Narrative:

Normal visual approach to landing. On touchdown all seemed normal for a second or 2. Then aircraft started going left and soon it became obvious captain did not have full control of aircraft. As we started going off left side of runway, I called 'right brake, right brake!' he says ' I am, I am.' slid off to runway shoulder hitting some taxi and runway lights. When came to stop on shoulder, informed tower we had a problem and were shutting down. Did so because of engine vibration. As I secured aircraft, talked to tower and stayed with passenger, captain exited aircraft to view problem. He came back and stated left main gear tire was flat. Later, we noticed damage to both propellers -- probably from striking runway lights. Airport management at scene wanted immediate removal of aircraft so we cleared this through company and aircraft was towed away with dolly. Pictures were taken prior to movement. Tire damage was minimal -- did not appear to be a blowout. May have simply become partially deflated in flight due to puncture on takeoff and then couldn't hold weight of aircraft. Appeared. Okay on preflight and aircraft had maintenance check a few hours before. Additionally, landing was smooth. As a side note, we were off side of runway for approximately 45 to 60 mins with essential bus on to power communication radio to tower. This also would have the cockpit voice recorder pwred. This being the case, anything significant to incident would have been recorded over. Cockpit voice recorders are new to our aircraft and checklists and procedures do not reflect the need to pull cockpit voice recorder circuit breaker. I thought of this at the time, but did not want it to appear as if I was tampering with the cockpit voice recorder by pulling circuit breaker. Later, after aircraft was towed to a hangar, company maintenance department instructed us to pull cockpit voice recorder circuit breaker, probably too late.

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Original NASA ASRS Text

Title: FLAT TIRE DURING LNDG PROC CREATES A LOSS OF ACFT CTL AND SUBSEQUENT RWY EXCURSION.

Narrative: NORMAL VISUAL APCH TO LNDG. ON TOUCHDOWN ALL SEEMED NORMAL FOR A SECOND OR 2. THEN ACFT STARTED GOING L AND SOON IT BECAME OBVIOUS CAPT DID NOT HAVE FULL CTL OF ACFT. AS WE STARTED GOING OFF L SIDE OF RWY, I CALLED 'R BRAKE, R BRAKE!' HE SAYS ' I AM, I AM.' SLID OFF TO RWY SHOULDER HITTING SOME TAXI AND RWY LIGHTS. WHEN CAME TO STOP ON SHOULDER, INFORMED TWR WE HAD A PROBLEM AND WERE SHUTTING DOWN. DID SO BECAUSE OF ENG VIBRATION. AS I SECURED ACFT, TALKED TO TWR AND STAYED WITH PAX, CAPT EXITED ACFT TO VIEW PROBLEM. HE CAME BACK AND STATED L MAIN GEAR TIRE WAS FLAT. LATER, WE NOTICED DAMAGE TO BOTH PROPS -- PROBABLY FROM STRIKING RWY LIGHTS. ARPT MGMNT AT SCENE WANTED IMMEDIATE REMOVAL OF ACFT SO WE CLRED THIS THROUGH COMPANY AND ACFT WAS TOWED AWAY WITH DOLLY. PICTURES WERE TAKEN PRIOR TO MOVEMENT. TIRE DAMAGE WAS MINIMAL -- DID NOT APPEAR TO BE A BLOWOUT. MAY HAVE SIMPLY BECOME PARTIALLY DEFLATED IN FLT DUE TO PUNCTURE ON TKOF AND THEN COULDN'T HOLD WT OF ACFT. APPEARED. OKAY ON PREFLT AND ACFT HAD MAINT CHK A FEW HRS BEFORE. ADDITIONALLY, LNDG WAS SMOOTH. AS A SIDE NOTE, WE WERE OFF SIDE OF RWY FOR APPROX 45 TO 60 MINS WITH ESSENTIAL BUS ON TO PWR COM RADIO TO TWR. THIS ALSO WOULD HAVE THE COCKPIT VOICE RECORDER PWRED. THIS BEING THE CASE, ANYTHING SIGNIFICANT TO INCIDENT WOULD HAVE BEEN RECORDED OVER. COCKPIT VOICE RECORDERS ARE NEW TO OUR ACFT AND CHKLISTS AND PROCS DO NOT REFLECT THE NEED TO PULL COCKPIT VOICE RECORDER CIRCUIT BREAKER. I THOUGHT OF THIS AT THE TIME, BUT DID NOT WANT IT TO APPEAR AS IF I WAS TAMPERING WITH THE COCKPIT VOICE RECORDER BY PULLING CIRCUIT BREAKER. LATER, AFTER ACFT WAS TOWED TO A HANGAR, COMPANY MAINT DEPT INSTRUCTED US TO PULL COCKPIT VOICE RECORDER CIRCUIT BREAKER, PROBABLY TOO LATE.

Data retrieved from NASA's ASRS site as of July 2007 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.