Contact approach
A Contact Approach is an approach available to aircraft operating on an IFR flight plan, where the pilot may deviate from the published instrument approach procedure (IAP) and proceed to the destination airport by visual reference to the surface.
Only pilots may initiate a request for this type of approach, as regulations prohibit air traffic control (ATC) from asking pilots to perform them. A contact approach will only be issued if the aircraft is operating clear of clouds with at least 1-mile of flight visibility, with a reasonable expectation of continuing to the destination airport under those conditions. Additionally, the reported ground visibility at the destination airport must be at least 1 statute mile.