Narrative:

Upon intercepting ILS runway 27L from a radar vector at 4000 ft MSL/210 KTS assigned, aircraft went into an abrupt 40 degree left bank. Wings were leveled and landing uneventful on runway 27L at ord. In front of us was a B727 3-4 mi. After block-in at gate, informed that one of our flight attendants in the rear fell to her knees during the encounter. (The landing announcement had been made previous to this.) she was likely performing her landing checks in the cabin. She complained of pain in her knees but walked to cockpit. I have no further information on her condition. Callback conversation with reporter revealed the following information: reporter participated in the wake turbulence callback study. Reporter reported the wake to be of short duration. He felt the PF could handle the 40 degree roll caused by the wake. He didn't even try to take control of the aircraft at the time. Wake rolled the aircraft but not much else happened. A flight attendant was standing performing prelndg check in the cabin, she was knocked down. The flight attendant was able to walk off the aircraft at destination. No further word as to how severe her injuries were.

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Original NASA ASRS Text

Title: AN A320 APCHING ORD, IL, ENCOUNTERS WAKE TURB ON THE ILS RWY 27L APCH COURSE. ACFT ROLLS 40 DEGS L BUT REGAINS FULL CTL. A FLT ATTENDANT IS INJURED.

Narrative: UPON INTERCEPTING ILS RWY 27L FROM A RADAR VECTOR AT 4000 FT MSL/210 KTS ASSIGNED, ACFT WENT INTO AN ABRUPT 40 DEG L BANK. WINGS WERE LEVELED AND LNDG UNEVENTFUL ON RWY 27L AT ORD. IN FRONT OF US WAS A B727 3-4 MI. AFTER BLOCK-IN AT GATE, INFORMED THAT ONE OF OUR FLT ATTENDANTS IN THE REAR FELL TO HER KNEES DURING THE ENCOUNTER. (THE LNDG ANNOUNCEMENT HAD BEEN MADE PREVIOUS TO THIS.) SHE WAS LIKELY PERFORMING HER LNDG CHKS IN THE CABIN. SHE COMPLAINED OF PAIN IN HER KNEES BUT WALKED TO COCKPIT. I HAVE NO FURTHER INFO ON HER CONDITION. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN THE WAKE TURB CALLBACK STUDY. RPTR RPTED THE WAKE TO BE OF SHORT DURATION. HE FELT THE PF COULD HANDLE THE 40 DEG ROLL CAUSED BY THE WAKE. HE DIDN'T EVEN TRY TO TAKE CTL OF THE ACFT AT THE TIME. WAKE ROLLED THE ACFT BUT NOT MUCH ELSE HAPPENED. A FLT ATTENDANT WAS STANDING PERFORMING PRELNDG CHK IN THE CABIN, SHE WAS KNOCKED DOWN. THE FLT ATTENDANT WAS ABLE TO WALK OFF THE ACFT AT DEST. NO FURTHER WORD AS TO HOW SEVERE HER INJURIES WERE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.