Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Engineer; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 25; Flight Crew Total 27000; Flight Crew Type 200
Situational Awareness; Confusion
Conflict NMAC; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Airport
I was the pilot not flying in my friends Aircraft X. We were coming from the east and were on a right base for Runway 36 which is blacktop and 75 feet wide. The other two runways at JVL are concrete and 150 feet wide. Aircraft Y I believe was on a left base for Runway 36 approaching from the west. Janesville does not have radar. We were expecting to follow Aircraft Y. The runway number for 36 was faded and hard to see. Runway 36 was hard to see because it is blacktop and half the width of the two concrete runways. The pilot of Aircraft Y apparently did not see Runway 36 and flew east towards Runway 32 which was closed. The Tower Controller had Aircraft Y do a 180 and fly west on a right base for 36. The Aircraft Y pilot did not see Runway 36 on his second pass and flew towards Runway 4. The Aircraft Y pilot was told to do another 180 on to a left base for Runway 36. He did not see Runway 36 a third time and passed about 100 feet under us. We turned final for Runway 36 and the Tower Controller identified us when my friend turned his landing light on. The Aircraft Y landed after we landed. When I called JVL Ground to depart the Controller immediately told me they were going to paint new numbers on Runway 18/36. He also suggested on the ATIS that pilots should have an airport diagram available when flying to JVL because Runway 18/36 is much harder to see than Runways 14/32 or 4/22.
Non-flying instructor pilot reported an NMAC while approaching to land. ATC informed the instructor's aircraft the conflicting aircraft was unable to find the correct runway due to worn-out runway markings.