Less than standard separation in foreign airspace.

Attributes
ACN	278401
Time
Date	199407
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pta
State Reference	FO
Altitude	msl bound lower : 26000 msl bound upper : 26000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : mdcs
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : atlantic
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	arrival other enroute : atlantic enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	278401
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 other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Altitude deviation. We were level FL260 PTA140/15 DME nwbound approximately XA05 am jul/xx/94. Overheard air carrier flight give position report over pta FL280. He was then proceeding W9 PTA140 radial to sdq. We had visual contact approximately 12 mi. WX clear. Visibility unlimited. Received RA 2500 FPM rate of descent. Aircraft descended through our altitude approximately 4 mi at 3 O'clock. We had visual at all times and did not follow TCASII. Our clearance limit was FL260. I suspect sdq center gave descent prematurely. We made all position reports as per company and ICAO procedures. TCASII report submitted.

Original NASA ASRS Text

Title: LTSS IN FOREIGN AIRSPACE.

Narrative: ALTDEV. WE WERE LEVEL FL260 PTA140/15 DME NWBOUND APPROX XA05 AM JUL/XX/94. OVERHEARD ACR FLT GIVE POS RPT OVER PTA FL280. HE WAS THEN PROCEEDING W9 PTA140 RADIAL TO SDQ. WE HAD VISUAL CONTACT APPROX 12 MI. WX CLR. VISIBILITY UNLIMITED. RECEIVED RA 2500 FPM RATE OF DSCNT. ACFT DSNDED THROUGH OUR ALT APPROX 4 MI AT 3 O'CLOCK. WE HAD VISUAL AT ALL TIMES AND DID NOT FOLLOW TCASII. OUR CLRNC LIMIT WAS FL260. I SUSPECT SDQ CTR GAVE DSCNT PREMATURELY. WE MADE ALL POS RPTS AS PER COMPANY AND ICAO PROCS. TCASII RPT SUBMITTED.

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.