I REFER to Mr C.B. Cluer's letter (South China Morning Post, December 19) in response to mine (Post, December 13). I accept with thanks Mr Cluer's offer to visit the Government Flying Services and will take this up after the festive season. However two further points arise as a result of further inquiries and activities which I would like Mr Cluer to research and provide an answer to. First, the helicopter which landed at 01.04 hours on December 16, powered down its engines to idle immediately after landing, only powering up 10 minutes later when taking off. The difference in sound levels is dramatic. Can this now be adopted as the standard practice for night landings? Second, I understand that the reason for flying close to Wylie Court (which the Government has studiously avoided mentioning), is the location of the landing light on the top of the rugby pitch pavilion. If this landing light was moved further north then the effect on Wylie Court would be immediate and noise levels could be substantially reduced. Could Mr Cluer please make arrangements to move the light? Finally could I request a response to the question in my previous letter - what is the programme for finding and bringing into operation a permanent landing facility for Queen Elizabeth Hospital?