Air carrier being vectored was issued an immediate descent because of conflicting traffic.

Attributes
ACN	113635
Time
Date	198906
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : hya
State Reference	MA
Altitude	msl bound lower : 26400 msl bound upper : 27000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 18 controller radar : 17
ASRS Report	113635
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 13800 vertical : 600
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation Operational Error

Narrative:

I had one aircraft in holding over hyannis VOR and another holding over ack VOR. I was forced to use 2 fixes because there was not enough room to hold all the aircraft at hya. The 1ST aircraft (air carrier X holding at hya) overflew the fix in holding and made a left turn instead of right at FL310. The second aircraft (air carrier Y holding at ack) asked for a reroute to bradley, ct. He was issued clearance and placed on a 290 degree heading. This put him on a conflicting course with air carrier X. Because air carrier X made a left turn at ha, air carrier Y was issued descent clearance immediately.

Original NASA ASRS Text

Title: ACR BEING VECTORED WAS ISSUED AN IMMEDIATE DESCENT BECAUSE OF CONFLICTING TRAFFIC.

Narrative: I HAD ONE ACFT IN HOLDING OVER HYANNIS VOR AND ANOTHER HOLDING OVER ACK VOR. I WAS FORCED TO USE 2 FIXES BECAUSE THERE WAS NOT ENOUGH ROOM TO HOLD ALL THE ACFT AT HYA. THE 1ST ACFT (ACR X HOLDING AT HYA) OVERFLEW THE FIX IN HOLDING AND MADE A LEFT TURN INSTEAD OF RIGHT AT FL310. THE SECOND ACFT (ACR Y HOLDING AT ACK) ASKED FOR A REROUTE TO BRADLEY, CT. HE WAS ISSUED CLRNC AND PLACED ON A 290 DEG HDG. THIS PUT HIM ON A CONFLICTING COURSE WITH ACR X. BECAUSE ACR X MADE A LEFT TURN AT HA, ACR Y WAS ISSUED DESCENT CLRNC IMMEDIATELY.

Data retrieved from NASA's ASRS site as of August 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.