For info. I saw FSXNP's comment about location of gauges
It's a common misconception which needs to be clarified - in FSX neither aircraft nor ships have ILS.
This entity 'exists' only in a gauge, attached to an aircraft. In general, the gauge detects a supported carrier and counts the aircraft's position relative to this carrier, so the gauge then can visualize this position.
A good example is the HUD gauge by Jivko Rusev, which displays ILS bars on the HUD glass. By default the gauge supports only two carriers (Acceleration and Javier CVN68). To distinguish the carriers this gauge uses different NAV1 frequencies. To extend the support I have modified this gauge so it now allows using ILS when landing on CVN65, CV63 and R09.
I don't have the gauge in question, but something tells me it utilizes similar techniques... Wink
I have run a quick test using the FSXBA F-18, Dino Cattaneo's Goshawk and Bear Studios J-15 Naval Flanker.
I flew out to the Nimitz and then the PLAN Liaoning which is supplied by Bear Studios with the J-15. The F-18 and T-45 ILS/TACAN gauge worked with the Nimitz but NOT the Liaoning. However, the J-15 gauge worked with both carriers.
The J-15 is a good plane but badly let down by the translation of the manual from Chinese into English. The original manual was a nightmare to read, the update is now just very difficult. But a good plane with many redeeming features (e.g. built in IFLOLS).