetdriven mentioned I ordered the tailpipe by aerospace welding (www.awi-ami.com) for just 399$ and also can highly recommend this shop. Call direct Charlie Feld, he's very friendly, competent and reliable. Best Regards Lukas

Thanks a lot for all the comments ! But now I would have a further question. As you can see in my picture, theres a connection between the fuselage and the muffler. Is this the usual factory condition or do you think it was added later ? Furthermore I have seen on some mooneys with a spring in exactly this position between the fuselage and the tailpipe. Is it needed or would you cut the connection in my case when moving back to a normal tailpipe ? Regards

We tried to remove it, but it's not so easy. Additional to the screw the muffler is fixed with some bolts in the existing pipe. It also would'nt be a problem to fly without it. Maybe we would have to pay some extra dollars landing fees. According to my information the original tailpipe was cut off at the end before the muffler was installed. But thanks a lot !

Thanks a lot for all the replies ! We want to install a new tailpipe and replace our muffler. I attached an image. The previous owner istalled it in 1999 as a consequence of some stupid german and european regulations in order to achieve a "better" noise certificate. But now we suspect the muffler to cause a corbon monoxide problem. We always have during climb readings on our digital CO - detector between 100 and 200 ppm depending on the duration of climbing. A classical detector card doesn't change its color at these levels. Our mechanic checked and double checked everything ( complete exhaust system, heat exchanger etc ... ). During cruise and descend the carbon monoxide is no problem. If you have any idea or an offer, please let me know! Best regards Lukas

Hi at all, I'm looking for a used Tailpipe for a M20J. We have here in Germany sometimes problems with the availability of parts. Paying with Credit card or paypal is no problem. If you could help me, please send me an email at lukas-straubinger@gmx.de Best regards from Germany

Thanks a lot for your answer allsmiles. What do you think in general about overhauled vacuum pumps ? Is it worth to buy a new one ? A new rapco would be 75 $ cheaper than a new tempest and I'm really unable to say, which manufacturer will deliver the better quality. Thanks a lot

Hi everybody, first of all, please excuse my bad english. I want to ask you from Germany for an advice concerning the two mentioned vacuum pumps. I want to replace my current Airborne 211 CC vacuum pump and don't know which manufacturer to chose. I don't have in my M20J a standby vacuum system or a standby artificial horizon. So reliability is very important for me flying IFR. Wich manufacturer would you recommend ? Tempest or Rapco ( both model 215 CC ) ? Thanks a lot Best regards