Air carrier medium large transport non adherence to ATC clearance speed deviation.

Attributes
ACN	95169
Time
Date	198809
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 20000 msl bound upper : 30000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 3000 flight time type : 95
ASRS Report	95169
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On the departure climbing somewhere between 20000 and 30000', ATC assigned us an airspeed of 310 KTS or greater. We complied and ATC gave us a frequency change. The new frequency was extremely busy with many aircraft transmitting simultaneously. During this phase we encountered moderate turbulence. The captain slowed the aircraft to 270 KTS. ATC requested our indicated airspeed. I informed him, followed by the captain, saying that we had slowed for chop and that the busy frequency had prevented him from informing ATC in a timely manner. ATC sounded irritated, gave us a vector off course and requested the aircraft behind us to slow to 250 KTS in order to 'save a career.' my analysis is that myself or the captain should have made a greater effort to get on frequency and inform ATC. However the attitude expressed by the controller through his comments was very unprofessional and unnecessary.

Original NASA ASRS Text

Title: ACR MLG NON ADHERENCE TO ATC CLRNC SPEED DEVIATION.

Narrative: ON THE DEP CLBING SOMEWHERE BTWN 20000 AND 30000', ATC ASSIGNED US AN AIRSPD OF 310 KTS OR GREATER. WE COMPLIED AND ATC GAVE US A FREQ CHANGE. THE NEW FREQ WAS EXTREMELY BUSY WITH MANY ACFT XMITTING SIMULTANEOUSLY. DURING THIS PHASE WE ENCOUNTERED MODERATE TURB. THE CAPT SLOWED THE ACFT TO 270 KTS. ATC REQUESTED OUR INDICATED AIRSPD. I INFORMED HIM, FOLLOWED BY THE CAPT, SAYING THAT WE HAD SLOWED FOR CHOP AND THAT THE BUSY FREQ HAD PREVENTED HIM FROM INFORMING ATC IN A TIMELY MANNER. ATC SOUNDED IRRITATED, GAVE US A VECTOR OFF COURSE AND REQUESTED THE ACFT BEHIND US TO SLOW TO 250 KTS IN ORDER TO 'SAVE A CAREER.' MY ANALYSIS IS THAT MYSELF OR THE CAPT SHOULD HAVE MADE A GREATER EFFORT TO GET ON FREQ AND INFORM ATC. HOWEVER THE ATTITUDE EXPRESSED BY THE CTLR THROUGH HIS COMMENTS WAS VERY UNPROFESSIONAL AND UNNECESSARY.

Data retrieved from NASA's ASRS site as of August 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.