Narrative:

On gorman 1 departure from lax, departure controller assigned us to climb to 9000 ft and maintain 250 KTS. Heading into a setting sun, I was using the TCASII display to assist in visually obtaining aircraft which might be a conflict during our climb. The wake from a preceding aircraft caused a brief encounter with light chop. About this time I observed the airspeed increase slightly above 250 KTS, but was not concerned as I had already observed first officer increasing pitch to control the speed, and returned my attention to traffic watch. The highest speed I observed was 253 KTS, and did not again observe a speed in excess of 250 KTS while still speed restr. There was no conflict with traffic at this time, and safety was not compromised. To the air carrier inspector sitting in the cockpit jumpseat, however, this was a notable violation of far restricting airspeed to 250 KTS below 10000 ft MSL. Contributing factors: encounter with wake of preceding aircraft. Attempting to maintain controller assigned speed precisely. Technique for future avoidance: when assigned 250 KTS, maintain a speed slightly less than this until reaching 10000 ft MSL. This would allow a buffer for any slight increase in speed without exceeding the far 250 KT limit.

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Original NASA ASRS Text

Title: EXCESSIVE SPD BELOW 10000 FT FLC CORRECTED SPD TO 250 KTS.

Narrative: ON GORMAN 1 DEP FROM LAX, DEP CTLR ASSIGNED US TO CLB TO 9000 FT AND MAINTAIN 250 KTS. HEADING INTO A SETTING SUN, I WAS USING THE TCASII DISPLAY TO ASSIST IN VISUALLY OBTAINING ACFT WHICH MIGHT BE A CONFLICT DURING OUR CLB. THE WAKE FROM A PRECEDING ACFT CAUSED A BRIEF ENCOUNTER WITH LIGHT CHOP. ABOUT THIS TIME I OBSERVED THE AIRSPD INCREASE SLIGHTLY ABOVE 250 KTS, BUT WAS NOT CONCERNED AS I HAD ALREADY OBSERVED FO INCREASING PITCH TO CTL THE SPD, AND RETURNED MY ATTN TO TFC WATCH. THE HIGHEST SPD I OBSERVED WAS 253 KTS, AND DID NOT AGAIN OBSERVE A SPD IN EXCESS OF 250 KTS WHILE STILL SPD RESTR. THERE WAS NO CONFLICT WITH TFC AT THIS TIME, AND SAFETY WAS NOT COMPROMISED. TO THE ACR INSPECTOR SITTING IN THE COCKPIT JUMPSEAT, HOWEVER, THIS WAS A NOTABLE VIOLATION OF FAR RESTRICTING AIRSPD TO 250 KTS BELOW 10000 FT MSL. CONTRIBUTING FACTORS: ENCOUNTER WITH WAKE OF PRECEDING ACFT. ATTEMPTING TO MAINTAIN CTLR ASSIGNED SPD PRECISELY. TECHNIQUE FOR FUTURE AVOIDANCE: WHEN ASSIGNED 250 KTS, MAINTAIN A SPD SLIGHTLY LESS THAN THIS UNTIL REACHING 10000 FT MSL. THIS WOULD ALLOW A BUFFER FOR ANY SLIGHT INCREASE IN SPD WITHOUT EXCEEDING THE FAR 250 KT LIMIT.

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.