Date: 201306
Local time of day: 0601-1200
Location: LAX.Airport, CA
Flight conditions: VMC
Light: Daylight
Aircraft: Commercial Fixed Wing
Operator: Air Carrier
Operating under: Part 121
Mission: Passenger
Flight phase: Takeoff / Launch
Airspace: Class B LAX
ATC / advisory: Tower LAX
Second aircraft: Commercial Fixed Wing
Reporter organization: Air Carrier
Reporter function: Pilot Flying; First Officer
Human factors: Communication Breakdown; Situational Awareness; Time Pressure
Second reporter function: Captain; Pilot Not Flying
Anomaly: Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Took Evasive Action
Contributing factors: Procedure; Human Factors
Primary problem: Ambiguous

Narrative: As we took Runway 24L; both pilots commented on the large aircraft and its landing on 24R. We were cleared to takeoff on heading 230. Takeoff procedures were normal through 80 KTS. Approaching coincidental V1 and rotate speeds; both pilots noted the other aircraft did not appear to be holding short of 24R as instructed. It did indeed begin to cross our takeoff runway without slowing. As pilot flying; I rotated normally until the tail was clear of the runway and then aggressively rotated further while adding additional power eliminating the reduced thrust takeoff. The Captain called out; 'Get it up; keep it climbing; and let's get outta here.' It was my opinion that we flew directly over the other aircraft as I could see the tail section of his aircraft while looking down. Tower immediately called for the following aircraft to cancel his takeoff clearance on 24R; issued some instruction to the other aircraft; and eventually sent us to Departure.


Second narrative: During takeoff roll; we heard LAX Tower direct the carrier to hold short of 24L but did not hear a response. As I called; 'V1 rotate;' I watched the other aircraft clear Runway 24R onto Taxiway AA at a rate that I felt he was not going to hold short of our runway. I directed the First Officer to increase his rotation rate into an aggressive rate of climb and increase power. I note that the other aircraft had crossed the hold short line and was crossing 24L as we lifted off and climbed aggressively. I then heard LAX Tower cancel the takeoff clearance of the aircraft cleared for takeoff after our clearance. While I could not see the other aircraft from my side of the aircraft; the First Officer did see that we were crossing over him. As a crew our actions were in accordance with procedure to ensure the safety of our aircraft and passengers. ATC may have been over taxed and missed the other carrier's response/non-response to Tower's instructions. The other carrier apparently thought they were cleared to cross 24L. However; they did not clear Runway 24L prior to crossing the hold short line as they most certainly would have seen our takeoff configurations lighting. Increased situational awareness and radio monitoring on the part of this carrier might have prevented the incident. After landing; I am always aware of Tower's instructions and aware of any takeoff clearances on runways that I need to cross. I also clear every runway before I cross it.


Synopsis: An aircraft departed LAX Runway 24L and passed directly over another aircraft which; contrary to ATC's instructions; did not hold short after landing on Runway 24R.