Medium large transport flies slower than assigned speed during climb out of mia.

Attributes
ACN	342230
Time
Date	199607
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mia
State Reference	FL
Altitude	msl bound lower : 13000 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 18000 flight time type : 2900
ASRS Report	342230
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ZMA instructed us to maintain 300 KTS or greater in climb. Speed was approximately 315 KTS while climbing in IAS hold mode of flight director. Performance management system was engaged some time later after handoff to another ATC sector. The performance system commanded an optimum climb of somewhat less than 300 KTS and forgetting about the previously assigned 300 plus speed, I allowed the aircraft to slow. Shortly after we were given a 10 degree turn for overtaking traffic and a clearance to maintain 'normal speed.' at this time I realized that we should still have been above 300 KTS. My crew and myself failed to adequately xchk aircraft speed and forgot about the speed restr when handed off to new sector. A reminder during the handoff might have been helpful, but ultimately we should have selected a 300 KTS plus speed in our performance computer to avoid the commanded speed reduction.

Original NASA ASRS Text

Title: MLG FLIES SLOWER THAN ASSIGNED SPD DURING CLB OUT OF MIA.

Narrative: ZMA INSTRUCTED US TO MAINTAIN 300 KTS OR GREATER IN CLB. SPD WAS APPROX 315 KTS WHILE CLBING IN IAS HOLD MODE OF FLT DIRECTOR. PERFORMANCE MGMNT SYS WAS ENGAGED SOME TIME LATER AFTER HDOF TO ANOTHER ATC SECTOR. THE PERFORMANCE SYS COMMANDED AN OPTIMUM CLB OF SOMEWHAT LESS THAN 300 KTS AND FORGETTING ABOUT THE PREVIOUSLY ASSIGNED 300 PLUS SPD, I ALLOWED THE ACFT TO SLOW. SHORTLY AFTER WE WERE GIVEN A 10 DEG TURN FOR OVERTAKING TFC AND A CLRNC TO MAINTAIN 'NORMAL SPD.' AT THIS TIME I REALIZED THAT WE SHOULD STILL HAVE BEEN ABOVE 300 KTS. MY CREW AND MYSELF FAILED TO ADEQUATELY XCHK ACFT SPD AND FORGOT ABOUT THE SPD RESTR WHEN HANDED OFF TO NEW SECTOR. A REMINDER DURING THE HDOF MIGHT HAVE BEEN HELPFUL, BUT ULTIMATELY WE SHOULD HAVE SELECTED A 300 KTS PLUS SPD IN OUR PERFORMANCE COMPUTER TO AVOID THE COMMANDED SPD REDUCTION.

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.