A B777 captain reported having to take evasive action to avoid an aircraft which entered lemd runway...

Attributes
ACN	1372920
Time
Date	201607
Local Time Of Day	1201-1800
Place
Locale Reference	LEMD.Airport
State Reference	FO
Environment
Light	Daylight
Aircraft 1
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical Deviation - Procedural Clearance

Narrative:

#1 for departure runway 36L taxiway Z1. Tower cleared us to 'line up and wait behind' departing domestic flight rolling on runway. As we began to take the runway tower cleared the next domestic flight on Z3 to 'line up and wait behind' us. Instead of lining up behind us; domestic on Z3 crossed the hold short line; cutting us off as we were entering the runway; causing us to stop abruptly to avoid a collision. With us now unable to reach takeoff position; tower allowed domestic to take off in front of us. I have always felt the clearance 'line up and wait behind' to be a terrible terminology; creating increased likelihood of confusion and conflict. This proved true in this instance.I suggest that these conditional clearances not be used.

Original NASA ASRS Text

Title: A B777 Captain reported having to take evasive action to avoid an aircraft which entered LEMD Runway 36L before his flight which had been cleared to line up and wait.

Narrative: #1 for departure Runway 36L Taxiway Z1. Tower cleared us to 'line up and wait behind' departing domestic flight rolling on runway. As we began to take the runway tower cleared the next domestic flight on Z3 to 'line up and wait behind' us. Instead of lining up behind us; domestic on Z3 crossed the hold short line; cutting us off as we were entering the runway; causing us to stop abruptly to avoid a collision. With us now unable to reach takeoff position; tower allowed domestic to take off in front of us. I have always felt the clearance 'line up and wait behind' to be a terrible terminology; creating increased likelihood of confusion and conflict. This proved true in this instance.I suggest that these conditional clearances not be used.

Data retrieved from NASA's ASRS site 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.

A B777 captain reported having to take evasive action to avoid an aircraft which entered lemd runway 36L before his flight which had been cleared to line up and wait.