Wrong heading is taken after departure from ord runway 9L.

Attributes
ACN	522080
Time
Date	200108
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 400
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : clt.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	522080
Events
Anomaly	non adherence : clearance other spatial deviation
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Taking runway and cleared for takeoff on runway 9L, heard tower assign heading 040 degrees. First officer responded heading 040 degrees. At 400 ft, began left turn and tower called to turn right to 140 degrees as cleared. We were at V2 +20 KTS and went to 30 degree bank turn. Tower then said turn to 180 degrees. We complied. Tower said original heading was 140 degrees.

Original NASA ASRS Text

Title: WRONG HDG IS TAKEN AFTER DEP FROM ORD RWY 9L.

Narrative: TAKING RWY AND CLRED FOR TKOF ON RWY 9L, HEARD TWR ASSIGN HDG 040 DEGS. FO RESPONDED HDG 040 DEGS. AT 400 FT, BEGAN L TURN AND TWR CALLED TO TURN R TO 140 DEGS AS CLRED. WE WERE AT V2 +20 KTS AND WENT TO 30 DEG BANK TURN. TWR THEN SAID TURN TO 180 DEGS. WE COMPLIED. TWR SAID ORIGINAL HDG WAS 140 DEGS.

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.