PLT OF A C172 AIR TAXI CARGO FLT STOPPED PAST THE RWY HOLD LINE DURING TAXI OUT BECAUSE OF DISTR FROM ANOTHER LNDG ACFT. GND CTLR ISSUED THE RPTR AN ALERT.

Narrative

I WAS ACTING AS PIC OF A NIGHT; VFR PART 135 CARGO FLT DEPARTING LEBANON; NH (LEB); FOR A FLT TO NORTHAMPTON; MA (7B2). AFTER LOADING THE CARGO ON BOARD THE ACFT; I TUNED IN TO THE ATIS FREQ AND; SINCE WINDS WERE LIGHT; RWY 18 WAS ACTIVE FOR DEPS WHILE RWY 25 WAS BEING USED FOR ARRS. CALLING LEB GND; I RECEIVED TAXI CLRNC TO 'TAXI TO RWY 18.' KNOWING THAT RWY 18 WAS ONLY A SHORT TAXI FROM THE FBO; I MADE A L TURN ON THE TXWY B AND NOTICED THE SIGN SIGNIFYING THAT I WAS APCHING RWY 18. I BEGAN SLOWING DOWN IN ANTICIPATION OF HOLDING SHORT. AN ACFT LNDG ON RWY 25 DISTR ME AND I PUT MY EYES INSIDE THE COCKPIT MOMENTARILY TO TURN OFF MY LNDG AND TAXI LIGHTS; SO AS NOT TO DISTRACT THE PLT OF THE ACFT ON FINAL APCH TO RWY 25. BY THE TIME I LOOKED UP; I REALIZED THAT I HAD TAXIED PAST THE HOLD SHORT LINES; BUT STILL WELL CLR OF RWY 18; SINCE THE HOLD LINES ARE APPROX 75 FT FROM THE RWY SHOULDER. REALIZING MY MISTAKE; I STOPPED IMMEDIATELY. THIS WAS ACCOMPANIED BY A MESSAGE FROM THE GND CTLR NOT TO TAXI ANY FURTHER PAST THE HOLD LINES. GOING TO TWR FREQ; I RECEIVED MY TKOF CLRNC ON RWY 18 AND THE REMAINDER OF THE FLT WAS WITHOUT INCIDENT. FATIGUE MIGHT HAVE BEEN A FACTOR IN THIS SIT AS WELL AS THE DISTR CAUSED BY THE OTHER ACFT. RECESSED LIGHTING ON THE HOLD SHORT LINES MAY HAVE PREVENTED THE INCIDENT.