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(c) Ribswebs of lower wing, hull to wing engines, be made heavier and wing covering be made of veneer.  This to prevent trailing edge breaking under action of water, and to allow walking on wing when working on engines.

(d) Discontinue use of farring on brace wires and struts, hull to lower wings, as it is considered unnecessary.

(e) The luminous paint used on steering compass cards was not sufficiently bright for night flying, making lights necessary.  It is recommended that the quality of this paint be improved so that a course can be steered in case of failure of lights.  Figures should be placed over all 10[[degree symbol]] marks.

(f) The controls worked with sufficient ease to handle the machine in all air conditions encountered during the trip, but it is recommended that the rudder horns be lengthened so that control would be possible under worse conditions.

(g) Limber holes placed in floors and side Keelsons sufficient to drain water from part of hull to center line.

(h) It is desirable to have center line passage between forward and after compartments with a hatch between center engines.

(i) Pilot's seats to be made adjustable in both fore and aft and vertical directions.

(j) To improve control of wing engines and to eliminate a possible failure of present type of wing engine throttle, it is recommended that individual throttles be installed for wing engines.  All four throttles should be placed in the same line athwartships.  The wing engine throttles should be one inch longer and placed between the center engine throttles.

^[[E.F. Stone
W. Hinton]]

^[[A]]