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Various issues to a new comanche pilot
Also there is an air vent underneath the instrument panel that blows hot air on my feet. We have checked the heat and air pulls and they work good. The air blows whether the heat/air are closed. The duct comes from the instrument panel and goes to the air duct by the air filter. It should be cool air not warm air, does the muffler affect the duct air because of its proximity? Have people disabled it in the summer months?
Last the airplane is equipped with two GNS480s and on the 121 band the ELT will interfere with the GPS signal. Another words if I contact ground, when they talk to me GPS signal goes to half, when I transmit back the GPS signal goes away completely. We placed a filter on the ELT, but to no avail? Avionics shop says get a new ELT, problem is spent too much money working on the problem. Any ideas? Thanks for the help I am new to the airplane.
- Jack Healan
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- Joined: Tue May 22, 2012 6:00 pm
Re: Various issues to a new comanche pilot
Welcome to Comanche shipowner and to the Forum
In terms of water in the fuel. after 42 years of twin operations - 20 with tip tanks - No, water in fuel s not normal. It is recommended that fuel be sumped before the first flight of the day and after the last one. Don't know if singles have the same 50 hour fuel sump area AD or not. Do know that tight fuel caps, good fuel door gaskets, non-leaking fuel bladders and good fuel sumping hygiene and un-watered fuel produce 100% contaminant free fuel sumps for me.
Also know that Miller wet wings will nearly always produce dirty sumps and at times so will Nacelle tanks - tips will rarely (not at all after new caps)
Hope this helps.
Patricia Jayne (Pat) Keefer ICS 08899
PA-39 #10 Texas
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Re: Various issues to a new comanche pilot
- Ray B
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Re: Various issues to a new comanche pilot
How much have you flown the 250 since you got it. How many times has it been all over wet. Do you see any fuel stains under the wings or at the wing root? Any idea about the age of the bladders? Assume you have 60 gallon wing capacity plus 30 gallons in wing tanks. Suggest you keep all tanks topped all the time. You may be seeing residual water from time past. Most of us only see water after heavy rain parked or in flight. Cover the tank lids when washing.
dap8@comcast.net
- David Pyle
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Re: Various issues to a new comanche pilot
Dave Gitelman
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Re: Various issues to a new comanche pilot
- Jack Healan
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Re: Various issues to a new comanche pilot
Thanks for all the help wish I could figure out the heat issue as well.
JH
- Jack Healan
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Re: Various issues to a new comanche pilot
Kristin Winter- ICS member
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Re: Various issues to a new comanche pilot
Thanks for mentioning this - I've actually had water get in the aux tanks that way.
PJK
Patricia Jayne (Pat) Keefer ICS 08899
PA-39 #10 Texas
N3322G- ICS member
- Posts: 1911
- Joined: Thu May 08, 2008 1:58 pm
- Location: Fort Worth, Texas area
Re: Various issues to a new comanche pilot
- Kelly W Kober
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Re: Various issues to a new comanche pilot
- Jack Healan
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Re: Various issues to a new comanche pilot
Dave Gitelman
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