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Flight crew received AWOS reading of 1/4 mi visibility and took off. Allegedly AWOS changed visibility to less than 1/4 before they took off.
| Attributes | |
| ACN | 195031 |
| Time | |
| Date | 199111 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pib |
| State Reference | MS |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| 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 Other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 3800 flight time type : 300 |
| ASRS Report | 195031 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | inflight encounter : weather non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| Airport | other physical facility |
Narrative:
On taxi my first officer and I listened to the AWOS system to attain current visibility. The AWOS reported 1/4 mi. We then taxied to the active runway (36). We attained our clearance from mccomb FSS and proceeded to takeoff. When we called back to company another pilot on the ground told us to listen to AWOS. It then was reporting less then 1/4. It is not known to us if we took off below mins. We took of 5 mins after we listened to AWOS. The current sa WX strip said 1/4. Question: are pilots responsible for up to the second updating on AWOS? For takeoff? For landing? AWOS is new and undefined. Is it practical to listen to AWOS during critical phases of flight?
Original NASA ASRS Text
Title: FLC RECEIVED AWOS READING OF 1/4 MI VISIBILITY AND TOOK OFF. ALLEGEDLY AWOS CHANGED VISIBILITY TO LESS THAN 1/4 BEFORE THEY TOOK OFF.
Narrative: ON TAXI MY FO AND I LISTENED TO THE AWOS SYS TO ATTAIN CURRENT VISIBILITY. THE AWOS RPTED 1/4 MI. WE THEN TAXIED TO THE ACTIVE RWY (36). WE ATTAINED OUR CLRNC FROM MCCOMB FSS AND PROCEEDED TO TKOF. WHEN WE CALLED BACK TO COMPANY ANOTHER PLT ON THE GND TOLD US TO LISTEN TO AWOS. IT THEN WAS RPTING LESS THEN 1/4. IT IS NOT KNOWN TO US IF WE TOOK OFF BELOW MINS. WE TOOK OF 5 MINS AFTER WE LISTENED TO AWOS. THE CURRENT SA WX STRIP SAID 1/4. QUESTION: ARE PLTS RESPONSIBLE FOR UP TO THE SECOND UPDATING ON AWOS? FOR TKOF? FOR LNDG? AWOS IS NEW AND UNDEFINED. IS IT PRACTICAL TO LISTEN TO AWOS DURING CRITICAL PHASES OF FLT?
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.