F/a-18 pilot reports misunderstanding a taxi instruction to cross runways 24R&left at nkx which was ...

Narrative:

After clearing runway 24R after landing; I believed to be cleared to the cala (an area back across both 24L and right). Approaching runway 24R; I switched from ground control to tower and called preparing to cross 24L/right. Understanding I was cleared to cross both runways and without any reply from the tower controller; I began crossing 24R. Tower then advised me to hold short 24L which I did. After crossing 24L; I was told to contact the local ATC number. After reviewing the tapes; it was deemed I had been involved in a runway incursion on 24R. 24R is a runway that is currently unusable for the first 4000 feet and to landing traffic. I attribute the confusion to my unfamiliarity with the airfield and multiple similar call signs taxiing at the same time including one that was opposite direction to me on the same taxiway with similar taxi instructions.

Original NASA ASRS Text

Title: F/A-18 pilot reports misunderstanding a taxi instruction to cross Runways 24R&L at NKX which was not the case. Many similar call signs were in use at the time.

Narrative: After clearing RWY 24R after landing; I believed to be cleared to the CALA (an area back across both 24L and R). Approaching RWY 24R; I switched from ground control to tower and called preparing to cross 24L/R. Understanding I was cleared to cross both runways and without any reply from the tower controller; I began crossing 24R. Tower then advised me to hold short 24L which I did. After crossing 24L; I was told to contact the local ATC number. After reviewing the tapes; it was deemed I had been involved in a runway incursion on 24R. 24R is a runway that is currently unusable for the first 4000 feet and to landing traffic. I attribute the confusion to my unfamiliarity with the airfield and multiple similar call signs taxiing at the same time including one that was opposite direction to me on the same taxiway with similar taxi instructions.

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.

Attributes
ACN	1270350
Time
Date	201506
Local Time Of Day	1201-1800
Place
Locale Reference	NKX.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	F/A 18 Hornet/Super Hornet
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 6000 Flight Crew Type 1800
Events
Anomaly	Deviation - Procedural Clearance Ground Incursion Runway

F/a-18 pilot reports misunderstanding a taxi instruction to cross runways 24R&left at nkx which was not the case. Many similar call signs were in use at the time.