; (2) a plan for converting and upgrading existing ASOS/AWOS communications to the FAA Telecommunications Infrastructure; (3) an assessment of the use of unmonitored Navigational Aids (NAVAIDs) to allow for alternate airport planning for commercial and cargo aviation to limit ASOS/AWOS service disruptions; (4) an evaluation of additional alternative methods of compliance for obtaining weather elements that would be as sufficient as current data received through ASOS/AWOS