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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier B727 at FL350 got an 'RA' from an air carrier airbus 300 ft below them. The B727 flight crew took evasive action by climbing to FL355. The airbus continued its descent.
| Attributes | |
| ACN | 333209 |
| Time | |
| Date | 199604 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cro |
| State Reference | FO |
| Altitude | msl bound lower : 35000 msl bound upper : 35500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : tncf |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Airbus Industrie Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 333209 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 333414 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Departed cur, tracking A315 with a clearance to FL280. Checked on with cur control with our first reporting point, dusan estimate of XA23Z. Cur control instructed us to intercept 022 degree radial off beatrix. Cleared us to FL350 and upon reaching FL310, cleared direct veska. At FL310, proceeded direct veska. Soon after we leveled off at FL350, received TCASII TA. Traffic displayed was 1 O'clock 300 ft below. Immediately thereafter, at XA28Z a TCASII RA was received and complied with. Climbed to FL355 with positive identify on an airbus passing from right to left and descending. When aircraft was no longer a factor we returned to FL350. Throughout the incident, cur control was advised of our actions.
Original NASA ASRS Text
Title: AN ACR B727 AT FL350 GOT AN 'RA' FROM AN ACR AIRBUS 300 FT BELOW THEM. THE B727 FLC TOOK EVASIVE ACTION BY CLBING TO FL355. THE AIRBUS CONTINUED ITS DSCNT.
Narrative: DEPARTED CUR, TRACKING A315 WITH A CLRNC TO FL280. CHKED ON WITH CUR CTL WITH OUR FIRST RPTING POINT, DUSAN ESTIMATE OF XA23Z. CUR CTL INSTRUCTED US TO INTERCEPT 022 DEG RADIAL OFF BEATRIX. CLRED US TO FL350 AND UPON REACHING FL310, CLRED DIRECT VESKA. AT FL310, PROCEEDED DIRECT VESKA. SOON AFTER WE LEVELED OFF AT FL350, RECEIVED TCASII TA. TFC DISPLAYED WAS 1 O'CLOCK 300 FT BELOW. IMMEDIATELY THEREAFTER, AT XA28Z A TCASII RA WAS RECEIVED AND COMPLIED WITH. CLBED TO FL355 WITH POSITIVE IDENT ON AN AIRBUS PASSING FROM R TO L AND DSNDING. WHEN ACFT WAS NO LONGER A FACTOR WE RETURNED TO FL350. THROUGHOUT THE INCIDENT, CUR CTL WAS ADVISED OF OUR ACTIONS.
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.