What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(.4)The DC-9 departed and climbed to flight level 290. About 1 hour and 35 minutes after departure, the airplane was cleared by ATC to 17,000 feet MSL. Upon receiving the clearance, the captain initiated approximately a 3,500 foot per minute descent, and slowed to 280 knots. While in the descent and passing flight level 235, the airplane encountered the wake turbulence of a cargo Boeing 747, which was 12 nautical miles ahead and also descending to 17,000 feet MSL. The captain of the DC-9 pitched the airplane's nose up to exit the wake turbulence, and requested additional separation between the two airplanes from ATC. During the wake turbulence encounter, a flight attendant in the galley slipped, and seriously injured her right ankle.
As the FAA filed it
(.4)THE DC-9 DEPARTED AND CLIMBED TO FLIGHT LEVEL 290. ABOUT 1 HOUR AND 35 MINUTES AFTER DEPARTURE, THE AIRPLANE WAS CLEARED BY ATC TO 17,000 FEET MSL. UPON RECEIVING THE CLEARANCE, THE CAPTAIN INITIATED APPROXIMATELY A 3,500 FOOT PER MINUTE DESCENT, AND SLOWED TO 280 KNOTS. WHILE IN THE DESCENT AND PASSING FLIGHT LEVEL 235, THE AIRPLANE ENCOUNTERED THE WAKE TURBULENCE OF A CARGO BOEING 747, WHICH WAS 12 NAUTICAL MILES AHEAD AND ALSO DESCENDING TO 17,000 FEET MSL. THE CAPTAIN OF THE DC-9 PITCHED THE AIRPLANE'S NOSE UP TO EXIT THE WAKE TURBULENCE, AND REQUESTED ADDITIONAL SEPARATION BETWEEN THE TWO AIRPLANES FROM ATC. DURING THE WAKE TURBULENCE ENCOUNTER, A FLIGHT ATTENDANT IN THE GALLEY SLIPPED, AND SERIOUSLY INJURED HER RIGHT ANKLE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.