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Skywagons >> Airframe Ideas

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brettandringa
owner


Reged: 11/06/08
Posts: 25
Loc: KDRI
Javelin 18 Gallon Aux Fuel Tank Info
      #10514 - 01/09/09 05:53 PM

I have a Javelin auxiliary fuel cell that was installed in 1963 on my 53' 180. I have the STC for it, and that includes weight and balance information for the tank installation, but not the arm for fuel in the tank. I don't believe the company is in bussiness any more.

My question is whether anyone has one of these tanks installed or has information on where to find weight and balance data on them? Is the Weight and CG data in the STC for the installation the same for the arm of the installed fuel?

Brett
North Pole, AK


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hilltop180
Owner/A&P/IA


Reged: 02/26/04
Posts: 254
Loc: Anch, AK & Fredericksburg, TX
Re: Javelin 18 Gallon Aux Fuel Tank Info [Re: brettandringa]
      #10516 - 01/09/09 10:43 PM

Brett-

The Javelin was included in the TCDS for the C-170;

*113. 18 gal. auxiliary tank installed in accordance with Javelin Aircraft Co., 24 lb. (+99)
1405 S. Oliver, Wichita, Kansas. Installation Instructions dated September 15, 1955, and dwgs. Nos. 782-1 and 787 for landplanes and dwgs. Nos. 782-1, 782-2, and 787 for seaplanes.
(See NOTE 1 for data on unusable fuel)

NOTE 1. Current weight and balance report including list of equipment included in certificated empty weight, and loading instructions when necessary, must be in each aircraft at the time of original certification and at all times thereafter............. When Item 113, 18 gallon auxiliary fuel tank, is installed an additional 3 lb. unusable fuel at (+99) must be included.


Note 1 shows the arm will be the same for the Javelin tank and the gas inside it.

The arm of the Javelin tank on your plane may be different than the 170 but the arm of the gas inside the tank should still be the same as the arm for the tank itself.


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brettandringa
owner


Reged: 11/06/08
Posts: 25
Loc: KDRI
Re: Javelin 18 Gallon Aux Fuel Tank Info [Re: hilltop180]
      #10517 - 01/10/09 04:36 AM

Thank you very much. Mine is under a 337 with a weight and balance addition and a flight supplement for 180. The key piece is that mine doesn't reference 3 gallons of unusable fuel. I think that 3 gallons listed at (+99) on your TCDS is the deal breaker.

I have also discovered that my weight and balance for the plane lists the 2 rear seat passengers at (+48). This is well forward of the (+70) that is listed in the TCDS 5A6. I have the original bench seat.

This has all motivated me to do a complete scrub of the equipment list and reweigh the plane in the next annual (it's in storage now while I'm deployed to Iraq). Thanks for your help.

Brett


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The International 180-185 Club does not review, endorse, nor necessarily agree with anything posted on this Forum. No warranty is provided in regards to the legality of any aircraft modifications, nor for your personal pilot skills in performing any maneuver, including landings.