 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B757 aircraft asked by center controller if they have another aircraft in sight which they did. Controller cleared them to climb maintaining visual separation. TCASII gave alerts and though reporter flight crew knew about the other aircraft they were concerned that the other aircraft didn't know about them.
| Attributes | |
| ACN | 380720 |
| Time | |
| Date | 199709 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zny |
| State Reference | NY |
| Altitude | msl bound lower : 11000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zny |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | ATR Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 380720 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 380574 |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
We were level at 11000 ft. ZNY, ATC, asked if we had an air carrier B ATR at 2 O'clock position high in sight. We replied, 'traffic in sight.' ZNY then cleared us 'keep traffic in sight, cleared to climb to FL280 and proceed to parke intersection.' both captain and first officer had the ATR aircraft visually. I told the first officer to keep him in sight. I turned the aircraft away from the ATR and climbed through the ATR's altitude. We remained well clear of the ATR. As we were passing the ATR's altitude, we got the TCASII alert, 'traffic' followed by a TA/RA. We continued to climb away from the ATR and eventually leveled off at FL280. I realized once at FL280 that although we were always well clear that the ATR crew did not necessarily know that to be true. Indeed, if I got a TA/RA, they did as well. In the future, I will not be so quick to accept an ATC clearance that involves a 'maintain visual separation and climb to flight level xyz.' although we were confident there wasn't a traffic conflict. I believe we caused the ATR crew some unnecessary concern.
Original NASA ASRS Text
Title: B757 ACFT ASKED BY CTR CTLR IF THEY HAVE ANOTHER ACFT IN SIGHT WHICH THEY DID. CTLR CLRED THEM TO CLB MAINTAINING VISUAL SEPARATION. TCASII GAVE ALERTS AND THOUGH RPTR FLC KNEW ABOUT THE OTHER ACFT THEY WERE CONCERNED THAT THE OTHER ACFT DIDN'T KNOW ABOUT THEM.
Narrative: WE WERE LEVEL AT 11000 FT. ZNY, ATC, ASKED IF WE HAD AN ACR B ATR AT 2 O'CLOCK POS HIGH IN SIGHT. WE REPLIED, 'TFC IN SIGHT.' ZNY THEN CLRED US 'KEEP TFC IN SIGHT, CLRED TO CLB TO FL280 AND PROCEED TO PARKE INTXN.' BOTH CAPT AND FO HAD THE ATR ACFT VISUALLY. I TOLD THE FO TO KEEP HIM IN SIGHT. I TURNED THE ACFT AWAY FROM THE ATR AND CLBED THROUGH THE ATR'S ALT. WE REMAINED WELL CLR OF THE ATR. AS WE WERE PASSING THE ATR'S ALT, WE GOT THE TCASII ALERT, 'TFC' FOLLOWED BY A TA/RA. WE CONTINUED TO CLB AWAY FROM THE ATR AND EVENTUALLY LEVELED OFF AT FL280. I REALIZED ONCE AT FL280 THAT ALTHOUGH WE WERE ALWAYS WELL CLR THAT THE ATR CREW DID NOT NECESSARILY KNOW THAT TO BE TRUE. INDEED, IF I GOT A TA/RA, THEY DID AS WELL. IN THE FUTURE, I WILL NOT BE SO QUICK TO ACCEPT AN ATC CLRNC THAT INVOLVES A 'MAINTAIN VISUAL SEPARATION AND CLB TO FLT LEVEL XYZ.' ALTHOUGH WE WERE CONFIDENT THERE WASN'T A TFC CONFLICT. I BELIEVE WE CAUSED THE ATR CREW SOME UNNECESSARY CONCERN.
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.