The International Cessna 170 Association

Does the TCDS for this Mooney require a vacuum pump or a vacuum system of which the pump is a part? Could a subsequent STC (Instrumentation not powered by vacuum) modify the requirement? Is it possible that Mooney intended these models to have a vacuum system per type design? My recollection from co...

You might try Del-Air in Porterville, CA. Haven’t been by there in a while but they had a large inventory of older Cessna parts and possibly could assist in fabricating a replacement. Also T&M Aviation in Ukiah, CA might be a resource. If my memory serves they offered service and recovering Cess...

There’s no airport under P49, so you can fly around it. Maybe it’s only active when he’s there? (Probably not) I think the TFRs around a regular presidential location should allow security waivers for known pilots based at these airports. Maybe using discrete transponder codes? It makes little sense...

Looks like he forgot to tighten his lug nuts or maybe over stressing them (hope the other driver was ok). The ones that get me are the mods where the truck slams flat on the road and starts hopping. Hydraulics. Ever seen those? Some guys are really serious about that stuff. In California, you can ge...

Does the airspeed indicator and altimeter display rely on electrical supply? (Goes blank without electricity) If so, do the certification requirements for pitot static systems applicable to this airplane allow for these required instruments to be dependent upon electrical supply which is subject to ...

Airspeed indicators and altimeters are required for VFR operations and to get answers on your question (“What am I missing?”), I would recommend consulting a certified repair station or technician that installs and maintains avionics and pitot static systems. I am assuming this instrument replaces y...

Looking forward to some more pictures of the progress. If you have the original cabin top skin you might want to fasten that in place before you take too much apart. To remove the aft bulkhead you will have to remove the door sills, at which point you will want to cross brace across the door openin...

Lycon in Visalia, CA can perform “port & polish” on new Continental cylinders and I recall reported 159hp on their dyno for an O-300 some years back. Is that a credible claim?

More thoughts on this: An A&P should think twice before signing any record of installation of this device because of the liability attached to his/her signature. So another recommendation might be for the owner/pilot to take responsibility for both installation and ongoing operation. With or wit...

Flaps, leading edge devices, trim systems are considered “secondary” controls. They enhance or ease the pilot’s control of the airplane. They are part of the aircraft control system so would come under the description of major alterations in Part 43. Some will certainly argue with that, but my exper...

Possible minor alteration to the trim wheel?

I apologize for any inference that the original poster was doing anything improper. There is nothing wrong with making an inquiry like this on a public forum with the experience and knowledge of this association. I was prompted by the question of verifying part numbers when maintaining aging general...

Thanks George, that makes your post a lot more clear, at least for me. An IA friend recently mentioned his worries about owners who buy their own parts between annual inspections and do not record the installations. Then they sometimes forget to mention it to the inspector who is responsible next ti...

The original installation instructions have often been overlooked…. but instruct to remove the internal check-valve spring and install the check valve without it. I don’t think this answers the question about whether or not the check valve on EBay would be suitable for installation on a Cessna 170....