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Large transport and medium large transport took evasive action to miss each other. Large transport climbing and medium large transport descending under non radar control or foreign ARTCC.
| Attributes | |
| ACN | 91614 |
| Time | |
| Date | 198807 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pta |
| State Reference | FO |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : pns |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : mdcs |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent 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 : 240 flight time total : 25000 |
| ASRS Report | 91614 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 499 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Large transport X executed a takeoff from puerto plata, D.right. At XA4Z in accordance with the following clearance: 'large transport X cleared to sekar intersection via A-554; maintain flight level 100. Expect further clearance on 124.3 from santo domingo. Cleared for takeoff.' at approximately XA51 Z, while on A-554, climbing through 6,000 MSL, in contact with santo domingo and attempting to clarify further clearance; the flight encountered and turned away from head on converging, medium large transport Y, traffic at our altitude. Our exact position at that time was on the 349 degree radial of the pta VOR, 17 DME; some 25 miles prior to sekar. After passing a short conversation was held with the other aircraft, which proved to be foreign air carrier medium large transport Y. The conversation revealed that medium large transport Y had been cleared inbound to descend to 6,000 MSL while large transport X had been cleared outbnd to climb to FL100.
Original NASA ASRS Text
Title: LGT AND MLG TOOK EVASIVE ACTION TO MISS EACH OTHER. LGT CLIMBING AND MLG DESCENDING UNDER NON RADAR CTL OR FOREIGN ARTCC.
Narrative: LGT X EXECUTED A TKOF FROM PUERTO PLATA, D.R. AT XA4Z IN ACCORDANCE WITH THE FOLLOWING CLRNC: 'LGT X CLRED TO SEKAR INTXN VIA A-554; MAINTAIN FLT LEVEL 100. EXPECT FURTHER CLRNC ON 124.3 FROM SANTO DOMINGO. CLRED FOR TKOF.' AT APPROX XA51 Z, WHILE ON A-554, CLBING THROUGH 6,000 MSL, IN CONTACT WITH SANTO DOMINGO AND ATTEMPTING TO CLARIFY FURTHER CLRNC; THE FLT ENCOUNTERED AND TURNED AWAY FROM HEAD ON CONVERGING, MLG Y, TFC AT OUR ALT. OUR EXACT POS AT THAT TIME WAS ON THE 349 DEG RADIAL OF THE PTA VOR, 17 DME; SOME 25 MILES PRIOR TO SEKAR. AFTER PASSING A SHORT CONVERSATION WAS HELD WITH THE OTHER ACFT, WHICH PROVED TO BE FOREIGN ACR MLG Y. THE CONVERSATION REVEALED THAT MLG Y HAD BEEN CLRED INBND TO DSND TO 6,000 MSL WHILE LGT X HAD BEEN CLRED OUTBND TO CLB TO FL100.
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.