PIPER COMANCHE SERVICE MANUAL NOTES (eont.) IS. If the fuel selector valve has 400 hours or more total time in service, inspect valve within the next 100hours of aircraft operation and every 400 hours thereafter. Inspect the valveinaccordcnce with instructions in section VIII of the service manual and lubricate per lubricattion chan in section II. 16. Refer to flight manual supplement for preflight and flight check, for intended function in all modes. 17. Replace all Rajay turbo air. fuel and oil hoses upon condition or every five years. 18. Refer to and comply with Airworthiness Directive 82·19-01. 19. Refer to VSP 69. Interim Revision: 9/2 1/86 lES INSPECTION