background image FIG 2 - - Taxiway Lead - On Light Configuration TBL 2 - - Runways With Approach Lights Lighting System No. of Int. Steps Status During Nonuse Period Intensity Step Selected Per No. of Mike Clicks 3 Clicks 5 Clicks 7 Clicks Approach Lights (Med. Int.) Off Low Low High Approach Lights (Med. Int.) Off Low Med High MIRL Off or Low HIRL Off or Low VASI Off NOTES : Predetermined intensity step. Low intensity for night use. High intensity for day use as determined by photocell control. TBL 2 - - Runways Without Approach Lights Lighting System No. of Int. Steps Status During Nonuse Period Intensity Step Selected Per No. of Mike Clicks 3 Clicks 5 Clicks 7 Clicks MIRL Off or Low Low Med. High HIRL Off or Low Step 1 or 2 Step 3 Step 5 LIRL Off On On On VASI Off REIL Off Off On/Off On REIL Off Low Med. High NOTES : Low intensity for night use. High intensity for day use as determined by photocell control. The control of VASI and/or REIL may be independent of other lighting systems. Airport Lighting Aids - -