Crew in B737-300 departed phx behind an A320 and encountered moderate wake turbulence.

Attributes
ACN	460291
Time
Date	200001
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	agl single value : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : phx.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : phx.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
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 : 12700 flight time type : 2000
ASRS Report	460291
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	inflight encounter : wake turbulence
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took precautionary avoidance action
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Departed runway 8R phx behind an A320. Shortly after liftoff encountered moderate wake turbulence from preceding airplane. This continued for 30 seconds. I requested a turn from ATC to get out of the wake. No response. Even though the airplane was under control, it was evident that control was difficult and immediate action was needed to move out of the wake. I then informed ATC that we were turning right to avoid the wake. At that time, ATC responded and gave us a vector north of the departure path. Later resumed the departure.

Original NASA ASRS Text

Title: CREW IN B737-300 DEPARTED PHX BEHIND AN A320 AND ENCOUNTERED MODERATE WAKE TURB.

Narrative: DEPARTED RWY 8R PHX BEHIND AN A320. SHORTLY AFTER LIFTOFF ENCOUNTERED MODERATE WAKE TURB FROM PRECEDING AIRPLANE. THIS CONTINUED FOR 30 SECONDS. I REQUESTED A TURN FROM ATC TO GET OUT OF THE WAKE. NO RESPONSE. EVEN THOUGH THE AIRPLANE WAS UNDER CTL, IT WAS EVIDENT THAT CTL WAS DIFFICULT AND IMMEDIATE ACTION WAS NEEDED TO MOVE OUT OF THE WAKE. I THEN INFORMED ATC THAT WE WERE TURNING R TO AVOID THE WAKE. AT THAT TIME, ATC RESPONDED AND GAVE US A VECTOR N OF THE DEP PATH. LATER RESUMED THE DEP.

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.