353. A Proposed Change to ATA Specification No. 100


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M M Post: 353. A Proposed Change to ATA Specification No. 100. 1962.



This paper was presented at the Twenty-first Annual National Conference of the Society of Aeronautical Weight Engineers at Seattle, Washington, May 14-17, 1962. The Society of Aeronautical Weight Engineers was requested to conduct a survey to determine the overall opinion of the Airline Industry regarding a change to the weight and balance section of A.T.A. Specification No. 100.
Since this specification was originally written, the large jets have been placed in service with gross weights in the range of 300,000 pounds. In the not too distant future, we will be considering supersonic aircraft weighing in at 400,000 pounds of more.
The present provisions of plus or minus one0tenth of a pound weight change, and plus or minus 100 inch pound moment change, is not an unreasonable requirement when applied to piston aircraft. However, with a look to future requirements and the problems they will present, it is proposed that a percentage value to stated weight and moment changes would be a more practical approach when applied to jet aircraft and other, even larger, airplanes.
The proposed change will be outlined in this paper, and also the results of the survey conducted. It is hoped that the representatives of attending airlines will be in a position to indicate the opinion of their company regarding the presentation of this proposal to the A.T.A. It is requested that this opinion be stated on the sheet attached to the back of this paper.


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