On May 30, 2017, FAA updated Order 8400.13D to allow “CAT I approaches with a DH of 200 feet and visibility minimums of RVR 1800 [a reduction from the typical 2400 RVR value] at runways with reduced lighting, using an aircraft flight director (FD) or autopilot (AP) with an approach coupler or head-up display (HUD) to DA.”
This change applies to ILS and RNAV (GPS) approaches with LPV minimums. (GBAS approaches are also included, but those procedures are, at present, rare.)
The policy update was announced in the summer 2017 edition of SatNav News.
Here’s an example of the RVR 1800 minimums on the chart for the ILS or LOC Rwy 20 at KALW (Walla Walla, WA).
This typical category 1 ILS approach has an RVR of 2400 and a DA of 200 ft (1394 MSL).
But as the notes for the procedure explain, the # symbol next to the S-ILS 20 minimums means that RVR 1800 is authorized with use of a flight director (FD) or autopilot (AP) or HUD to the DA.
FAA Order 8400.13D adds the following information about reducing CAT 1 minimums to RVR 1800:
- To be eligible for CAT I approaches to RVR 1800, runways must have or be qualified for a Title 14 of the Code of Federal Regulations (14 CFR) part 97 Standard Instrument Approach Procedure (SIAP).
- Runways must have or be qualified for CAT I DH of 200 feet or less and visibility minimum of not more than 2400 RVR.
- The runway must have a declared landing distance of 5000 feet or greater.
- The runway also must have a simplified short approach lighting system with runway alignment indicator lights (SSALR), medium intensity approach lighting system with runway alignment indicator lights (MALSR), or approach lighting with sequenced flashing lights (ALSF-1/ALSF-2)
- HIRL
- TDZ sensor of an RVR reporting system.
The order adds that:
Any existing part 97 CAT I SIAP which did not qualify for 1800 RVR due to the absence of TDZ or RCL lighting can be amended to include 1800 RVR visibility.
When 1800 RVR operations are authorized, FAA will update the approach chart. If RVR 1800 minimums are authorized before a chart is updated, a NOTAM will be issued which authorizes RVR 1800. CAT I operations to RVR 1800 will be added to existing CAT I SIAPS in accordance with a schedule established by the Regional Airspace and Procedures Team.
The ILS OR LOC/DME RWY 21R at KPSC (Pasco, WA) is another example of RVR 1800 minimums authorized for an ILS.
The S-ILS 21R minimums line includes two asterisks that point to the notes section, which authorizes RVR 1800 with use of a FD, or AP, or HUD to DA.
The RNAV (GPS) Y RWY 21R at KPSC, updated in August 2017, shows the RVR 1800 minimums applied to an RNAV approach with LPV minimums. On this chart, the # note reference appears next to DA.