Narrative:

While completing an instrument approach in moderate rain the aircraft was configured and stabilized for landing at the final approach fix. The rain encountered during the approach ceased at 600 feet AGL; the runway was identified; and the remaining final approach segment continued in VFR conditions with the aircraft clear of the rain. The runway; having previously been under the rain band we experienced on the approach; appeared wet; reflective; and shiny but without ponding/puddling on the surface. Upon touchdown; which occurred at the 1;000 foot markers; the spoilers were deployed and the reverse thrust sequence was initiated. At the point of increasing reverse thrust from its idle state; the nose of the aircraft began to pivot away from the centerline and the aircraft entered a state of hydroplaning on the surface of the runway. At that point; I decreased the amount of reverse thrust; increased brake pressure and corrected the axis of the aircraft to align with the runway using the rudder pedals.as the nose regained an alignment track with the runway; I again attempted to increase reverse thrust to slow the aircraft. Again; a hydroplaning effect was encountered and directional control became more difficult. I further increased the amount of brake pressure applied as directional control was regained; and finally the aircraft slowed to an acceptable speed and rate of deceleration. Upon stowage of the thrust reversers at 60 knots indicated; the aircraft decelerated without any brake input from me. At a speed lower than 40 knots a pronounced rumble and roughness was felt in the airframe. I continued to let the aircraft come to a stop without brake application thinking a tire issue had developed.as the aircraft stopped on the centerline of the runway; I attempted one thrust application in the attempt to move the aircraft from the runway surface. The aircraft would not move; and at that time I elected to shut the engines down and visually inspect the aircraft from the exterior. Upon exiting the aircraft I found both main gear tires fully deflated. Upon examination; both tires had flat spots and wear holes located on the treads of each tire. The brakes were cool and no smoke or heat emanated from the brakes or from the wheels/tires. There was no damage to the aircraft or the surface of the runway. The aircraft remained on the runway until a tug arrived and was able to tow the aircraft clear.upon reflection; the application of brakes in increasing proportion as the reverse thrust applications generated yawing moments resulted in locking the tires into a no rotation state; that once the film of water from the hydroplaning state was eliminated instantly turned into a locked wheel condition. The rubber from the tires that was in contact with the pavement was worn completely through until a hole developed allowing the nitrogen contained to escape. After the aircraft was towed clear the wheels and tires were removed. The wheels sent to be inspected and the tires replaced with new [ones].

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Original NASA ASRS Text

Title: Cessna Citation I (C500) Captain reported both main gear tires deflated when they locked during landing roll on a wet runway in hydroplaning conditions.

Narrative: While completing an instrument approach in moderate rain the aircraft was configured and stabilized for landing at the final approach fix. The rain encountered during the approach ceased at 600 feet AGL; the runway was identified; and the remaining final approach segment continued in VFR conditions with the aircraft clear of the rain. The runway; having previously been under the rain band we experienced on the approach; appeared wet; reflective; and shiny but without ponding/puddling on the surface. Upon touchdown; which occurred at the 1;000 foot markers; the spoilers were deployed and the reverse thrust sequence was initiated. At the point of increasing reverse thrust from its idle state; the nose of the aircraft began to pivot away from the centerline and the aircraft entered a state of hydroplaning on the surface of the runway. At that point; I decreased the amount of reverse thrust; increased brake pressure and corrected the axis of the aircraft to align with the runway using the rudder pedals.As the nose regained an alignment track with the runway; I again attempted to increase reverse thrust to slow the aircraft. Again; a hydroplaning effect was encountered and directional control became more difficult. I further increased the amount of brake pressure applied as directional control was regained; and finally the aircraft slowed to an acceptable speed and rate of deceleration. Upon stowage of the thrust reversers at 60 knots indicated; the aircraft decelerated without any brake input from me. At a speed lower than 40 knots a pronounced rumble and roughness was felt in the airframe. I continued to let the aircraft come to a stop without brake application thinking a tire issue had developed.As the aircraft stopped on the centerline of the runway; I attempted one thrust application in the attempt to move the aircraft from the runway surface. The aircraft would not move; and at that time I elected to shut the engines down and visually inspect the aircraft from the exterior. Upon exiting the aircraft I found both main gear tires fully deflated. Upon examination; both tires had flat spots and wear holes located on the treads of each tire. The brakes were cool and no smoke or heat emanated from the brakes or from the wheels/tires. There was no damage to the aircraft or the surface of the runway. The aircraft remained on the runway until a tug arrived and was able to tow the aircraft clear.Upon reflection; the application of brakes in increasing proportion as the reverse thrust applications generated yawing moments resulted in locking the tires into a no rotation state; that once the film of water from the hydroplaning state was eliminated instantly turned into a locked wheel condition. The rubber from the tires that was in contact with the pavement was worn completely through until a hole developed allowing the nitrogen contained to escape. After the aircraft was towed clear the wheels and tires were removed. The wheels sent to be inspected and the tires replaced with new [ones].

Data retrieved from NASA's ASRS site 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.