B737 encounters wake turbulence. Passenger and crew injured.

Attributes
ACN	447882
Time
Date	199909
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : rzs.vor
State Reference	CA
Altitude	msl single value : 24000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute airway : v501.airway
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : descent cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 275 flight time total : 7500 flight time type : 1890
ASRS Report	447882
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	altitude deviation : excursion from assigned altitude cabin event other inflight encounter : wake turbulence other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : regained aircraft control flight crew : returned to assigned altitude
Consequence	other
Supplementary
Problem Areas	ATC Human Performance Airspace Structure Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Suspected wake turbulence encounter behind MD11. Cruise flight at FL240, 310 KIAS in the vicinity of rzs VOR. Sky was VMC, smooth and clear. Autoplt and autothrottles were on. Departed lax on a flight to sfo (lax VTU2 rzs J501 bsr BSR2 sfo). After flying several vector headings during the departure, we were cleared direct to rzs with a climb to FL240, our final cruise altitude for the flight. We had been level at our cruise altitude for a few mins when we encountered a left roll with a pitch down attitude. I disconnected the autoplt, rolled the aircraft level, and regained the 200 ft altitude loss. I then re-engaged the autoplt. I called the 'a' flight attendant to determine if any injuries had occurred. The 'a' flight attendant stated that the 2 aft flight attendants and 1 passenger had been injured. I asked the controller if there were any aircraft near us. He stated that an MD11 had climbed through our altitude ahead of us. He was approximately 10-12 mi ahead of us. The first officer contacted dispatch and requested medical aid upon our arrival. I told ATC we had a medical emergency and requested a lifeguard call sign. We were cleared direct sfo. We landed on runway 28L (visual) and then proceeded directly to the gate. Paramedics were waiting and boarded the aircraft as soon as possible.

Original NASA ASRS Text

Title: B737 ENCOUNTERS WAKE TURB. PAX AND CREW INJURED.

Narrative: SUSPECTED WAKE TURB ENCOUNTER BEHIND MD11. CRUISE FLT AT FL240, 310 KIAS IN THE VICINITY OF RZS VOR. SKY WAS VMC, SMOOTH AND CLR. AUTOPLT AND AUTOTHROTTLES WERE ON. DEPARTED LAX ON A FLT TO SFO (LAX VTU2 RZS J501 BSR BSR2 SFO). AFTER FLYING SEVERAL VECTOR HDGS DURING THE DEP, WE WERE CLRED DIRECT TO RZS WITH A CLB TO FL240, OUR FINAL CRUISE ALT FOR THE FLT. WE HAD BEEN LEVEL AT OUR CRUISE ALT FOR A FEW MINS WHEN WE ENCOUNTERED A L ROLL WITH A PITCH DOWN ATTITUDE. I DISCONNECTED THE AUTOPLT, ROLLED THE ACFT LEVEL, AND REGAINED THE 200 FT ALT LOSS. I THEN RE-ENGAGED THE AUTOPLT. I CALLED THE 'A' FLT ATTENDANT TO DETERMINE IF ANY INJURIES HAD OCCURRED. THE 'A' FLT ATTENDANT STATED THAT THE 2 AFT FLT ATTENDANTS AND 1 PAX HAD BEEN INJURED. I ASKED THE CTLR IF THERE WERE ANY ACFT NEAR US. HE STATED THAT AN MD11 HAD CLBED THROUGH OUR ALT AHEAD OF US. HE WAS APPROX 10-12 MI AHEAD OF US. THE FO CONTACTED DISPATCH AND REQUESTED MEDICAL AID UPON OUR ARR. I TOLD ATC WE HAD A MEDICAL EMER AND REQUESTED A LIFEGUARD CALL SIGN. WE WERE CLRED DIRECT SFO. WE LANDED ON RWY 28L (VISUAL) AND THEN PROCEEDED DIRECTLY TO THE GATE. PARAMEDICS WERE WAITING AND BOARDED THE ACFT ASAP.

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.