Air carrier Y had less than standard separation from air carrier X. Operational error.

Attributes
ACN	117095
Time
Date	198907
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sya
State Reference	AK
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : rjtg artcc : zan
Operator	common carrier : air carrier
Make Model Name	Heavy Transport
Flight Phase	cruise other
Route In Use	enroute : pacific enroute : other oceanic
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Heavy Transport
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : pacific
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : non radar
Qualification	controller : non radar
ASRS Report	117095
Person 2
Affiliation	government : faa
Function	controller : non radar
Qualification	controller : developmental
Events
Anomaly	non adherence : published procedure non adherence : required legal separation non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 99000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation Operational Error

Narrative:

Air carrier Y had 11 minutes intrail from air carrier X at one fix entering the oceanic sector. Both were assigned mach .84. They went by the next fix (600 miles) with 9 min. This error was overlooked. The estimates were passed to tokyo with 9 minutes. They crossed the exit fix with 8 minutes. Tokyo called the transferring sector before air carrier Y crossed the exit fix. 2 new controllers were at the sector. Action taken: air carrier Y speed reduced. No evasive action taken. Training was being conducted on both right and D sides. Reason for error: busy with traffic and did not see time error.

Original NASA ASRS Text

Title: ACR Y HAD LESS THAN STANDARD SEPARATION FROM ACR X. OPERATIONAL ERROR.

Narrative: ACR Y HAD 11 MINUTES INTRAIL FROM ACR X AT ONE FIX ENTERING THE OCEANIC SECTOR. BOTH WERE ASSIGNED MACH .84. THEY WENT BY THE NEXT FIX (600 MILES) WITH 9 MIN. THIS ERROR WAS OVERLOOKED. THE ESTIMATES WERE PASSED TO TOKYO WITH 9 MINUTES. THEY CROSSED THE EXIT FIX WITH 8 MINUTES. TOKYO CALLED THE TRANSFERRING SECTOR BEFORE ACR Y CROSSED THE EXIT FIX. 2 NEW CTLRS WERE AT THE SECTOR. ACTION TAKEN: ACR Y SPEED REDUCED. NO EVASIVE ACTION TAKEN. TRAINING WAS BEING CONDUCTED ON BOTH R AND D SIDES. REASON FOR ERROR: BUSY WITH TFC AND DID NOT SEE TIME ERROR.

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.