Track deviation on departure from houston, tx.

Attributes
ACN	485980
Time
Date	200009
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hou.airport
State Reference	TX
Altitude	msl single value : 1500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hou&.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial ground : takeoff roll
Route In Use	departure : on vectors departure sid : hobby
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	485980
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllerb
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Our clearance was the hobby 2 as filed. When cleared for takeoff, the captain read back 'cleared for takeoff, runway 12R left to 120 degrees.' runway heading for runway 12 is 129 degrees. Shortly after takeoff, tower advised to tighten turn to 320 degrees or 330 degrees. Tower then asked if we were aware of the restr to complete all turns within 3 mi of hobby VOR. Tower obviously wanted a left turn to the north after takeoff, but that is not what was understood or read back. I recommend that if tight turns are required immediately after takeoff because of airspace restrs, those turns should be given by clearance delivery or printed on a SID instead of issued by tower with the takeoff clearance.

Original NASA ASRS Text

Title: TRACK DEV ON DEP FROM HOUSTON, TX.

Narrative: OUR CLRNC WAS THE HOBBY 2 AS FILED. WHEN CLRED FOR TKOF, THE CAPT READ BACK 'CLRED FOR TKOF, RWY 12R L TO 120 DEGS.' RWY HDG FOR RWY 12 IS 129 DEGS. SHORTLY AFTER TKOF, TWR ADVISED TO TIGHTEN TURN TO 320 DEGS OR 330 DEGS. TWR THEN ASKED IF WE WERE AWARE OF THE RESTR TO COMPLETE ALL TURNS WITHIN 3 MI OF HOBBY VOR. TWR OBVIOUSLY WANTED A L TURN TO THE N AFTER TKOF, BUT THAT IS NOT WHAT WAS UNDERSTOOD OR READ BACK. I RECOMMEND THAT IF TIGHT TURNS ARE REQUIRED IMMEDIATELY AFTER TKOF BECAUSE OF AIRSPACE RESTRS, THOSE TURNS SHOULD BE GIVEN BY CLRNC DELIVERY OR PRINTED ON A SID INSTEAD OF ISSUED BY TWR WITH THE TKOF CLRNC.

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.