What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On August 12, 2013, at approximately 1200 mountain daylight time (MDT), frontier airlines flight 283, an Airbus A320-214, N208FR, encountered severe turbulance at the top of descent into Denver international airport, Denver, Colorado (den). One flight attendant sustained serious injuries and two additional flight attendants received minor injuries. The passenger flight was operating under 14 code of federal regulations part 121 domestic rules and originated from st. louis international airport, st. louis, Missouri (stl). The flight was operated under instrument flight rules (IFR) and was in instrument meteorological conditions (IMC) at the time of the accident.
The fasten seat belt signs were illuminated and the captain had advised the flight attendants to be seated. However, the flight attendants continued their service related duties and were not seated at the time the aircraft encountered the turbulence.
As the FAA filed it
ON AUGUST 12, 2013, AT APPROXIMATELY 1200 MOUNTAIN DAYLIGHT TIME (MDT), FRONTIER AIRLINES FLIGHT 283, AN AIRBUS A320-214, N208FR, ENCOUNTERED SEVERE TURBULANCE AT THE TOP OF DESCENT INTO DENVER INTERNATIONAL AIRPORT, DENVER, COLORADO (DEN). ONE FLIGHT ATTENDANT SUSTAINED SERIOUS INJURIES AND TWO ADDITIONAL FLIGHT ATTENDANTS RECEIVED MINOR INJURIES. THE PASSENGER FLIGHT WAS OPERATING UNDER 14 CODE OF FEDERAL REGULATIONS PART 121 DOMESTIC RULES AND ORIGINATED FROM ST. LOUIS INTERNATIONAL AIRPORT, ST. LOUIS, MISSOURI (STL). THE FLIGHT WAS OPERATED UNDER INSTRUMENT FLIGHT RULES (IFR) AND WAS IN INSTRUMENT METEOROLOGICAL CONDITIONS (IMC) AT THE TIME OF THE ACCIDENT.
THE FASTEN SEAT BELT SIGNS WERE ILLUMINATED AND THE CAPTAIN HAD ADVISED THE FLIGHT ATTENDANTS TO BE SEATED. HOWEVER, THE FLIGHT ATTENDANTS CONTINUED THEIR SERVICE RELATED DUTIES AND WERE NOT SEATED AT THE TIME THE AIRCRAFT ENCOUNTERED THE TURBULENCE.