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A C182 encounters turbulence in IMC near mlb resulting in an altitude excursion required to avoid exceeding aircraft limiting airspeed.
| Attributes | |
| ACN | 664264 |
| Time | |
| Date | 200507 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mlb.airport |
| State Reference | FL |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Rain Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dab.tracon tower : hnl.tower |
| Operator | general aviation : personal |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : v3.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 35 flight time total : 350 flight time type : 40 |
| ASRS Report | 664264 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter : turbulence |
| Independent Detector | other controllerb other flight crewa |
| Resolutory Action | controller : issued advisory flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Navigational Facility |
| Primary Problem | Weather |
Narrative:
While flying IFR enroute around mlb in and around rain and other convective activity; our aircraft entered a cloud with significant updrafts. Attempting to maintain altitude by pitching down; airspeed was rapidly increasing and approaching vne -- even with reduced/minimal power setting. Before getting altitude stabilized; we had gained between 300 ft and 400 ft above the assigned altitude (6000 ft MSL). As I got the ascent under control; descending back to assigned altitude; ATC called and stated; 'maintain 6000 ft.' I acknowledged the transmission and stated that the updraft was unexpected and the altitude deviation necessary for the safety of the flight. No additional altitude deviations were necessary. The remainder of the flight; ATC could have been accommodating; given the current WX conditions. Callback conversation with reporter revealed the following information: the WX encounter was the only incident in an otherwise smooth flight that was in and out of instrument meteorological conditions.
Original NASA ASRS Text
Title: A C182 ENCOUNTERS TURB IN IMC NEAR MLB RESULTING IN AN ALT EXCURSION REQUIRED TO AVOID EXCEEDING ACFT LIMITING AIRSPD.
Narrative: WHILE FLYING IFR ENROUTE AROUND MLB IN AND AROUND RAIN AND OTHER CONVECTIVE ACTIVITY; OUR ACFT ENTERED A CLOUD WITH SIGNIFICANT UPDRAFTS. ATTEMPTING TO MAINTAIN ALT BY PITCHING DOWN; AIRSPD WAS RAPIDLY INCREASING AND APCHING VNE -- EVEN WITH REDUCED/MINIMAL POWER SETTING. BEFORE GETTING ALT STABILIZED; WE HAD GAINED BETWEEN 300 FT AND 400 FT ABOVE THE ASSIGNED ALT (6000 FT MSL). AS I GOT THE ASCENT UNDER CTL; DSNDING BACK TO ASSIGNED ALT; ATC CALLED AND STATED; 'MAINTAIN 6000 FT.' I ACKNOWLEDGED THE TRANSMISSION AND STATED THAT THE UPDRAFT WAS UNEXPECTED AND THE ALT DEV NECESSARY FOR THE SAFETY OF THE FLT. NO ADDITIONAL ALT DEVIATIONS WERE NECESSARY. THE REMAINDER OF THE FLT; ATC COULD HAVE BEEN ACCOMMODATING; GIVEN THE CURRENT WX CONDITIONS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE WX ENCOUNTER WAS THE ONLY INCIDENT IN AN OTHERWISE SMOOTH FLT THAT WAS IN AND OUT OF INSTRUMENT METEOROLOGICAL CONDITIONS.
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.