ZOB controller experienced operational error at FL250 because of unexpected route change.

Attributes
ACN	606434
Time
Date	200401
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : vwv.vor
State Reference	OH
Altitude	msl single value : 25000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Aircraft 2
Controlling Facilities	artcc : zob.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude climbout : vacating altitude
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 20
ASRS Report	606434
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 25200 vertical : 300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

The aircraft at FL250 was on an uncommon severe WX route and there was no severe WX. He made a sharp right turn into a dtw departure climbing over ape. The aircraft at FL250 has been told on numerous occasions not to file that route unless it is coordinated.

Original NASA ASRS Text

Title: ZOB CTLR EXPERIENCED OPERROR AT FL250 BECAUSE OF UNEXPECTED RTE CHANGE.

Narrative: THE ACFT AT FL250 WAS ON AN UNCOMMON SEVERE WX RTE AND THERE WAS NO SEVERE WX. HE MADE A SHARP R TURN INTO A DTW DEP CLBING OVER APE. THE ACFT AT FL250 HAS BEEN TOLD ON NUMEROUS OCCASIONS NOT TO FILE THAT RTE UNLESS IT IS COORDINATED.

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.