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Air carrier large transport track heading deviation for WX avoidance. Transponder set to 7600 due communication problem with center.
| Attributes | |
| ACN | 179233 |
| Time | |
| Date | 199105 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bdf |
| State Reference | IL |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 200 flight time type : 1700 |
| ASRS Report | 179233 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter : weather non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : returned to intended course or assigned course flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
Narrative:
We requested a deviation for WX from center. ATC response was a frequency change to ZAU (this often occurs when requests are made and can lead to this scenario). There was no communication on the new frequency. Attempts were made and communications finally reestablished on the old frequency. Transponder was switched to code 7600 and a deviation from course was made for thunderstorm before communications were reestablished.
Original NASA ASRS Text
Title: ACR LGT TRACK HEADING DEVIATION FOR WX AVOIDANCE. TRANSPONDER SET TO 7600 DUE COM PROBLEM WITH CENTER.
Narrative: WE REQUESTED A DEVIATION FOR WX FROM CENTER. ATC RESPONSE WAS A FREQ CHANGE TO ZAU (THIS OFTEN OCCURS WHEN REQUESTS ARE MADE AND CAN LEAD TO THIS SCENARIO). THERE WAS NO COM ON THE NEW FREQ. ATTEMPTS WERE MADE AND COMS FINALLY REESTABLISHED ON THE OLD FREQ. XPONDER WAS SWITCHED TO CODE 7600 AND A DEVIATION FROM COURSE WAS MADE FOR TSTM BEFORE COMS WERE REESTABLISHED.
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.