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AA5 pilot reports inability to maintain 14;000 foot VFR on top clearance while crossing the sierras; west of hth; due to down drafts.
| Attributes | |
| ACN | 883497 |
| Time | |
| Date | 201004 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZOA.ARTCC |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Cheetah Tiger Traveler AA5 Series |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Vectors |
| Person 1 | |
| Function | Single Pilot |
| Qualification | Flight Crew Instrument Flight Crew Private |
| Experience | Flight Crew Last 90 Days 23 Flight Crew Total 350 Flight Crew Type 350 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Weather / Turbulence |
Narrative:
Unable to hold altitude assigned due to significant downdrafts and underpowered aircraft. Stall warning was sounding and groundspeed decreased to 66 knots over mountain crests. Needed lower which ATC [was] kind enough to allow in visual conditions; but altitude not appropriate for VFR on top heading west (13;500).
Original NASA ASRS Text
Title: AA5 pilot reports inability to maintain 14;000 foot VFR on top clearance while crossing the Sierras; west of HTH; due to down drafts.
Narrative: Unable to hold altitude assigned due to significant downdrafts and underpowered aircraft. Stall warning was sounding and groundspeed decreased to 66 knots over mountain crests. Needed lower which ATC [was] kind enough to allow in visual conditions; but altitude not appropriate for VFR on top heading west (13;500).
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.