Narrative:

A recent requirement for airports similar to lincoln municipal airport, northeast, requires 1000 ft between all runway ends and roads. During construction work on runway 17L/35R at lnk, the lnk airport authority/authorized was told by the FAA to come into compliance with this requirement which resulted in a relocated threshold of approximately 400 ft at the south end of runway 17L/35R. Concurrent to the re-opening of runway 17L/35R this relocated threshold was marked similar to a taxiway. Although there apparently exists a hold short line which should prevent pilots from entering this area without clearance, the new markings have the pilots confused believing the new hold line is on the relocated threshold. On dec/tue/94 a cessna centurion pilot started to taxi onto the relocated threshold while asking me (local control) if he should taxi up to the hold line on the relocated threshold and then advise he is ready. This pilot had already crossed the hold line which would protect even the threshold. I learned later on dec/xx/94 that similar events have occurred since the new designation and markings took effect. On or about dec/sun/94 (after sunset) a comanche on final to runway 35R was given a go around because another aircraft (cessna 172) had taxied onto the relocated threshold without clearance. I believe the FAA is pursuing the latter occurrence as a runway incursion. It should be noted that at night this relocated threshold is marked by blue taxiway lights. Callback conversation with reporter revealed the following: tower supervisor stated the relocated threshold was coordinated with airport's office of FAA and the proper hold lines and signage are in place. Some pilot confusion exists because of the new threshold.

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Original NASA ASRS Text

Title: RWY INCURSION DUE TO NEW RELOCATED RWY THRESHOLD.

Narrative: A RECENT REQUIREMENT FOR ARPTS SIMILAR TO LINCOLN MUNICIPAL ARPT, NE, REQUIRES 1000 FT BTWN ALL RWY ENDS AND ROADS. DURING CONSTRUCTION WORK ON RWY 17L/35R AT LNK, THE LNK ARPT AUTH WAS TOLD BY THE FAA TO COME INTO COMPLIANCE WITH THIS REQUIREMENT WHICH RESULTED IN A RELOCATED THRESHOLD OF APPROX 400 FT AT THE S END OF RWY 17L/35R. CONCURRENT TO THE RE-OPENING OF RWY 17L/35R THIS RELOCATED THRESHOLD WAS MARKED SIMILAR TO A TXWY. ALTHOUGH THERE APPARENTLY EXISTS A HOLD SHORT LINE WHICH SHOULD PREVENT PLTS FROM ENTERING THIS AREA WITHOUT CLRNC, THE NEW MARKINGS HAVE THE PLTS CONFUSED BELIEVING THE NEW HOLD LINE IS ON THE RELOCATED THRESHOLD. ON DEC/TUE/94 A CESSNA CENTURION PLT STARTED TO TAXI ONTO THE RELOCATED THRESHOLD WHILE ASKING ME (LCL CTL) IF HE SHOULD TAXI UP TO THE HOLD LINE ON THE RELOCATED THRESHOLD AND THEN ADVISE HE IS READY. THIS PLT HAD ALREADY CROSSED THE HOLD LINE WHICH WOULD PROTECT EVEN THE THRESHOLD. I LEARNED LATER ON DEC/XX/94 THAT SIMILAR EVENTS HAVE OCCURRED SINCE THE NEW DESIGNATION AND MARKINGS TOOK EFFECT. ON OR ABOUT DEC/SUN/94 (AFTER SUNSET) A COMANCHE ON FINAL TO RWY 35R WAS GIVEN A GAR BECAUSE ANOTHER ACFT (CESSNA 172) HAD TAXIED ONTO THE RELOCATED THRESHOLD WITHOUT CLRNC. I BELIEVE THE FAA IS PURSUING THE LATTER OCCURRENCE AS A RWY INCURSION. IT SHOULD BE NOTED THAT AT NIGHT THIS RELOCATED THRESHOLD IS MARKED BY BLUE TXWY LIGHTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: TWR SUPVR STATED THE RELOCATED THRESHOLD WAS COORDINATED WITH ARPT'S OFFICE OF FAA AND THE PROPER HOLD LINES AND SIGNAGE ARE IN PLACE. SOME PLT CONFUSION EXISTS BECAUSE OF THE NEW THRESHOLD.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.