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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier X climbed through occupied altitude had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 263815 |
| Time | |
| Date | 199402 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : orf |
| State Reference | VA |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| 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 |
| Route In Use | enroute : direct |
| 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 |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller non radar : 2 controller radar : 1 |
| ASRS Report | 263815 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was converging with aircraft at FL310. I planned to descend air carrier X to FL280. Air carrier X then requested FL350 and ride reports at FL280 and FL350. After coordination with diw high sector I issued clearance to FL350. Later I instructed air carrier X to remain at FL310 which his mode C indicated he was still at. After issuing this 3 times and no response from the pilot, I turned air carrier Y that was leveled at FL330.
Original NASA ASRS Text
Title: ACR X CLBED THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ACR X WAS CONVERGING WITH ACFT AT FL310. I PLANNED TO DSND ACR X TO FL280. ACR X THEN REQUESTED FL350 AND RIDE RPTS AT FL280 AND FL350. AFTER COORD WITH DIW HIGH SECTOR I ISSUED CLRNC TO FL350. LATER I INSTRUCTED ACR X TO REMAIN AT FL310 WHICH HIS MODE C INDICATED HE WAS STILL AT. AFTER ISSUING THIS 3 TIMES AND NO RESPONSE FROM THE PLT, I TURNED ACR Y THAT WAS LEVELED AT FL330.
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.