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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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PIC of B737-300 elects to follow TCASII RA and performs an altitude excursion to avoid aircraft Y at 12 O'clock, 500 ft below. ARTCC radar controller had called traffic, albeit a bit late, just prior to the RA. Without the climb this would be termed an near midair collision.
| Attributes | |
| ACN | 376680 |
| Time | |
| Date | 199708 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : etx |
| State Reference | PA |
| Altitude | msl bound lower : 11000 msl bound upper : 11800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other cruise other cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 13000 flight time type : 580 |
| ASRS Report | 376680 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : exited adverse environment flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 9000 vertical : 300 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Level 11000 ft MSL. ZNY TA 'unknown traffic 12 O'clock, indicating 10500 ft.' we received traffic RA to climb. Vsi asked for climb (+1500 FPM). We disconnected autoplt and initiated climb and advised ATC of RA and of our climb. Climbed to 11800 ft. Then returned to 11000 ft. We never saw traffic.
Original NASA ASRS Text
Title: PIC OF B737-300 ELECTS TO FOLLOW TCASII RA AND PERFORMS AN ALT EXCURSION TO AVOID ACFT Y AT 12 O'CLOCK, 500 FT BELOW. ARTCC RADAR CTLR HAD CALLED TFC, ALBEIT A BIT LATE, JUST PRIOR TO THE RA. WITHOUT THE CLB THIS WOULD BE TERMED AN NMAC.
Narrative: LEVEL 11000 FT MSL. ZNY TA 'UNKNOWN TFC 12 O'CLOCK, INDICATING 10500 FT.' WE RECEIVED TFC RA TO CLB. VSI ASKED FOR CLB (+1500 FPM). WE DISCONNECTED AUTOPLT AND INITIATED CLB AND ADVISED ATC OF RA AND OF OUR CLB. CLBED TO 11800 FT. THEN RETURNED TO 11000 FT. WE NEVER SAW TFC.
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.