Cessna Service Bulletin SEB09-6 Rev 1
Purpose: To do an inspection of switches installed in the landing light, taxi light, and beacon light circuits for time in service. Switches that have been in service for four or more years shall be replaced and the month and year of installation shall be written on the new replacement switch. Switches that have been in service for less than four years shall have the month and year of initial installation written on the switch.
Note: Compliance with SEB09-6 Revision 1 is not required if in compliance with the original issue.