Pilots report runway incursion by B737 flight crew while MU300 was on approach to runway 13R at dal....

Attributes
ACN	836163
Time
Date	200905
Local Time Of Day	1201-1800
Place
Locale Reference	DAL.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	MU-300 Diamond 1/1A
Operating Under FAR Part	Part 135
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 26500 Flight Crew Type 4000
Person 2
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 219 Flight Crew Type 3100
Events
Anomaly	Conflict Ground Conflict Less Severe Ground Incursion Runway

Narrative:

I am reporting what I think is an unsafe condition concerning taxiway markings and signage at the hold short line of runway 13R at dal. The mandatory hold short sign is at a completely different angle than the painted hold short line; making it very probable for a runway incursion to occur. At XA00; we were on final approach to 13R at dal; when a taxiing B737 went past the painted hold short line but was most likely within the angle of the mandatory hold short sign. The signs and the taxiway markings seem to be in total conflict with AC 150-5340-18E figure 5. Airport operations are trying to make 1 angled mandatory hold short sign fit the needs for all of the different angles of the painted hold short line; which I think is a very unsafe situation. Dal airport operations have been notified and they think they are in compliance with the markings and signs. A view of the situation can be seen on google earth; where a picture will better describe the matter on the end of runway 13R. Once again; from a professional pilot's opinion; this situation with the signage and taxiway markings on the end of runway 13R at dal; if left unchanged; will most likely lead to a runway incursion.

Original NASA ASRS Text

Title: Pilots report runway incursion by B737 flight crew while MU300 was on approach to Runway 13R at DAL. The reporters both believe that the hold short sign location is the primary reason that this incursion occurred.

Narrative: I am reporting what I think is an unsafe condition concerning taxiway markings and signage at the hold short line of Runway 13R at DAL. The mandatory hold short sign is at a completely different angle than the painted hold short line; making it very probable for a runway incursion to occur. At XA00; we were on final approach to 13R at DAL; when a taxiing B737 went past the painted hold short line but was most likely within the angle of the mandatory hold short sign. The signs and the taxiway markings seem to be in total conflict with AC 150-5340-18E figure 5. Airport operations are trying to make 1 angled mandatory hold short sign fit the needs for all of the different angles of the painted hold short line; which I think is a very unsafe situation. DAL airport operations have been notified and they think they are in compliance with the markings and signs. A view of the situation can be seen on Google Earth; where a picture will better describe the matter on the end of Runway 13R. Once again; from a professional pilot's opinion; this situation with the signage and taxiway markings on the end of Runway 13R at DAL; if left unchanged; will most likely lead to a runway incursion.

Data retrieved from NASA's ASRS site as of April 2012 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.

Pilots report runway incursion by B737 flight crew while MU300 was on approach to runway 13R at dal. The reporters both believe that the hold short sign location is the primary reason that this incursion occurred.