A CLINICAL psychologist, social workers as well as scores of doctors and nurses were on hand as the Hospital Authority swung its full disaster plan into action yesterday in response to the first airport emergency since its establishment in 1990. Twenty-eight passengers were sent to Queen Elizabeth Hospital, where more than 60 medical staff stood by for the rescue. Only two of the patients needed to be admitted while 21 of them, including a flight attendant, were suffering from shock or minor injuries. They were aged between seven months and 65 years old. The other five were not registered as they said they were not hurt. The two men admitted in fair conditions were Yeung Tung-yuen, 45, who dislocated his left shoulder and injured his backbone and Teng Shu-hsiang, 38, suffering from angina. The others were discharged in the afternoon, except one, who had to stay in the observation ward. ''Basically we responded quite well in the sense that we have a well organised disaster plan,'' Senior Executive Manager of Professional Services Dr Lai King-kwong said. ''There's no perfect way to do this, but the magic touch is the communication and co-ordination.'' Hospital Chief Executive Dr York Chow Yat-ngok said they received an alert from the airport at 11.40 am. ''Forty nurses and 20 doctors were mobilised immediately, while an emergency team comprising one doctor, two nurses and two supporting medical staff were sent to the airport,'' Dr Chow said. He said one of the doctors mobilised was from the Obstetrics and Gynaecology Unit as one of the passengers, Lam Pui-yin, 28, was six months pregnant. Two social workers and one clinical psychologist were also put on standby to counsel the injured. ''When we are informed that there were more than 200 passengers, we have to prepare for more than 200 patients and heavy casualties,'' Dr Chow said. But since the Accident and Emergency Unit of Queen Elizabeth Hospital could not take care of more than 200 patients at a time, Dr Chow said they contacted other hospitals to go on standby. ''We informed Kwong Wah Hospital and Christian United Hospital to offer assistance if necessary,'' he said. Some of the routine normal services of Queen Elizabeth Hospital were affected by the emergency mobilisation. The first patient arrived at the hospital one hour after the accident. Many of the passengers were able to walk in to the Accident and Emergency Unit. Special traffic control plans were implemented by police to allow ambulances a clear ride from the airport to the hospital. Emergency measures at road junctions along Sung Wong Toi Road, To Kwa Wan Road, Chatham Road and Wylie Road caused jams elsewhere in west Kowloon.