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Enroute controller described a potential conflict event when traffic with pressurisation issues started a descent into other IFR traffic; the reporter noting an earlier pilot emergency declaration would have been helpful.
| Attributes | |
| ACN | 1061773 |
| Time | |
| Date | 201301 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Person 2 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
A learjet at FL310 south eastbound requested lower altitude. Radar called traffic at 11 o'clock and seven miles westbound at FL300; lower when you're clear. The learjet responded we can't hold altitude for pressurization; need a descent and turn. Radar issued heading 090 and descend to FL240; we then coordinated lower with sector 63. Aircraft issued descent to 15;000 and switched to 133.95.
Original NASA ASRS Text
Title: Enroute Controller described a potential conflict event when traffic with pressurisation issues started a descent into other IFR traffic; the reporter noting an earlier pilot emergency declaration would have been helpful.
Narrative: A Learjet at FL310 south eastbound requested lower altitude. RADAR called traffic at 11 o'clock and seven miles Westbound at FL300; lower when you're clear. The Learjet responded we can't hold altitude for pressurization; need a descent and turn. RADAR issued heading 090 and descend to FL240; we then coordinated lower with Sector 63. Aircraft issued descent to 15;000 and switched to 133.95.
Data retrieved from NASA's ASRS site as of July 2013 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.