Air carrier captain reports very similar fix names on dfw SID and iah STAR.

Attributes
ACN	729258
Time
Date	200702
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : owwls
State Reference	TX
Altitude	msl single value : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu.artcc tracon : sbn.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude descent : approach
Route In Use	arrival star : riice
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	719258
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Chart Or Publication
Primary Problem	Chart Or Publication

Narrative:

We were filed and cleared to iah on DARTZ2 bilee RIICE1. On the DARTZ2 there is waypoint owlls and on the RIICE1 waypoint owwls. These waypoints are too similar and can be easily confused by those of us who don't normally fly intra-texas flts. One of these names need to be changed especially in light of the emphasis on RNAV departures out of dfw.

Original NASA ASRS Text

Title: ACR CAPT RPTS VERY SIMILAR FIX NAMES ON DFW SID AND IAH STAR.

Narrative: WE WERE FILED AND CLRED TO IAH ON DARTZ2 BILEE RIICE1. ON THE DARTZ2 THERE IS WAYPOINT OWLLS AND ON THE RIICE1 WAYPOINT OWWLS. THESE WAYPOINTS ARE TOO SIMILAR AND CAN BE EASILY CONFUSED BY THOSE OF US WHO DON'T NORMALLY FLY INTRA-TEXAS FLTS. ONE OF THESE NAMES NEED TO BE CHANGED ESPECIALLY IN LIGHT OF THE EMPHASIS ON RNAV DEPS OUT OF DFW.

Data retrieved from NASA's ASRS site as of January 2009 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.