This is a solicitation for a firm-fixed price purchase order to be awarded on a sole source basis to Aerokool Aviation Corp. for three Water Collector units. The work involves repairs and overhauls requiring specific technical expertise and OEM parts from Hamilton Sundstrand Corporation. The small business size standard for this restricted solicitation is $40 million. Only quotations with F.O.B. Destination or F.O.B. Origin shipping terms will be accepted.