RAWALPINDI, Dec. 5—With Indian air attacks over West Pakistani cities apparently in creasing and the Indian Navy threatening Karachi harbor, 378 foreign civilians, mostly Americans, were evacuated from Karachi today.

A chartered Pan American World Airways Boeing 747, the first civilian airliner to arrive in Pakistan since general fighting began Friday, was used in the evacuation. Of the passengers, 307 were Americans.

The evacuation was carried out with assurances from India that Karachi would not be attacked while it was being conducted.

Shortly after sunrise, two Indian Air Force fighter‐bombers strafed the airport at Rawalpindi for the second day in a row.

Today they destroyed two planes parked at the field—a U‐8 light transport plane with United States Army markings and belonging to the United States Embassy defense attaché and a twin Otter belonging to the United Nations observer group here.

Intruding Indian planes have kept sirens wailing in many Pakistani cities especially at night.