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An M20K pilot reports a track deviation for thunderstorm only to enter IMC and encounter moderate to severe turbulence with an 800 ft altitude loss.
| Attributes | |
| ACN | 741991 |
| Time | |
| Date | 200706 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : gqo.vortac |
| State Reference | TN |
| Altitude | msl bound lower : 14000 msl bound upper : 16000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Turbulence Rain Ice |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : personal |
| Make Model Name | M-20 K (231) |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 43 flight time total : 650 flight time type : 419 |
| ASRS Report | 741991 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter : turbulence other anomaly other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Weather |
Narrative:
Being vectored around a cell buildup. Requested deviation left 20-30 degrees; then requested immediate climb to 16000 ft. Entered IMC and became subject to rapid convective activity of cell. This caused the aircraft to experience moderate to severe turbulence and ultimately a diving l-hand turn. Emerged from cloud with light; clear ice. Lost 800 ft; turned left from approximately 330 degree heading to 180 degrees.
Original NASA ASRS Text
Title: AN M20K PILOT REPORTS A TRACK DEV FOR TSTM ONLY TO ENTER IMC AND ENCOUNTER MODERATE TO SEVERE TURB WITH AN 800 FT ALT LOSS.
Narrative: BEING VECTORED AROUND A CELL BUILDUP. REQUESTED DEV L 20-30 DEGS; THEN REQUESTED IMMEDIATE CLB TO 16000 FT. ENTERED IMC AND BECAME SUBJECT TO RAPID CONVECTIVE ACTIVITY OF CELL. THIS CAUSED THE ACFT TO EXPERIENCE MODERATE TO SEVERE TURB AND ULTIMATELY A DIVING L-HAND TURN. EMERGED FROM CLOUD WITH LIGHT; CLR ICE. LOST 800 FT; TURNED L FROM APPROX 330 DEG HDG TO 180 DEGS.
Data retrieved from NASA's ASRS site as of January 2009 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.