What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On may 5, 2020 at approx. 1033 hours local, N22ST departed the end of runway 36 at 3J1 airport. After an apparently uneventful approach, N22ST touched down and appeared to fail to deploy spoilers, thus greatly reducing breaking effectivity. The aircraft departed the end of the runway, coming to rest in a swampy area approx. 400 feet past the end of the runway. No injuries were sustained during the runway excursion. Damage to ac was substantial according to Gulfstream representatives who were on location. Right main gear and nose gear ripped off, with flap damage, leading edge and slat damage, nose cone damage, and a flooded avionics bay.
Gulfstream subsequently did a systems analysis and found a potential though unlikely problem with the ground airbrake switch system that could possibly contribute to decreased runway performance: "based on this information we cannot conclusively confirm if the switch resistance was high during the event or a manifestation post incident" based on this, it cannot conclusively be stated that pilot error was a factor.
As the FAA filed it
ON MAY 5, 2020 AT APPROX. 1033 HOURS LOCAL, N22ST DEPARTED THE END OF RUNWAY 36 AT 3J1 AIRPORT. AFTER AN APPARENTLY UNEVENTFUL APPROACH, N22ST TOUCHED DOWN AND APPEARED TO FAIL TO DEPLOY SPOILERS, THUS GREATLY REDUCING BREAKING EFFECTIVITY. THE AIRCRAFT DEPARTED THE END OF THE RUNWAY, COMING TO REST IN A SWAMPY AREA APPROX. 400 FEET PAST THE END OF THE RUNWAY. NO INJURIES WERE SUSTAINED DURING THE RUNWAY EXCURSION. DAMAGE TO AC WAS SUBSTANTIAL ACCORDING TO GULFSTREAM REPRESENTATIVES WHO WERE ON LOCATION. RIGHT MAIN GEAR AND NOSE GEAR RIPPED OFF, WITH FLAP DAMAGE, LEADING EDGE AND SLAT DAMAGE, NOSE CONE DAMAGE, AND A FLOODED AVIONICS BAY.
GULFSTREAM SUBSEQUENTLY DID A SYSTEMS ANALYSIS AND FOUND A POTENTIAL THOUGH UNLIKELY PROBLEM WITH THE GROUND AIRBRAKE SWITCH SYSTEM THAT COULD POSSIBLY CONTRIBUTE TO DECREASED RUNWAY PERFORMANCE: "BASED ON THIS INFORMATION WE CANNOT CONCLUSIVELY CONFIRM IF THE SWITCH RESISTANCE WAS HIGH DURING THE EVENT OR A MANIFESTATION POST INCIDENT" BASED ON THIS, IT CANNOT CONCLUSIVELY BE STATED THAT PILOT ERROR WAS A FACTOR.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.