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ZDC controller described holding event when lowering altimeter settings precluded FL180 as usable; reporter failing to note same.
| Attributes | |
| ACN | 831147 |
| Time | |
| Date | 200904 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | SIE.VORTAC |
| State Reference | NJ |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Experience | Air Traffic Control Radar 6 |
| Events | |
| Anomaly | Other Usable Flight Levels |
Narrative:
Holding aircraft at FL180; FL190 for over 30 minutes; altimeter dropped 4 points leaving FL180 unusable. No alert via automated or through supervisor alerting to this. With our technology something should be in place; whether audible or visual.
Original NASA ASRS Text
Title: ZDC Controller described holding event when lowering altimeter settings precluded FL180 as usable; reporter failing to note same.
Narrative: Holding aircraft at FL180; FL190 for over 30 minutes; altimeter dropped 4 points leaving FL180 unusable. No alert via automated or through Supervisor alerting to this. With our technology something should be in place; whether audible or visual.
Data retrieved from NASA's ASRS site as of April 2012 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.