What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On February 2nd, 2015 after normal preflight and engine start operations the flight crew received a taxi clearance from dvt-atc. Paraphrasing, taxi to rwy 25L via taxiway a, A13; hold short of rwy 25L. It was the taxi clearance they expected and briefed. As they started to taxi the crew commenced with all taxi checklist items and completed. As the pilots approached the 90 degree turn from taxiway *a* onto taxiway *A13* they discussed the narrow taxiway and the tight 90 degree turn. During the turn, even though they favored the left side of the taxiway, the right main wheels went off the taxiway. They immediatly contacted ground control for assistance.
As the FAA filed it
ON FEBRUARY 2ND, 2015 AFTER NORMAL PREFLIGHT AND ENGINE START OPERATIONS THE FLIGHT CREW RECEIVED A TAXI CLEARANCE FROM DVT-ATC. PARAPHRASING, TAXI TO RWY 25L VIA TAXIWAY A, A13; HOLD SHORT OF RWY 25L. IT WAS THE TAXI CLEARANCE THEY EXPECTED AND BRIEFED. AS THEY STARTED TO TAXI THE CREW COMMENCED WITH ALL TAXI CHECKLIST ITEMS AND COMPLETED. AS THE PILOTS APPROACHED THE 90 DEGREE TURN FROM TAXIWAY *A* ONTO TAXIWAY *A13* THEY DISCUSSED THE NARROW TAXIWAY AND THE TIGHT 90 DEGREE TURN. DURING THE TURN, EVEN THOUGH THEY FAVORED THE LEFT SIDE OF THE TAXIWAY, THE RIGHT MAIN WHEELS WENT OFF THE TAXIWAY. THEY IMMEDIATLY CONTACTED GROUND CONTROL FOR ASSISTANCE.