The Civil Aeronautics Board has proposed new standards of conduct for its employees which would prohibit them, for the first time, from accepting fee lunches or flights from those who are in any way affected by the board's actions.

Under the proposed rules, a board employee would be able to accept a free lunch only as on a speaker or participant in a program, or in the course of out-of-town travel under certain defined circumstances.

Participant in inaugural flights - those involving new routes and planes - will be allowed only when the board determines that it is in the best interests of the government and when the board pays the pro rata of cost of the employee's trip, including lodging and meals.

The board said the new, stricter regulations are designed to eliminate conduct "which might give rise to an inference that their actions were motivated by considerationsother than those which should lawfully and ethically control their conduct and actions."

The board insisted its ex* isting regulations call for "high standards" of conduct call for "high standards" of conduct and establish appropriate standards for limiting financial and other holdings of employees which might give rise of conflicts of interest or the appareance of them.

"Nevertheless, almost 10 years have elasped since we have reviewed these regulations in their entirety, and the administration of the controls during this period has not been wholly satisfactory," it admitted.

A 1975 report by the General Accounting Office was critical of the way in which the board policed its existing regulations, and the proposed rules create an extensive administrative mechanism for insisting on and processing employee reports of their financial holdings.

Under board policy, employees, including consultants and experts working under contract, and including spouses and minor children, would be prohibited from holding any financial interest in "civil aeronautics enterprises" and the new regulations would expand the definitition of "civil aeronautics enterprise" to specifically include intrastate air carriers and any governmental authority engaged in an enterprise such as an airport.

Under the proposed overall definition - an enterprise "primarily" aeronautical in nature however, it appears that stock in a conglomerate that owns an airline could be held by a board employee if the conglomerate's major business was in another endeavor.

The board's regulations propose a mechanism to consider waivers of the financial holdings rule, but will make available to the public reports of those instances. The board will also expand the number of employees who are required to file broader reports on their financial, employment, and other interests, but information from these would be confidential.

The proposed regulations will be on the public record fo