Close proximity 2 opposite direction air carrier lgts on A636 a non radar environment.

Attributes
ACN	189011
Time
Date	199109
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mteg
State Reference	FO
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute airway : a636
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 18000 flight time type : 17000
ASRS Report	189011
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 75 vertical : 750
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was cleared to descend and maintain FL230 en route to puerto plata on A636. Miami center switched us to port au prince control at albee intersection. Shortly after we checked in with port au prince an large transport Y checked in level FL230 nwbound on A636. Port au prince control informed him that he was only cleared to FL220 and to immediately descend to FL220 and for us to immediately climb to FL240. Port au prince control should be credited with a great save as large transport Y passed directly under our flight. Had other aircraft paid more attention to detail in the non radar environment this never would have occurred.

Original NASA ASRS Text

Title: CLOSE PROX 2 OPPOSITE DIRECTION ACR LGTS ON A636 A NON RADAR ENVIRONMENT.

Narrative: I WAS CLRED TO DSND AND MAINTAIN FL230 ENRTE TO PUERTO PLATA ON A636. MIAMI CENTER SWITCHED US TO PORT AU PRINCE CTL AT ALBEE INTXN. SHORTLY AFTER WE CHKED IN WITH PORT AU PRINCE AN LGT Y CHKED IN LEVEL FL230 NWBOUND ON A636. PORT AU PRINCE CTL INFORMED HIM THAT HE WAS ONLY CLRED TO FL220 AND TO IMMEDIATELY DSND TO FL220 AND FOR US TO IMMEDIATELY CLB TO FL240. PORT AU PRINCE CTL SHOULD BE CREDITED WITH A GREAT SAVE AS LGT Y PASSED DIRECTLY UNDER OUR FLT. HAD OTHER ACFT PAID MORE ATTN TO DETAIL IN THE NON RADAR ENVIRONMENT THIS NEVER WOULD HAVE OCCURRED.

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.