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An air carrier is improperly dispatched. 2 alternates were required by far and company operations specifications. One was listed.
| Attributes | |
| ACN | 494610 |
| Time | |
| Date | 200011 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : yyc.airport |
| State Reference | AB |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Snow |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : parked other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : multi engine |
| Experience | flight time last 90 days : 200 flight time total : 16000 flight time type : 5800 |
| ASRS Report | 494610 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7500 flight time type : 4500 |
| ASRS Report | 493889 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : company policies non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Company Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
WX at calgary had an intermittent condition of 1/2 SM visibility due to snow. Edmonton was alternate. Probability of 30% that edmonton might be low visibility also. We should have had 2 alternates but allowed ourselves to be dispatched with 1 alternate. Continually changing company regulations and difficulty reading paragraph led to confusion. Dispatch and crew at fault.
Original NASA ASRS Text
Title: AN ACR IS IMPROPERLY DISPATCHED. 2 ALTERNATES WERE REQUIRED BY FAR AND COMPANY OPS SPECS. ONE WAS LISTED.
Narrative: WX AT CALGARY HAD AN INTERMITTENT CONDITION OF 1/2 SM VISIBILITY DUE TO SNOW. EDMONTON WAS ALTERNATE. PROBABILITY OF 30% THAT EDMONTON MIGHT BE LOW VISIBILITY ALSO. WE SHOULD HAVE HAD 2 ALTERNATES BUT ALLOWED OURSELVES TO BE DISPATCHED WITH 1 ALTERNATE. CONTINUALLY CHANGING COMPANY REGS AND DIFFICULTY READING PARAGRAPH LED TO CONFUSION. DISPATCH AND CREW AT FAULT.
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.