A CATALOGUE of cases alleging serious abuse of entertainment and travel allowances in the publicly funded Provisional Airport Authority is to be forwarded to PAA chairman and Financial Secretary Mr Hamish Macleod. The United Democrats' spokesman on the new airport, legislator Mr Albert Chan Wai-yip, who was criticised last week for making the allegations but failing to provide evidence of the abuses, said yesterday he was preparing a list of names, times and places for Mr Macleod so ''the PAA board will not be misled'' by PAA management. Mr Chan refused to produce the evidence publicly, however, saying he had to protect his source. A PAA spokesman has denied the allegations, but Mr Chan said his statement was ''misleading''. Mr Chan has alleged expatriate executives travelling overseas have been stopping off in their home countries for reasons not purely related to work, adding other staff had been running up entertainment allowances.