Air carrier B737-300 experiences wake turbulence after liftoff from lax.

Attributes
ACN	343558
Time
Date	199608
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 800 msl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp
Experience	controller non radar : 3 controller supervisory : 1 flight time last 90 days : 240 flight time total : 10000 flight time type : 2000
ASRS Report	343558
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	inflight encounter other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time none taken : unable
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

We were cleared for takeoff right behind an md-80 (air carrier xx). As we rolled he was just lifting off. No clearance yet for visual separation. At about 800 ft we rolled hard left, bank about 10-15 degrees with 50-75 percent aileron authority/authorized to counter the roll, also moderate turbulence in the wake. Lasted about 5 seconds. Hit it again at about 4000 ft AGL, but only a momentary roll. Separation was way too close for comfort! Callback conversation with reporter revealed the following information: reporter participated in the wake turbulence structured callback study. Reporter was adamant that greater separation should have been provided for departing aircraft. Wind was calm, conditions were proper for wake to linger along any departing aircraft flight path. Reporter was mostly angry about being caught at low levels in moderate turbulence. Control was maintained throughout the event. It was long lasting for the situation which contributed to the flight crew uneasiness about what was happening.

Original NASA ASRS Text

Title: ACR B737-300 EXPERIENCES WAKE TURB AFTER LIFTOFF FROM LAX.

Narrative: WE WERE CLRED FOR TKOF RIGHT BEHIND AN MD-80 (ACR XX). AS WE ROLLED HE WAS JUST LIFTING OFF. NO CLRNC YET FOR VISUAL SEPARATION. AT ABOUT 800 FT WE ROLLED HARD L, BANK ABOUT 10-15 DEGS WITH 50-75 PERCENT AILERON AUTH TO COUNTER THE ROLL, ALSO MODERATE TURB IN THE WAKE. LASTED ABOUT 5 SECONDS. HIT IT AGAIN AT ABOUT 4000 FT AGL, BUT ONLY A MOMENTARY ROLL. SEPARATION WAS WAY TOO CLOSE FOR COMFORT! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN THE WAKE TURB STRUCTURED CALLBACK STUDY. RPTR WAS ADAMANT THAT GREATER SEPARATION SHOULD HAVE BEEN PROVIDED FOR DEPARTING ACFT. WIND WAS CALM, CONDITIONS WERE PROPER FOR WAKE TO LINGER ALONG ANY DEPARTING ACFT FLT PATH. RPTR WAS MOSTLY ANGRY ABOUT BEING CAUGHT AT LOW LEVELS IN MODERATE TURB. CTL WAS MAINTAINED THROUGHOUT THE EVENT. IT WAS LONG LASTING FOR THE SIT WHICH CONTRIBUTED TO THE FLC UNEASINESS ABOUT WHAT WAS HAPPENING.

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.