ZMP controller reports of confusion of two stars that go to one airport with similar fixes. Controll...

Narrative:

Aircraft X departed ZZZ; and I re-routed them to 'fghrn; then direct fah; then as filed.' the company filed ZZZ1..fah.MADII1.kord. They flew the ERNNY2 arrival instead. That is the way the company filed; the pilot never had to read back the arrival name. They weren't required to. When ZMP passed the flight plan to ZZZ tower; the controller would normally say; 'cleared to ord via ZZZ1; then as filed.' so the pilot/aircraft/FMS flew the ERNNY2 STAR instead; which mke approach was not expecting.there is no safety in this plan. Two stars; the MADII1 and the ERNNY2; are built right on top of each other; with similar fixes; so unless we ask the pilot every time; we have no way to know which arrival is programmed in the FMS. Additionally; the pilot; when programming; could see the first fix (ZZZ1 or fghrn) and push that button prematurely; without verifying the entire arrival.this situation is unsafe; and needs to be changed as soon as possible. They need to have one STAR here; with different transition way-points instead of two stars built on top of each other.

Original NASA ASRS Text

Title: ZMP Controller reports of confusion of two STARS that go to one airport with similar fixes. Controllers do not know what STAR the pilots are actually flying until reporting in or questioned.

Narrative: Aircraft X departed ZZZ; and I re-routed them to 'FGHRN; then direct FAH; then as filed.' The company filed ZZZ1..FAH.MADII1.KORD. They flew the ERNNY2 arrival instead. That is the way the company filed; the pilot never had to read back the arrival name. They weren't required to. When ZMP passed the flight plan to ZZZ tower; the controller would normally say; 'Cleared to ORD via ZZZ1; then as filed.' So the pilot/aircraft/FMS flew the ERNNY2 STAR instead; which MKE approach was not expecting.There is no safety in this plan. Two STARS; the MADII1 and the ERNNY2; are built right on top of each other; with similar fixes; so unless we ask the pilot every time; we have no way to know which arrival is programmed in the FMS. Additionally; the pilot; when programming; could see the first fix (ZZZ1 or FGHRN) and push that button prematurely; without verifying the entire arrival.This situation is unsafe; and needs to be changed ASAP. They need to have one STAR here; with different transition way-points instead of two STARS built on top of each other.

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	1221287
Time
Date	201411
Local Time Of Day	1801-2400
Place
Locale Reference	ZMP.ARTCC
State Reference	MN
Environment
Light	Night
Aircraft 1
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR ERNNY2
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 7
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance

ZMP controller reports of confusion of two stars that go to one airport with similar fixes. Controllers do not know what STAR the pilots are actually flying until reporting in or questioned.