WASHINGTON, April 7—The United States called on Pakistan today to take “every feasible step” to end the conflict there and to achieve a “peaceful accommodation” in the civil disturbances that have racked the eastern half of the country since March 25.

Noting that it was prepared to assist in any international humanitarian effort to alleviate suffering caused by recent events, the United States also urged the Pakistani Government to avail itself of offers of assistance from the international community.

“We have discussed these matters with the Government of Pakistan,” Charles W. Bray 3d, State Department spokesman said, “and we will continue to do so.”

The Pakistani Embassy declined immediate comment on the United States statement. However, an embassy spokesman said that Gen. Tikka Khan, martial law administrator in East Pakistan had stated in Dacca on Monday that there was “no food shortage” in the province.

The embassy spokesman said he was unable to state whether there were shortages of medical supplies, clothing, housing and other items of civilian needs.

Dacca Airlift Completed

Mr. Bray said that the airlift of—approximately 500—private American citizens, official dependents and United States employees from Dacca was completed yesterday.

He indicated that approximately 200 Americans, including 31 Government employees, had remained behind. Some of these, he explained, preferred to remain, and others lived too far from the Dacca Airport to catch the airlift.

Until now the Administration has refrained from discussing the Pakistan situation out of concern for its nationals in the danger zones.

It is increasingly clear, Mr. Bray said, that there have been “substantial damages and casualties.” Normal life in East Pakistan has been “seriously disrupted” and United States sympathy goes out to the “victims” of recent events in the area, he said. Reports here estimate civilian deaths at more than 5,000.

Mr. Bray declined to disclose whether the United States was implying in its call for “peaceful accommodation” a preference for political autonomy for East Pakistan.

This was the key to the program being urged by Sheik Mujibur Rahman, head of the Awami League, East Pakistan's dominant party—and a key factor in provoking the armed response by the Pakistan Central Government, headed by Gen. Agha Mohammad Yahya Khan, on March 25.

Sisco Voiced Concern

Mr. Bray did, however, disclose that Joseph J. Sisco, Assistant Secretary of State for Near East and South Asian Affairs, had expressed the Government's “concern” Monday to Agha Hilaly, the Pakistani Ambassador, over evidence that American arms, furnished to Pakistan between 1954 and 1965 for defense against Communist aggression, had been used to repress Bengali dissidents.

Officials here are aware of mounting criticism in Congress, in the press and in academic circles over the Administration's reluctance to date to speak out against repressive Pakistani tactics. However, they cite three reasons.

First, they say, there has been fear that American citizens might be subject to reprisals and their evacuation jeopardized if the United States were to officially criticize Pakistan actions — even the use of American weapons.

Second, they say, reports of conditions in East Pakistan have been “conflicting.” They do concede that, except for the Pakistan Government's own insistence that all is “calm,” most of reports from eyewitnesses in Dacca and Chittagong, from missionaries, technical experts, students and others who have reached India, Ceylon, Iran and other countries stress the Pakistan army's brutality against the local Bengalis.

Finally, officials say, the United States has viewed the struggle between the Pakistan central Government and the dissident East Pakistanis as essentially an “internal” matter and that therefore American pronouncements on the situation would be unjustified.

Total United States military aid to Pakistan, from 1954 when it began until it was ended after the Indian‐Pakistan War in 1965, will not be disclosed by officials on the ground that this avoids “provoking” the Indian regime.

It is reliably said, however, to have exceeded $1‐billion and to have included Patton tanks, armored personnel carriers, heavy artillery, automatic weapons and jet fighters.