Citation flight crew reported they had rejected takeoff due to an unusual vibration. They discovered the main landing gear tires were deflated.
Synopsis
Citation flight crew reported they had rejected takeoff due to an unusual vibration. They discovered the main landing gear tires were deflated.
Narrative
Runway XX at ZZZ AIRPORT; departure checklist complete with cleared for takeoff instructions from Tower; Captain was on flying pilot duties and I was on non flying pilot duties.Captain stopped the aircraft with brakes on for a few moments to apply takeoff thrust and I verified that takeoff thrust was set and Captain released brakes and continued to maintain runway centerline and I made required call outs ( TAKEOFF POWER SET--POWERS MET--ENGINE INSTRUMENTS IN THE GREEN--SPEED ALIVE BOTH SIDEs--80 kts--Captain confirmed 80 kts speed)--after approximately 2 seconds or so of 80 kts call out---we heard unusual vibration sound as if the aircraft was rolling on GROOVED SURFACE OR something and the vibration became louder with every second passed ;approximately after 3 to 4 seconds after the sound began and grew louder Captain began to reject the takeoff and I also called OUT 'STOP STOP' indicating to the Captain that takeoff need to be rejected.Captain initiated thrust reversers and began to apply brakes to slow down the aircraft speed which according to my knowledge and experience wasn't hard breaking as the aircraft had decelerated due to application of thrust reversers and I called out to the Tower regarding REJECTED TAKEOFF and we were advised by the Tower to exit appropriate EXIT and found to have been able to exit via a rapid taxiway with positive Tower contact.Tower asked if we needed any assistance at this point Captain mentioned to me that we will have to taxi the aircraft back to the FBO and I made contacts with the Ground frequencies set and with positive contact we were able to taxi back to the FBO.Upon parking at the FBO Captain proceeded to walk out and carry out post flight inspection whereas I was communicating with the passenger and informing him to follow me and exit the aircraft as explained the situation to the passenger regarding aborted takeoff.Passenger understood the reasons for rejected takeoff and followed my instructions and walked out and away from the aircraft.Captain called on me at this point of time and directed me to check on the starboard side main TIRE INBOARD TO HAVE DEFLATED when I observed and after a few minutes I found the second tire had also deflected.Smoke was found to have been emitting NOW AND THEN from the right main landing gear.Captain decided to get in touch with the Tower on the given mobile number and explained the reason for rejecting takeoff.Captain also got in touch with Our company officials and discussed the matter.
Second reporter narrative
We departed the FBO to Runway XX for our departure; normal takeoff; we got cleared for takeoff; entered the runway; stop the airplane; applied power; after power set for takeoff; released the brakes and started our takeoff roll; at first everything looked normal; my First Officer (FO) called 80 kts; to which I replied 'checked'; 3 to 4 seconds later a huge vibration started and it didn't stop until I retarded the throttles; opened the buckets and applied some reverse thrust and then realized a tendency of the airplane to go right; kept the airplane on the centerline; looking ahead the next taxiway was still 'far' ahead so there was no need to apply max braking; FO called the Tower telling them 'Aircraft X aborted takeoff'; we were asked if we needed assistance; to which we said no; then we received instructions to exit the runway on the next available taxiway; which we did; after stopping the airplane and checked everything seemed fine we continue taxi back to the FBO; after stopping and parking; stepping out of the airplane; everything looked normal; 10 seconds later no. 3 tire started looking low and 5 mins later no.4 tire also.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.