Air carrier flight crew reported runway condition was incorrectly reported and resulted in landing with poor to nil braking with loss of aircraft control.
Synopsis
Air carrier flight crew reported runway condition was incorrectly reported and resulted in landing with poor to nil braking with loss of aircraft control.
Narrative
Aircraft X departed ZZZ enroute to FNT at XA:30. During the enroute phase of the flight; both Captain (CA) and First Officer (FO) continuously monitored the weather and runway conditions at FNT. The reported conditions at the field were better than 6000 rvr and OVC at 700 ft. with braking action reported as 5/5/5 for Runway 09. The FO contacted Tower on the second radio early in order to obtain any PIREPs or actual field conditions. Tower reported the conditions as advertised. We elected to use Flaps 45 as a safety precaution and briefed full reverser use on touchdown. Runway 09 ILS was in use and the approach went smoothly. As we broke out at approximately 300 ft. AGL and executed a normal landing. I immediately recognized braking action was poor and not as advertised as we touched down. I initiated full reversers and did not actuate steering tiller as I knew it would possibly cause the aircraft to spin or slide. I could feel the aircraft sliding straight down the center of the runway. I kept full reversers engaged until I felt the aircraft was safely slow enough to brake harder. The aircraft still slid about 50 yards or more. The aircraft came to a full stop with less than 1/3 runway remaining. I set the parking brake and immediately requested a tow. FNT does not have the capability to tow; so the snow clearing vehicles came out and proceeded to clear runway and taxiway in front of us and we were then authorized to taxi after Tower; the plow vehicles and myself all concurred that it was safe to do so. We arrived safely at the gate with no further problems.Weather conditions were not as reported and advertised by FNT tower. Continue to request PIREPS and even more updated field conditions.
Second reporter narrative
Today; upon landing in Flint; Michigan; the stated braking action reported values were much higher than in reality. The Captain and I thoroughly looked at the weather in ZZZ before departing as there was forecasted snow; low visibilities and ceilings forecasted. We departed ZZZ without incident. During flight; we began to get updated weather information for Flint and discussing our upcoming approach and landing. We determined from earlier briefings that flaps 45 would be the best option for the weather in Flint. The weather I printed off and listened to over the radio was saying 1/2SM visibility; 3500V5000 and overcast 700 ft; and 5;5;5 values for Runway 9. On the ATIS; they described this and also said that there had been another aircraft; I think it was an Aircraft X; which had come in and reported good to moderate braking action. I called up Tower about 50 miles out to ask about current field conditions and they corroborated what was on the current weather information and said that the visibility was 1/2 and 3500V5500 and that the braking action was 5;5;5. We descended and were configured at the outer marker to be as stable and precise as we could be for this approach. We commenced the approach and Tower was reporting over 6000 on the RVR. We came down to land; had the environment in sight roughly 150 ft. above minimums and continued in to land. The runway was a faint white color and had snow on it. The Captain landed the aircraft in a very stable manner in a controlled landing getting it onto the runway at a slow airspeed to maximize braking effectiveness. We touched down; they applied brakes and reverse thrust and then maximum reversers. The Captain maintained centerline very well. I offered to assist to hold the elevator full forward since they were on the reversers and brakes. The Captain stated that the runway was much less than 5;5;5's and that braking action was more towards poor to nil. They finally were able to stop the aircraft in over 4000 ft. of runway abeam to taxiway Alpha a fair amount more than the application had stated. They told Tower that they were not going to taxi further as this was a safety issue that could lead to an excursion since it was so slippery so we stopped on the runway and waited for operations. Tower sent out the trucks to work on getting the runway to a level where we could safely taxi to the terminal. As they were cleaning it; it was almost immediately covered again with the rates of snowfall. Eventually they heavily sanded the runway and taxiways to the ramp and we taxied very slowly to the ramp uneventfully. Tower ended up closing the runway after we landed for quite a while to try to get it treated.Due to heavy snowfall; the braking action reports were not up to date with current conditions. Having more accurate braking reports would be greatly beneficial when there hasn't been an air carrier coming in to land in awhile.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.