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GLF2 flight crew initiate evasive maneuver to avoid another aircraft while descending from ZSU into tncm controled airspace.
| Attributes | |
| ACN | 534565 |
| Time | |
| Date | 200201 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : pjm.vor |
| State Reference | FO |
| Altitude | msl bound lower : 2500 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zsu.artcc tracon : tncm.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Gulfstream II |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : tncm.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 8000 flight time type : 1000 |
| ASRS Report | 534565 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 2700 flight time type : 100 |
| ASRS Report | 535473 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 30000 vertical : 2000 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation Inter Facility Coordination Failure |
Narrative:
On descent into tncm at approximately XA55Z, XXXX, ZSU cleared us to 15000 ft. When we were at 15000 ft, ZSU told us to contact juliana approach on 118.7. After contact with juliana, juliana cleared us to 2500 ft (we asked if that was 1500 ft or 2500 ft and juliana said 2500 ft) at which time we were cleared for visual approach to runway 9. The descent from 15000 ft to 2500 ft caused a conflict with an aircraft under san juan control, and we crossed over the top of this aircraft at approximately 2000 ft and 5 mi. I was requested to contact ZSU after we landed. ZSU advised me that juliana allowed us to descend too early, causing the conflict with other aircraft. Juliana advised san juan that aircraft Y advised of no restrs upon contact. But XXXX had no restrs other than cleared from 15000 ft to 2500 ft. Supplemental information from acn 535473: during the descent, we noticed an aircraft on TCASII 2000 ft below us. About 10 mi in front of the aircraft on TCASII we descended through his altitude. At that time juliana asked us to call ZSU again. ZSU told us that we were never cleared to descend below 15000 ft. I replied that we were handed off to juliana and they gave the clearance below 15000 ft. San juan said that we told juliana that we were 'unrestr,' then told us to call them once we were on the ground. We contacted juliana and asked them what they thought had happened. Juliana replied that we had checked in on the initial call at 15000 ft and no restrs. That statement is not true. I believe that juliana gave us a descent clearance by mistake and when san juan asked them about our descent, juliana tried to blame us.
Original NASA ASRS Text
Title: GLF2 FLC INITIATE EVASIVE MANEUVER TO AVOID ANOTHER ACFT WHILE DSNDING FROM ZSU INTO TNCM CTLED AIRSPACE.
Narrative: ON DSCNT INTO TNCM AT APPROX XA55Z, XXXX, ZSU CLRED US TO 15000 FT. WHEN WE WERE AT 15000 FT, ZSU TOLD US TO CONTACT JULIANA APCH ON 118.7. AFTER CONTACT WITH JULIANA, JULIANA CLRED US TO 2500 FT (WE ASKED IF THAT WAS 1500 FT OR 2500 FT AND JULIANA SAID 2500 FT) AT WHICH TIME WE WERE CLRED FOR VISUAL APCH TO RWY 9. THE DSCNT FROM 15000 FT TO 2500 FT CAUSED A CONFLICT WITH AN ACFT UNDER SAN JUAN CTL, AND WE CROSSED OVER THE TOP OF THIS ACFT AT APPROX 2000 FT AND 5 MI. I WAS REQUESTED TO CONTACT ZSU AFTER WE LANDED. ZSU ADVISED ME THAT JULIANA ALLOWED US TO DSND TOO EARLY, CAUSING THE CONFLICT WITH OTHER ACFT. JULIANA ADVISED SAN JUAN THAT ACFT Y ADVISED OF NO RESTRS UPON CONTACT. BUT XXXX HAD NO RESTRS OTHER THAN CLRED FROM 15000 FT TO 2500 FT. SUPPLEMENTAL INFO FROM ACN 535473: DURING THE DSCNT, WE NOTICED AN ACFT ON TCASII 2000 FT BELOW US. ABOUT 10 MI IN FRONT OF THE ACFT ON TCASII WE DSNDED THROUGH HIS ALT. AT THAT TIME JULIANA ASKED US TO CALL ZSU AGAIN. ZSU TOLD US THAT WE WERE NEVER CLRED TO DSND BELOW 15000 FT. I REPLIED THAT WE WERE HANDED OFF TO JULIANA AND THEY GAVE THE CLRNC BELOW 15000 FT. SAN JUAN SAID THAT WE TOLD JULIANA THAT WE WERE 'UNRESTR,' THEN TOLD US TO CALL THEM ONCE WE WERE ON THE GND. WE CONTACTED JULIANA AND ASKED THEM WHAT THEY THOUGHT HAD HAPPENED. JULIANA REPLIED THAT WE HAD CHKED IN ON THE INITIAL CALL AT 15000 FT AND NO RESTRS. THAT STATEMENT IS NOT TRUE. I BELIEVE THAT JULIANA GAVE US A DSCNT CLRNC BY MISTAKE AND WHEN SAN JUAN ASKED THEM ABOUT OUR DSCNT, JULIANA TRIED TO BLAME US.
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.