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A climbing air carrier aircraft, expediting through and out of FL190 (FL198) is told to descend back to his original altitude of 17000 ft due to opposite direction traffic at FL190. PIC complies, unaware of the traffic until TCASII TA gives him the picture.
| Attributes | |
| ACN | 350710 |
| Time | |
| Date | 199610 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : iad |
| State Reference | VA |
| Altitude | msl bound lower : 17000 msl bound upper : 19800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other descent other |
| Route In Use | enroute : on vectors enroute airway : j149 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 1000 |
| ASRS Report | 350710 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence other other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 60000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation other |
Narrative:
After takeoff runway 19L iad, vectors to J149. Level 17000 ft. Reclred to climb FL240, expedite through FL190. Climbing through FL198, got immediate reclrnc to descend to 17000 ft. Initiated descent and got TA. Visual and TCASII of a flight at FL190. No evasive action required. No harm, no foul.
Original NASA ASRS Text
Title: A CLBING ACR ACFT, EXPEDITING THROUGH AND OUT OF FL190 (FL198) IS TOLD TO DSND BACK TO HIS ORIGINAL ALT OF 17000 FT DUE TO OPPOSITE DIRECTION TFC AT FL190. PIC COMPLIES, UNAWARE OF THE TFC UNTIL TCASII TA GIVES HIM THE PICTURE.
Narrative: AFTER TKOF RWY 19L IAD, VECTORS TO J149. LEVEL 17000 FT. RECLRED TO CLB FL240, EXPEDITE THROUGH FL190. CLBING THROUGH FL198, GOT IMMEDIATE RECLRNC TO DSND TO 17000 FT. INITIATED DSCNT AND GOT TA. VISUAL AND TCASII OF A FLT AT FL190. NO EVASIVE ACTION REQUIRED. NO HARM, NO FOUL.
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.