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Widebody transport came close to an light transport on departure. Less than standard separation occurred.
| Attributes | |
| ACN | 104263 |
| Time | |
| Date | 198902 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sju |
| State Reference | PR |
| Altitude | msl bound lower : 7000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : sju |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air taxi |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| ASRS Report | 104263 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was trying to tag air carrier widebody transport that had not automatic-acquired on departure. At about the time I tagged widebody transport ATC's controller plugged in at south control with me and asked why the limited data block XXXX code was at 7000'. I said I did not know and had not noticed it. He showed me a strip of light transport. Both the widebody transport and the light transport codes were 7000'. I asked widebody transport and light transport to identify. At that time light transport said he was deviating right of course to avoid wake turbulence from a widebody transport passing to his left. I then advised the satcs that I believed less than standard separation had occurred between widebody transport and light transport. The computer data extract later showed 1 1/2 mi sep at the same altitude, 7000'.
Original NASA ASRS Text
Title: WDB CAME CLOSE TO AN LTT ON DEP. LESS THAN STANDARD SEPARATION OCCURRED.
Narrative: I WAS TRYING TO TAG ACR WDB THAT HAD NOT AUTO-ACQUIRED ON DEP. AT ABOUT THE TIME I TAGGED WDB ATC'S CTLR PLUGGED IN AT S CTL WITH ME AND ASKED WHY THE LIMITED DATA BLOCK XXXX CODE WAS AT 7000'. I SAID I DID NOT KNOW AND HAD NOT NOTICED IT. HE SHOWED ME A STRIP OF LTT. BOTH THE WDB AND THE LTT CODES WERE 7000'. I ASKED WDB AND LTT TO IDENT. AT THAT TIME LTT SAID HE WAS DEVIATING RIGHT OF COURSE TO AVOID WAKE TURB FROM A WDB PASSING TO HIS LEFT. I THEN ADVISED THE SATCS THAT I BELIEVED LTSS HAD OCCURRED BTWN WDB AND LTT. THE COMPUTER DATA EXTRACT LATER SHOWED 1 1/2 MI SEP AT THE SAME ALT, 7000'.
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.