A CRJ700 flight crew reported that they complied with the first ZOB controller's clearance who later...

Attributes
ACN	620591
Time
Date	200406
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : cxr.vor
State Reference	OH
Altitude	msl single value : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet 700 ER&LR
Operating Under FAR Part	Part 121
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 185 flight time total : 15312 flight time type : 7823
ASRS Report	620591
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne less severe
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Miss Distance	horizontal : 30000 vertical : 0
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure

Narrative:

Originally cruising at FL370 direct dkk, ZOB instructed us to turn 20 degrees left for traffic, descend/maintain FL350. Upon leveling or shortly after leveling at FL350, ATC cleared us to FL330, but prior to reaching FL330, cleared us to descend to FL290, telling us to bring it down with a good rate. Both pilots heard each clearance and proper altitude alerter protocol was followed for each change to the altitude alerter. Prior to reaching FL290, the controller thanked us for the descent and reclred us back direct dkk, then gave us a frequency change. On check-in, the new controller asked us both the altitude we were leveling at and our heading. After replying that the previous controller cleared us to FL290 and direct dkk, we were instructed to turn left to 330 degrees for traffic 12 O'clock position, 5 mi, and then given a descent clearance to FL250. We made visual contact with the other traffic while in the turn, also saw its TCASII target pass just inside the 5 mi ring. No TCASII TA or RA sounded during the event, and after clear of the other traffic, ATC reclred us direct dkk. Supplemental information from acn 620590: 119.72 said FL310 was our altitude entered 'in the machine?'

Original NASA ASRS Text

Title: A CRJ700 FLT CREW RPTED THAT THEY COMPLIED WITH THE FIRST ZOB CTLR'S CLRNC WHO LATER HANDED THEM OFF TO THE NEXT ZOB CTLR WHO REVISED THEIR CLRNC FOR TFC SEPARATION.

Narrative: ORIGINALLY CRUISING AT FL370 DIRECT DKK, ZOB INSTRUCTED US TO TURN 20 DEGS L FOR TFC, DSND/MAINTAIN FL350. UPON LEVELING OR SHORTLY AFTER LEVELING AT FL350, ATC CLRED US TO FL330, BUT PRIOR TO REACHING FL330, CLRED US TO DSND TO FL290, TELLING US TO BRING IT DOWN WITH A GOOD RATE. BOTH PLTS HEARD EACH CLRNC AND PROPER ALT ALERTER PROTOCOL WAS FOLLOWED FOR EACH CHANGE TO THE ALT ALERTER. PRIOR TO REACHING FL290, THE CTLR THANKED US FOR THE DSCNT AND RECLRED US BACK DIRECT DKK, THEN GAVE US A FREQ CHANGE. ON CHK-IN, THE NEW CTLR ASKED US BOTH THE ALT WE WERE LEVELING AT AND OUR HDG. AFTER REPLYING THAT THE PREVIOUS CTLR CLRED US TO FL290 AND DIRECT DKK, WE WERE INSTRUCTED TO TURN L TO 330 DEGS FOR TFC 12 O'CLOCK POS, 5 MI, AND THEN GIVEN A DSCNT CLRNC TO FL250. WE MADE VISUAL CONTACT WITH THE OTHER TFC WHILE IN THE TURN, ALSO SAW ITS TCASII TARGET PASS JUST INSIDE THE 5 MI RING. NO TCASII TA OR RA SOUNDED DURING THE EVENT, AND AFTER CLR OF THE OTHER TFC, ATC RECLRED US DIRECT DKK. SUPPLEMENTAL INFO FROM ACN 620590: 119.72 SAID FL310 WAS OUR ALT ENTERED 'IN THE MACHINE?'

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.

A CRJ700 flight crew reported that they complied with the first ZOB controller's clearance who later handed them off to the next ZOB controller who revised their clearance for traffic separation.