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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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During arrival into toronto the flight encountered moderate rime ice, and moderate to severe turbulence. The controller noticed the reporter was off altitude 300 ft. The reporter requested and received a lower altitude where conditions improved.
| Attributes | |
| ACN | 334170 |
| Time | |
| Date | 199604 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ywt airport : yyz |
| State Reference | ON |
| Altitude | msl bound lower : 7700 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : yyz |
| Operator | common carrier : air taxi |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 117 flight time total : 11454 flight time type : 1475 |
| ASRS Report | 334170 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : exited adverse environment flight crew : returned to intended course or assigned course other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
During our arrival phase to toronto, we were assigned 8000 ft. While in the vicinity of the ywt VOR we encountered moderate rime icing and moderate and occasionally severe turbulence. During this period precise altitude control became impossible and at one point we lost 300 ft. The controller advised us we were showing 7700 ft on his screen readout and restated the local altimeter setting. We immediately returned to 8000 ft. I reported the icing and turbulence conditions we encountered to ATC and when traffic permitted we were assigned a lower altitude where conditions of flight improved.
Original NASA ASRS Text
Title: DURING ARR INTO TORONTO THE FLT ENCOUNTERED MODERATE RIME ICE, AND MODERATE TO SEVERE TURB. THE CTLR NOTICED THE RPTR WAS OFF ALT 300 FT. THE RPTR REQUESTED AND RECEIVED A LOWER ALT WHERE CONDITIONS IMPROVED.
Narrative: DURING OUR ARR PHASE TO TORONTO, WE WERE ASSIGNED 8000 FT. WHILE IN THE VICINITY OF THE YWT VOR WE ENCOUNTERED MODERATE RIME ICING AND MODERATE AND OCCASIONALLY SEVERE TURB. DURING THIS PERIOD PRECISE ALT CTL BECAME IMPOSSIBLE AND AT ONE POINT WE LOST 300 FT. THE CTLR ADVISED US WE WERE SHOWING 7700 FT ON HIS SCREEN READOUT AND RESTATED THE LCL ALTIMETER SETTING. WE IMMEDIATELY RETURNED TO 8000 FT. I RPTED THE ICING AND TURB CONDITIONS WE ENCOUNTERED TO ATC AND WHEN TFC PERMITTED WE WERE ASSIGNED A LOWER ALT WHERE CONDITIONS OF FLT IMPROVED.
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.