A PROPOSAL to give the Financial Secretary, Sir Hamish MacLeod, power to use the contingency fund for the new airport's construction was yesterday received with reservations by Legislative Councillors. Some members of the United Democrats (UDHK) were joined by independent Emily Lau Wai-hing in accusing the Government of trying to cut Legco's power over the financial arrangements for the airport. The proposal, submitted by the acting director of the New Airport Projects Co-ordination Office (NAPCO), Bernard Lam Moon-tim, would give Sir Hamish the power to increase the estimates for projects under the airport core programme by a maximum of 10 per cent, making use of the ''contingency pool''. The money in the pool comes from the contingency fund approved for the items in the airport programme, equalling five per cent of the project cost. The latest figures shows it has amounted to $1.84 billion. It was proposed that Sir Hamish would then delegate the power to the NAPCO director, who would make decisions on requests below $10 million. Instead of endorsing the funding, the Finance Committee of Legco would be presented with quarterly reports on the use of the contingency pool. Calling the proposal a move to reduce the power of the Finance Committee, the UDHK's Lee Wing-tat said it would allow the Government to alter the financing of the airport projects in view of the huge sum gathered in the contingency pool. The Liberal Party's Steven Poon Kwok-lim said this would make it difficult for Legco to check on the Government's use of money. They were supported by Miss Lau, who said Legco should be notified of the use of the fund before it was deployed. Moves will be made later this week by the Provisional Airport Authority to end the deadlock over a contract conditions row with the Hong Kong Construction Association. The authority plans to write to the association clarifying the most contentious aspects of its contract conditions. These procedural notes will explain its thinking behind its contract clauses and how contractors should interpret the conditions. Contractors, acting on the advice of the association, have boycotted one contract for the construction of temporary ferry piers. They have also forced the authority to give an extension of time for the return of bids for two further jobs. It is uncertain whether the guidelines will be enough to settle the concerns.