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Air carrier X climb through occupied altitude had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 211463 |
| Time | |
| Date | 199206 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ric |
| State Reference | VA |
| Altitude | msl bound lower : 25000 msl bound upper : 25000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 1 |
| ASRS Report | 211463 |
| 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 | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X, departure off orf, was cleared to FL260. Air carrier Y checked on at FL270, subsequently cleared to FL250. My intent was to reclr air carrier X, but clearance never given despite FL240 entered into data block and written on strip. My attention being diverted to other aircraft, my scan of FL240 in the data block of air carrier X misled me to believe air carrier X was assigned FL240.
Original NASA ASRS Text
Title: ACR X CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ACR X, DEP OFF ORF, WAS CLRED TO FL260. ACR Y CHKED ON AT FL270, SUBSEQUENTLY CLRED TO FL250. MY INTENT WAS TO RECLR ACR X, BUT CLRNC NEVER GIVEN DESPITE FL240 ENTERED INTO DATA BLOCK AND WRITTEN ON STRIP. MY ATTN BEING DIVERTED TO OTHER ACFT, MY SCAN OF FL240 IN THE DATA BLOCK OF ACR X MISLED ME TO BELIEVE ACR X WAS ASSIGNED FL240.
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.