Flight crew of H25A turn wrong direction after departure runway 4R at mdw.

Attributes
ACN	614404
Time
Date	200404
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mdw.airport
State Reference	IL
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mdw.tower
Operator	common carrier : air carrier
Make Model Name	HS 125 Series
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	departure sid : midway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 120 flight time total : 4000 flight time type : 1360
ASRS Report	614404
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : became reoriented
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was the first officer assigned to the trip, occupying the left seat and acting as the PF. During taxi out to runway 4R at mdw, the captain (PNF), briefed the midway 4 departure since there was only one set of charts on the airplane. He stated the departure as 'turn right climb on heading 100 degrees until leaving 240OO ft then whatever is assigned.' since he was reading off the chart, I accepted the instructions. Tower cleared us for takeoff and said, 'after departure, turn left heading 250 degrees.' a normal takeoff was accomplished. Once airborne, I stated 'turning left to 250 degrees.' the captain immediately stated, 'do not turn. The departure states to turn right to 100 degrees initially.' I stated again, that is not correct, turning to 250 degrees. As I started the turn, the captain raised his voice and said, 'turn right, right turn to 100 degrees.' I did not want to argue and turned right to 100 degrees. After a few mi, departure told us that we were to make a left turn to 250 degrees. The captain then said he had misread the departure instructions. I believe that if I had briefed the departure and read it thoroughly instead of relying on the captain, we would have compiled with the departure correctly. I also think that if I would have had the departure chart in front of me, I would have been able to confirm the initial departure instructions after takeoff.

Original NASA ASRS Text

Title: FLT CREW OF H25A TURN WRONG DIRECTION AFTER DEP RWY 4R AT MDW.

Narrative: I WAS THE FO ASSIGNED TO THE TRIP, OCCUPYING THE L SEAT AND ACTING AS THE PF. DURING TAXI OUT TO RWY 4R AT MDW, THE CAPT (PNF), BRIEFED THE MIDWAY 4 DEP SINCE THERE WAS ONLY ONE SET OF CHARTS ON THE AIRPLANE. HE STATED THE DEP AS 'TURN R CLB ON HDG 100 DEGS UNTIL LEAVING 240OO FT THEN WHATEVER IS ASSIGNED.' SINCE HE WAS READING OFF THE CHART, I ACCEPTED THE INSTRUCTIONS. TWR CLRED US FOR TKOF AND SAID, 'AFTER DEP, TURN L HDG 250 DEGS.' A NORMAL TKOF WAS ACCOMPLISHED. ONCE AIRBORNE, I STATED 'TURNING L TO 250 DEGS.' THE CAPT IMMEDIATELY STATED, 'DO NOT TURN. THE DEP STATES TO TURN R TO 100 DEGS INITIALLY.' I STATED AGAIN, THAT IS NOT CORRECT, TURNING TO 250 DEGS. AS I STARTED THE TURN, THE CAPT RAISED HIS VOICE AND SAID, 'TURN R, R TURN TO 100 DEGS.' I DID NOT WANT TO ARGUE AND TURNED R TO 100 DEGS. AFTER A FEW MI, DEP TOLD US THAT WE WERE TO MAKE A L TURN TO 250 DEGS. THE CAPT THEN SAID HE HAD MISREAD THE DEP INSTRUCTIONS. I BELIEVE THAT IF I HAD BRIEFED THE DEP AND READ IT THOROUGHLY INSTEAD OF RELYING ON THE CAPT, WE WOULD HAVE COMPILED WITH THE DEP CORRECTLY. I ALSO THINK THAT IF I WOULD HAVE HAD THE DEP CHART IN FRONT OF ME, I WOULD HAVE BEEN ABLE TO CONFIRM THE INITIAL DEP INSTRUCTIONS AFTER TKOF.

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.