NOTE 1: If TDZ and/or centerline (CL) lighting is installed but inoperative, see NOTE 2.
NOTE 2: These minima apply without TDZ and CL lighting when operated by a properly qualified flightcrew, using a flight director (FD), autopilot(AP) with an approach coupler, or head-up display (HUD), at authorized airports and runways as described in subparagraph c. below.

U.S. Department of Transportation
Federal Aviation Operations Specifications Administration
c. Reduced Landing Minima. The certificate holder is authorized precision CAT I landing minima as low as 1800 RVR to approved runways without TDZ lights and/or CL lights, including runways with installed but inoperative TDZ lights and/or CL lights.  Reduced CAT I landing minima are authorized in accordance with the following requirements:
(1)
The authorized airplane(s) must be equipped with an approved FD, AP with an approach coupler, or HUD which provides guidance to Decision Altitude (DA).  The flightcrew must be required to engage the FD, AP with an approach coupler, or HUD as applicable and use it to DA or initiation of missed approach unless adequate visual references with the runway environment are established which allow safe continuation to a landing.  Single pilot operators are prohibited from using the FD to reduced CAT I landing minima without accompanying use of an AP or HUD.

(2)
Should the FD, AP approach coupler, or HUD malfunction or be disengaged during the approach, the flightcrew must execute a missed approach unless visual reference to the runway environment has been established.