Air carrier flight crew misread and brief dfw STAR and turn at the wrong intersection.

Attributes
ACN	508579
Time
Date	200104
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : lemyn
State Reference	TX
Altitude	msl single value : 11000
Environment
Flight Conditions	Mixed
Weather Elements	Rain
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d10.tracon artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 12 flight time total : 6000 flight time type : 12
ASRS Report	508579
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	inflight encounter : weather non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued new clearance controller : issued advisory flight crew : became reoriented flight crew : returned to intended or assigned course
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance Weather Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Chart	approach : bonham.star

Narrative:

Dfw was landing to the north and we were on the byp.BYP3 arrival. The captain and myself misread the procedure and executed a turn and at the lemyn fix to 190 degrees. ATC queried us as to our heading and gave us a corrective action to rejoin the arrival. Upon studying the arrival again, we realized that heading was for 'non turbojets.' we had briefed the arrival in cruise and felt we were familiar with it. Neither of us had been to dfw with any frequency and were striving to be extra vigilant. However, we both misread this vital wording. Rainshowers were in the vicinity along with the regular high volume of traffic. This, combined with a quick glance down to check our progress along the arrival, led us to proceed on the wrong course. Besides the obvious (of our being more vigilant) some consideration might be given to changing the 2 very similar 'turbojets' versus 'non turbojets' words to 'turbojets' versus 'propellers' or 'other aircraft' on the arrival charting. This might aid pilots in easily differentiating the courses.

Original NASA ASRS Text

Title: ACR FLC MISREAD AND BRIEF DFW STAR AND TURN AT THE WRONG INTXN.

Narrative: DFW WAS LNDG TO THE N AND WE WERE ON THE BYP.BYP3 ARR. THE CAPT AND MYSELF MISREAD THE PROC AND EXECUTED A TURN AND AT THE LEMYN FIX TO 190 DEGS. ATC QUERIED US AS TO OUR HDG AND GAVE US A CORRECTIVE ACTION TO REJOIN THE ARR. UPON STUDYING THE ARR AGAIN, WE REALIZED THAT HDG WAS FOR 'NON TURBOJETS.' WE HAD BRIEFED THE ARR IN CRUISE AND FELT WE WERE FAMILIAR WITH IT. NEITHER OF US HAD BEEN TO DFW WITH ANY FREQ AND WERE STRIVING TO BE EXTRA VIGILANT. HOWEVER, WE BOTH MISREAD THIS VITAL WORDING. RAINSHOWERS WERE IN THE VICINITY ALONG WITH THE REGULAR HIGH VOLUME OF TFC. THIS, COMBINED WITH A QUICK GLANCE DOWN TO CHK OUR PROGRESS ALONG THE ARR, LED US TO PROCEED ON THE WRONG COURSE. BESIDES THE OBVIOUS (OF OUR BEING MORE VIGILANT) SOME CONSIDERATION MIGHT BE GIVEN TO CHANGING THE 2 VERY SIMILAR 'TURBOJETS' VERSUS 'NON TURBOJETS' WORDS TO 'TURBOJETS' VERSUS 'PROPS' OR 'OTHER ACFT' ON THE ARR CHARTING. THIS MIGHT AID PLTS IN EASILY DIFFERENTIATING THE COURSES.

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.