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Light transport at 15000 IMC light precipitation, light rime, no static buildup, radio just stopped. After leaving the rain area radio communication was re-establish.
| Attributes | |
| ACN | 107063 |
| Time | |
| Date | 198903 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mcl |
| State Reference | TX |
| Altitude | msl bound lower : 15000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zfw |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 10000 flight time type : 1500 |
| ASRS Report | 107063 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
WX related loss of communication continue on light transport. Flight was level 15000 MSL, outside air temperature minus 7 degrees celsuis, IMC with light precipitation, light rime. No warning signal of static buildup on headset this time. Radio communication just stopped. When no reception had been heard for several minutes on a normally busy center frequency, we began to call with no avail. Several other known frequency's were tried, but it was only after we left the rain/ice area that communication was re-established. It appears that the light transport does not allow static buildup to properly escape the airframe. An ice/rain combination renders all antenna's completely useless.
Original NASA ASRS Text
Title: LTT AT 15000 IMC LIGHT PRECIPITATION, LIGHT RIME, NO STATIC BUILDUP, RADIO JUST STOPPED. AFTER LEAVING THE RAIN AREA RADIO COM WAS RE-ESTABLISH.
Narrative: WX RELATED LOSS OF COM CONTINUE ON LTT. FLT WAS LEVEL 15000 MSL, OUTSIDE AIR TEMP MINUS 7 DEGS CELSUIS, IMC WITH LIGHT PRECIP, LIGHT RIME. NO WARNING SIGNAL OF STATIC BUILDUP ON HEADSET THIS TIME. RADIO COM JUST STOPPED. WHEN NO RECEPTION HAD BEEN HEARD FOR SEVERAL MINUTES ON A NORMALLY BUSY CENTER FREQ, WE BEGAN TO CALL WITH NO AVAIL. SEVERAL OTHER KNOWN FREQ'S WERE TRIED, BUT IT WAS ONLY AFTER WE LEFT THE RAIN/ICE AREA THAT COM WAS RE-ESTABLISHED. IT APPEARS THAT THE LTT DOES NOT ALLOW STATIC BUILDUP TO PROPERLY ESCAPE THE AIRFRAME. AN ICE/RAIN COMBINATION RENDERS ALL ANTENNA'S COMPLETELY USELESS.
Data retrieved from NASA's ASRS site as of August 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.