Cabin attendant falls when B767-300 encounters wake turbulence behind A320.

Attributes
ACN	751931
Time
Date	200708
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : aml.vortac
State Reference	VA
Altitude	msl single value : 20000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 16700 flight time type : 3000
ASRS Report	751931
Events
Anomaly	inflight encounter : wake turbulence
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Problem Areas	Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Climbing through FL200 assigned mach .78; 5 miles in trail and 1000 feet below an A320; aircraft experienced one heavy bump of turbulence; then again at FL300. Center then cleared us to climb to FL350; cruise; and assigned normal speed leaving FL330. No further turbulence occured. No obstructions to visibility in clear air. At cruise was informed that a flight attendant had fallen at FL200.

Original NASA ASRS Text

Title: CABIN ATTENDANT FALLS WHEN B767-300 ENCOUNTERS WAKE TURBULENCE BEHIND A320.

Narrative: CLIMBING THROUGH FL200 ASSIGNED MACH .78; 5 MILES IN TRAIL AND 1000 FEET BELOW AN A320; ACFT EXPERIENCED ONE HEAVY BUMP OF TURBULENCE; THEN AGAIN AT FL300. CENTER THEN CLEARED US TO CLIMB TO FL350; CRUISE; AND ASSIGNED NORMAL SPEED LEAVING FL330. NO FURTHER TURBULENCE OCCURED. NO OBSTRUCTIONS TO VISIBILITY IN CLEAR AIR. AT CRUISE WAS INFORMED THAT A FA HAD FALLEN AT FL200.

Data retrieved from NASA's ASRS site as of January 2009 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.