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A ZBW ARTCC radar controller issues a visual climb to an MD88 that caused some concern from a B737 crew level at 16000 ft.
| Attributes | |
| ACN | 592120 |
| Time | |
| Date | 200308 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : bdl.vortac |
| State Reference | CT |
| Altitude | msl bound lower : 15000 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 |
| ASRS Report | 592120 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar other controllera other flight crewa other flight crewb other other : 3 |
| Resolutory Action | controller : separated traffic controller : issued new clearance |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
On climb out of pvd en route to atl, ZBW called traffic at our 1-2 O'clock position, level at 16000 ft (a B737). The B737 called us in sight and then we called him in sight. ATC then issued us a 'climb to FL230, maintain visual separation from the B737.' we acknowledged and, with the traffic greater than 5 mi from us, I initiated the climb. We were pulling ahead and climbing through his altitude as we were given a clearance direct to our next fix. The traffic passed, in my estimation, at least 1 mi behind us as we turned left to the next fix. We were climbing at approximately 3000 FPM and moving away from the traffic as we passed his altitude. The other aircraft made it clear that he was uncomfortable and unhappy with our clearance to climb through his altitude, but only after we had climbed. At no time did I feel there was a conflict.
Original NASA ASRS Text
Title: A ZBW ARTCC RADAR CTLR ISSUES A VISUAL CLB TO AN MD88 THAT CAUSED SOME CONCERN FROM A B737 CREW LEVEL AT 16000 FT.
Narrative: ON CLBOUT OF PVD ENRTE TO ATL, ZBW CALLED TFC AT OUR 1-2 O'CLOCK POS, LEVEL AT 16000 FT (A B737). THE B737 CALLED US IN SIGHT AND THEN WE CALLED HIM IN SIGHT. ATC THEN ISSUED US A 'CLB TO FL230, MAINTAIN VISUAL SEPARATION FROM THE B737.' WE ACKNOWLEDGED AND, WITH THE TFC GREATER THAN 5 MI FROM US, I INITIATED THE CLB. WE WERE PULLING AHEAD AND CLBING THROUGH HIS ALT AS WE WERE GIVEN A CLRNC DIRECT TO OUR NEXT FIX. THE TFC PASSED, IN MY ESTIMATION, AT LEAST 1 MI BEHIND US AS WE TURNED L TO THE NEXT FIX. WE WERE CLBING AT APPROX 3000 FPM AND MOVING AWAY FROM THE TFC AS WE PASSED HIS ALT. THE OTHER ACFT MADE IT CLR THAT HE WAS UNCOMFORTABLE AND UNHAPPY WITH OUR CLRNC TO CLB THROUGH HIS ALT, BUT ONLY AFTER WE HAD CLBED. AT NO TIME DID I FEEL THERE WAS A CONFLICT.
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.