Avstar Aircraft of Washington, Inc.

10416 172nd St. E., Unit B
Puyallup, WA  98374
office (253)770-9964
fax (253) 770-0120
email:  avstarair@att.net

A customer desired extended range and increased useful load.  The answer?  Beryl D'Shannon wing tip fuel tanks.

Note:  To decrease your download time we have made these pictures thumbnails.  Just click on any picture to see a larger version of it.  Use your browsers back button to return.

Tip Tanks Image 1
Beech Debonair arrives to our facility for BDS tip tanks.

Tip Tanks Image 2

Holes are marked, plotted on masking tape from the original screw locations. Then, the original tips and ailerons are removed.

Tip Tanks Image 3

Tip tank held in place, a couple of holes are marked. Tank removed, holes then pilot drilled; back onto aircraft for fit. Holes adjusted as required.

Tip Tanks Image 4

After confirming alignment, the piloted holes are upsized, then the tip screwed back on. Remaining holes are plotted, tip removed, holes pilot drilled, back on aircraft for confirmation, removed. All holes made to proper size.

Tip Tanks Image 5

Fuel lines installed to wings. When running adjacent to moving parts (screws in inspection panels), make sure there will be no chafing.

Tip Tanks Image 6

Wiring at wing was changed for plug into tip tank harness.

Tip Tanks Image 7

Location for transfer pump and valve was plotted. Then the assembly was mounted.

Tip Tanks Image 8

Fuel lines are carefully made so there is no binding or stress. Clearance to moving landing gear parts is checked with every line placement.

Tip Tanks Image 9

Plumbing completed at inboard cell access plate.

Tip Tanks Image 10

Final connections are made at tip, tip tank installed and secured. Aileron re-balanced as required and reinstalled.

Tip Tanks Image 11

"Pump-On" indicator lights were added above newly installed transfer switches. Eventually, a left / right selectable fuel level gauge will replace the clock. Required placards installed. Return to service paperwork includes the form FAA-337 (including listing any variations to the STC'd product), weight and balance / equipment list entries, AFM / POH supplements installed, and the log book.