Final answer:
When flying an ILS approach with 1800 RVR and no TDZ or RCL lights, the pilot must rely on the ILS equipment for guidance. The glide slope and localizer indicators are critical for maintaining the correct descent path and alignment with the runway centerline.
Step-by-step explanation:
When flying an ILS approach with a report of 1800 RVR (Runway Visual Range) and the runway does not have operative TDZ (Touchdown Zone) lights or RCL (Runway Centerline) lights, the pilot must rely solely on the ILS equipment for guidance and landing. The ILS (Instrument Landing System) provides lateral and vertical guidance to the runway, assisting the pilot in landing in low visibility conditions.
Without TDZ lights, the pilot must rely on the glide slope indicator to ensure a correct descent path. The glide slope indicates the aircraft's vertical position relative to the optimal descent path. Without RCL lights, the pilot must rely on the ILS localizer for lateral guidance and maintaining alignment with the runway centerline.
It is crucial for the pilot to monitor the ILS indications carefully and follow the prescribed procedures to ensure a safe landing in low visibility conditions.