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CL604 flight crew reported altitude and course deviations resulted from an encounter with severe turbulence associated with thunderstorm activity.
| Attributes | |
| ACN | 1565122 |
| Time | |
| Date | 201807 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZID.ARTCC |
| State Reference | IN |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | Direct |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 100 Flight Crew Total 14200 Flight Crew Type 2200 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 120 Flight Crew Total 1000 Flight Crew Type 130 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
Climbing out of FL330 we requested a deviation from indianapolis center right of course for a thunderstorm top. Denied deviation by center until FL350. Entered tops of thunderstorm. Could not maintain directional control; course; or altitude; due to severe turbulence. ATC questioned us if we had deviated from course and told us to expedite climb to FL350 in 30 seconds or less. We informed unable to comply and reported out of FL340 at ATC request. After being handed to the next center controller; indy center asked us to contact them after landing.
Original NASA ASRS Text
Title: CL604 flight crew reported altitude and course deviations resulted from an encounter with severe turbulence associated with thunderstorm activity.
Narrative: Climbing out of FL330 we requested a deviation from Indianapolis Center right of course for a thunderstorm top. Denied deviation by Center until FL350. Entered tops of thunderstorm. Could not maintain directional control; course; or altitude; due to severe turbulence. ATC questioned us if we had deviated from course and told us to expedite climb to FL350 in 30 seconds or less. We informed unable to comply and reported out of FL340 at ATC request. After being handed to the next Center Controller; Indy Center asked us to contact them after landing.
Data retrieved from NASA's ASRS site 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.