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Small transport pilot has a problem maintaining assigned altitude and frequency allocation as clear air turbulence encountered in associated thunderstorm activity.
| Attributes | |
| ACN | 183916 |
| Time | |
| Date | 199107 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ptn |
| State Reference | LA |
| Altitude | msl bound lower : 30000 msl bound upper : 3350 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : msy |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 51 flight time total : 15000 flight time type : 150 |
| ASRS Report | 183916 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited adverse environment none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
On a direct flight from ptn to new I had approval to deviate around thunderstorms, I encountered turbulence and could not hold altitude, with each hard bump the transceiver would change frequency making communications with approach control almost impossible. I have never had a radio do this before. This condition lasted approximately 3 mins.
Original NASA ASRS Text
Title: SMT PLT HAS A PROBLEM MAINTAINING ASSIGNED ALT AND FREQ ALLOCATION AS CLR AIR TURB ENCOUNTERED IN ASSOCIATED TSTM ACTIVITY.
Narrative: ON A DIRECT FLT FROM PTN TO NEW I HAD APPROVAL TO DEVIATE AROUND TSTMS, I ENCOUNTERED TURB AND COULD NOT HOLD ALT, WITH EACH HARD BUMP THE TRANSCEIVER WOULD CHANGE FREQ MAKING COMS WITH APCH CTL ALMOST IMPOSSIBLE. I HAVE NEVER HAD A RADIO DO THIS BEFORE. THIS CONDITION LASTED APPROX 3 MINS.
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.