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Fuel
Systems
Manufacturer Requirements
FEDERAL LAW
183.550 - Fuel tanks: Installation
(b) Each fuel tank must not move at the
mounting surface more than one-fourth inch in any direction.
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The basic intent of this requirement is to
restrict the movement of an installed fuel tank with respect
to its mounting surfaces to a minimum amount. No movement
would be best. To establish a quantitative test, one-fourth
inch in any direction has been selected.
TO COMPLY WITH THE LAW
- The tank cannot move more than one-fourth
inch in any direction, measured at its mounting surface
when force is applied in the forward, aft, port, starboard,
and vertical directions.
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