14 CFR 23.531 - Hull and main float takeoff condition.

Code of Federal Regulations - Title 14: Aeronautics and Space

Updated to: January 01, 2011

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Title 14: Aeronautics and Space

CHAPTER I: FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

SUBCHAPTER C: AIRCRAFT

PART 23: AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES

Subpart C: Structure

: Water Loads

23.531 - Hull and main float takeoff condition.

For the wing and its attachment to the hull or main float?

(a) The aerodynamic wing lift is assumed to be zero; and

(b) A downward inertia load, corresponding to a load factor computed from the following formula, must be applied:

EC28SE91.006

Where?

n=inertia load factor;

CTO=empirical seaplane operations factor equal to 0.004;

VS1=seaplane stalling speed (knots) at the design takeoff weight with the flaps extended in the appropriate takeoff position;

?=angle of dead rise at the main step (degrees); and

W=design water takeoff weight in pounds.

[Doc. No. 26269, 58 FR 42161, Aug. 6, 1993]