Crew turned to wrong heading on departure.

Attributes
ACN	429158
Time
Date	199902
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lbb.airport
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : lbb.tracon tower : lbb.tower
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 4500 flight time type : 1400
ASRS Report	429158
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 6000 flight time type : 3000
ASRS Report	429030
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : issued advisory
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We have been flying out of lbb airport for the last month. Each and every time we get a climb vector anywhere from 030 degrees to 060 degrees to intercept on course heading. Normally we depart on runway 17R as we did this particular night. On climb out, we were given a clearance to climb on a heading of 050 degrees. We read back 050 degrees to the tower controller, who was also the departure controller. Upon rolling out on 050 degrees, the controller asked us what heading we were on and we told him. He then said 'your assigned heading ws 150 degrees.' nobody caught the error in the cockpit. ATC did not catch an incorrect readback. I think the biggest gotcha of this event was to not expect things to be the same all the time. The assigned heading sounds similar to the heading we usually got and expected to get once again.

Original NASA ASRS Text

Title: CREW TURNED TO WRONG HDG ON DEP.

Narrative: WE HAVE BEEN FLYING OUT OF LBB ARPT FOR THE LAST MONTH. EACH AND EVERY TIME WE GET A CLB VECTOR ANYWHERE FROM 030 DEGS TO 060 DEGS TO INTERCEPT ON COURSE HDG. NORMALLY WE DEPART ON RWY 17R AS WE DID THIS PARTICULAR NIGHT. ON CLBOUT, WE WERE GIVEN A CLRNC TO CLB ON A HDG OF 050 DEGS. WE READ BACK 050 DEGS TO THE TWR CTLR, WHO WAS ALSO THE DEP CTLR. UPON ROLLING OUT ON 050 DEGS, THE CTLR ASKED US WHAT HDG WE WERE ON AND WE TOLD HIM. HE THEN SAID 'YOUR ASSIGNED HDG WS 150 DEGS.' NOBODY CAUGHT THE ERROR IN THE COCKPIT. ATC DID NOT CATCH AN INCORRECT READBACK. I THINK THE BIGGEST GOTCHA OF THIS EVENT WAS TO NOT EXPECT THINGS TO BE THE SAME ALL THE TIME. THE ASSIGNED HDG SOUNDS SIMILAR TO THE HDG WE USUALLY GOT AND EXPECTED TO GET ONCE AGAIN.

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.