Air carrier captain reported the different crossing altitudes proscribed for the same fix on two dif...

Narrative:

Originally filed and cleared route involved the LECTR1 arrival; from torrr transition. ATC instruction to 'descend and maintain 17;000 feet.' after passing torrr the next ATC instruction was to proceed 'direct hanbl.' next ATC instruction was to 'descend via HANBL1.' initial thought was to cross hanbl at or above 11;000 feet and 260 knots; but that's on the hanbl.LECTR1 arrival; and not on the hanbl.HANBL1 arrival. That restriction is between 17;000 feet and 280 knots. Same fix name; different restriction. While still approaching 17;000 feet during the descent and querying ATC; we were instructed to 'descend and maintain 15;000 feet.' cause was too much similarity between the arrival names hanbl.HANBL1 and hanbl.LECTR1. There is too much similarity between the fix names that make up both arrivals; yet there are different speed and altitude restrictions using the same fix names. Lots of back and forth into kdtw lately between filed arrivals; then cleared arrival; only to get rerouted back to the original. Suggest not having the same fix names on multiple arrivals; or keeping the speed and altitude restrictions to said fixes the same amongst all the different arrivals that include that specific fix name. The names hanbl.HANBL1 and hanbl.LECTR1 as different arrivals are difficult to differentiate from each other since they are so easily associated together as one entity.

Original NASA ASRS Text

Title: Air carrier Captain reported the different crossing altitudes proscribed for the same fix on two different STARS into DTW creates confusion that could lead to airborne conflict.

Narrative: Originally filed and cleared route involved the LECTR1 arrival; from TORRR transition. ATC instruction to 'Descend and maintain 17;000 feet.' After passing TORRR the next ATC instruction was to proceed 'Direct HANBL.' Next ATC instruction was to 'Descend via HANBL1.' Initial thought was to cross HANBL at or above 11;000 feet and 260 knots; but that's on the HANBL.LECTR1 arrival; and not on the HANBL.HANBL1 arrival. That restriction is between 17;000 feet and 280 knots. Same fix name; different restriction. While still approaching 17;000 feet during the descent and querying ATC; we were instructed to 'Descend and maintain 15;000 feet.' Cause was too much similarity between the arrival names HANBL.HANBL1 and HANBL.LECTR1. There is too much similarity between the fix names that make up both arrivals; yet there are different speed and altitude restrictions using the same fix names. Lots of back and forth into KDTW lately between filed arrivals; then cleared arrival; only to get rerouted back to the original. Suggest not having the same fix names on multiple arrivals; or keeping the speed and altitude restrictions to said fixes the same amongst all the different arrivals that include that specific fix name. The names HANBL.HANBL1 and HANBL.LECTR1 as different arrivals are difficult to differentiate from each other since they are so easily associated together as one entity.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1584687
Time
Date	201810
Local Time Of Day	1801-2400
Place
Locale Reference	DTW.Airport
State Reference	MI
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Published Material / Policy

Air carrier captain reported the different crossing altitudes proscribed for the same fix on two different stars into dtw creates confusion that could lead to airborne conflict.