What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The acft departed taxiway charlie at delta while taxiing for departure on rwy 14. The acft struck 2 twy lights and damaged both props.
The PIC rptd he had inadvertently let the rt MLG tire get off the rt edge of the twy onto soft rain-soaked grass which caused the acft to veer completely off the taxiway. The acft then collided with taxiway lights as the PIC attempted to steer the acft back onto the rwy. The PIC noted that rainwater was puddled along the edge of the taxiway, making it difficult to see where the edge was located.
Photos of the scene taken by arpt personnel shortly after the mishap revealed some small rain puddles remaining on the taxiway in spots but none were obscuring the taxiway edge. The taxiway centerline was clearly marked and visible.
An FAA arpt district office ASI reviewed the scene photos and twy condition and stated that the taxiway meets FAA marking standards. The water 'ponding' (puddles) on the taxiway at the time was not considered excessive.
As the FAA filed it
THE ACFT DEPARTED TAXIWAY CHARLIE AT DELTA WHILE TAXIING FOR DEPARTURE ON RWY 14. THE ACFT STRUCK 2 TWY LIGHTS AND DAMAGED BOTH PROPS.
THE PIC RPTD HE HAD INADVERTENTLY LET THE RT MLG TIRE GET OFF THE RT EDGE OF THE TWY ONTO SOFT RAIN-SOAKED GRASS WHICH CAUSED THE ACFT TO VEER COMPLETELY OFF THE TAXIWAY. THE ACFT THEN COLLIDED WITH TAXIWAY LIGHTS AS THE PIC ATTEMPTED TO STEER THE ACFT BACK ONTO THE RWY. THE PIC NOTED THAT RAINWATER WAS PUDDLED ALONG THE EDGE OF THE TAXIWAY, MAKING IT DIFFICULT TO SEE WHERE THE EDGE WAS LOCATED.
PHOTOS OF THE SCENE TAKEN BY ARPT PERSONNEL SHORTLY AFTER THE MISHAP REVEALED SOME SMALL RAIN PUDDLES REMAINING ON THE TAXIWAY IN SPOTS BUT NONE WERE OBSCURING THE TAXIWAY EDGE. THE TAXIWAY CENTERLINE WAS CLEARLY MARKED AND VISIBLE.
AN FAA ARPT DISTRICT OFFICE ASI REVIEWED THE SCENE PHOTOS AND TWY CONDITION AND STATED THAT THE TAXIWAY MEETS FAA MARKING STANDARDS. THE WATER 'PONDING' (PUDDLES) ON THE TAXIWAY AT THE TIME WAS NOT CONSIDERED EXCESSIVE.