Gulfstream flight crew reported hydroplaning during their landing rollout which led to a runway over...

Attributes
ACN	1434457
Time
Date	201703
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Gulfstream IV / G350 / G450
Operating Under FAR Part	Part 135
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 10100 Flight Crew Type 2000
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 90 Flight Crew Total 5500 Flight Crew Type 125
Events
Anomaly	Ground Excursion Runway Inflight Event / Encounter Weather / Turbulence

Narrative:

During landing an over-run occurred. The weather reported winds of 190 at 8 knots; with variable direction. We were stabilized before the final approach fix. Upon landing the wind switched to a right crosswind (less than 10 knots). I applied max thrust reverse and moderate braking. Because of unforeseen standing water the anti-skid was activated and minimal braking was possible and we also encountered hydroplaning. We exited the end of the runway into a dirt clearway at a very low speed; approximately 5-10 knots. Hard compact dirt allowed me to stop the aircraft within about 10-20 feet. No damage occurred. The aircraft was towed back onto the taxiway.

Original NASA ASRS Text

Title: Gulfstream flight crew reported hydroplaning during their landing rollout which led to a runway overrun.

Narrative: During landing an over-run occurred. The weather reported winds of 190 at 8 knots; with variable direction. We were stabilized before the final approach fix. Upon landing the wind switched to a right crosswind (less than 10 knots). I applied max thrust reverse and moderate braking. Because of unforeseen standing water the anti-skid was activated and minimal braking was possible and we also encountered hydroplaning. We exited the end of the runway into a dirt clearway at a very low speed; approximately 5-10 knots. Hard compact dirt allowed me to stop the aircraft within about 10-20 feet. No damage occurred. The aircraft was towed back onto the taxiway.

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.