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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Foreign air carrier possible uncoordinated/unauthorized penetration of adjacent center airspace had conflict with air carrier X. Possible less than standard separation. Near midair collision.
| Attributes | |
| ACN | 230671 |
| Time | |
| Date | 199211 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sju |
| State Reference | PR |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : mjzs |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 7 |
| ASRS Report | 230671 |
| Person 2 | |
| Affiliation | government : faa |
| Function | oversight : supervisor |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 500 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X took off from san juan international climbing to FL310. Asked controller if he had traffic. Controller said no. Air carrier X reported leaving FL282 to controller. Controller saw an unidented target merge with air carrier X at FL290 unverified. Air carrier X then stated it was a foreign air carrier and 'it was so close I could read the tail numbers.' the controller turned this in to the supervisor and there was an investigation. The finding was there was not a loss of separation. 7110.65 non radar separation is 1000 ft below FL290 and 2000 ft above and 20 DME if and only if you are in direct communications with both aircraft. If no communications it is the appropriate vertical separation or 10 mins in domestic airspace. I do not know how based on a radar data extraction they (san juan cerap quality assurance) came up that there was not a loss of separation.
Original NASA ASRS Text
Title: FOREIGN ACR POSSIBLE UNCOORDINATED/UNAUTH PENETRATION OF ADJACENT CTR AIRSPACE HAD CONFLICT WITH ACR X. POSSIBLE LTSS. NMAC.
Narrative: ACR X TOOK OFF FROM SAN JUAN INTL CLBING TO FL310. ASKED CTLR IF HE HAD TFC. CTLR SAID NO. ACR X RPTED LEAVING FL282 TO CTLR. CTLR SAW AN UNIDENTED TARGET MERGE WITH ACR X AT FL290 UNVERIFIED. ACR X THEN STATED IT WAS A FOREIGN ACR AND 'IT WAS SO CLOSE I COULD READ THE TAIL NUMBERS.' THE CTLR TURNED THIS IN TO THE SUPVR AND THERE WAS AN INVESTIGATION. THE FINDING WAS THERE WAS NOT A LOSS OF SEPARATION. 7110.65 NON RADAR SEPARATION IS 1000 FT BELOW FL290 AND 2000 FT ABOVE AND 20 DME IF AND ONLY IF YOU ARE IN DIRECT COMS WITH BOTH ACFT. IF NO COMS IT IS THE APPROPRIATE VERT SEPARATION OR 10 MINS IN DOMESTIC AIRSPACE. I DO NOT KNOW HOW BASED ON A RADAR DATA EXTRACTION THEY (SAN JUAN CERAP QUALITY ASSURANCE) CAME UP THAT THERE WAS NOT A LOSS OF SEPARATION.
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.