Flight crew of medium large transport on downwind slows from 250 KTS to 210 KTS without clearance.

Attributes
ACN	364210
Time
Date	199703
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : instrument
Experience	flight time last 90 days : 225 flight time total : 6000 flight time type : 3000
ASRS Report	364210
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 other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Captain flying aircraft at 250 KTS slowed to 210 KTS without clearance from approach control. Instructions need to be published, that at ord, to fly at required speeds until advised.

Original NASA ASRS Text

Title: FLC OF MLG ON DOWNWIND SLOWS FROM 250 KTS TO 210 KTS WITHOUT CLRNC.

Narrative: CAPT FLYING ACFT AT 250 KTS SLOWED TO 210 KTS WITHOUT CLRNC FROM APCH CTL. INSTRUCTIONS NEED TO BE PUBLISHED, THAT AT ORD, TO FLY AT REQUIRED SPDS UNTIL ADVISED.

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.