Date: 201511
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Flight conditions: IMC
Weather elements / visibility: Snow; Windshear; Icing
Light: Dawn
Aircraft: Medium Large Transport; Low Wing; 2 Turbojet Eng
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Landing
Airspace: Class D ZZZ
ATC / advisory: Tower ZZZ
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Human factors: Workload; Situational Awareness; Troubleshooting
Second reporter function: First Officer; Pilot Not Flying
Anomaly: Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Loss Of Aircraft Control
Detector: Person Flight Crew
When detected: Taxi
Result: Flight Crew Regained Aircraft Control; General Flight Cancelled / Delayed
Contributing factors: Weather; Procedure; Human Factors; Airport
Primary problem: Airport

Narrative: Prior to departing; crew was briefed by Flight Following on destination runway conditions.  Flight Following passed along a report from airport state maintenance that BOW MU readings for runway 19R were 65/67/65.  There was a runway condition NOTAM: !ZZZ  11/341 ZZZ RWY 1L/19R FICON PATCHY THIN SLUSH DEICED LIQUID 100FT WIDE REMAINDER ICE OBSERVED. Descending into the airport; crew received information November: Wind 150@25G34 Vis 5SM -SN/BR FEW007 OVC012 1/1 A2909.  We were cleared for approach ILS 19R from center; then handed off to tower.  We requested latest runway conditions from tower and were told a B-737 reported braking action 'Good' less than 1 hour ago.  We continued the approach stabilized and landed on the centerline within the touchdown zone.  When brakes were applied; braking action was found to be less than reported.  Once reaching a slower speed; the aircraft weathervaned to the left; continuing down the centerline.  Coming to a stop; the airplane slid forward under no sideload force towards the edge of the runway.  Assessing the situation; the crew determined there was no damage to the aircraft and that we could safely taxi back to the center of the runway; made a 180 degree turn for a back taxi; and exited the runway.  The crew reported braking action 'Poor' to tower and requested that taxi route on taxiways and ramp be inspected by state maintenance crew.  We determined we could safely taxi to our parking on the ramp.  We reported to tower that we had come close to the edge of the runway and they should send someone to inspect it.  Tower relayed to us that state personnel inspected and found everything to be fine.  State personnel also reported that when checking braking action on the runway; 'Poor' was actually giving credit to current conditions.  After exiting the aircraft; the crew inspected the tires; landing gear; engines; and found no scuffing; markings; or irregularities.  Everything appeared to be normal.  Giving more accurate and updated braking reports.


Second narrative: [Report narrative contained no additional information.]


Synopsis: A DC-9 landed on a snowy runway previously reported with 'GOOD' braking by an air carrier crew but discovered 'POOR' braking. The aircraft skidded with no side load toward the runway edge and was taxied to the gate with no apparent damage.