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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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B727 cargo flight on taxi out discovered windshield overheat. Discussed with dispatcher and agreed ok to continue since thought no icing conditions forecast for route. Discovered on arrival geg icing was forecast. Did not encounter any icing.
| Attributes | |
| ACN | 356858 |
| Time | |
| Date | 199612 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : yyc |
| State Reference | AB |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : holding ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 40 flight time total : 5000 flight time type : 1500 |
| ASRS Report | 356858 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : far non adherence : published procedure |
| 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 | other |
Narrative:
The captain's windshield overheat illuminated taxiing out. Reset switch after 5 mins cooling was no help. We had our ramp call our specialist (dispatcher) and ask him for his initials and time stamp for a re-release with our window (captain) inoperative. The MEL said we could not go into known or forecast icing conditions. The WX that we had from our preflight did not show any icing forecast for our calgary to spokane flight. However, our normal printout of WX only has sequences, forecasts, NOTAMS and sigmets. Our dispatch specialist released us with a time and initials. I assumed that he checked all sources and did not find any forecast or known icing conditions on our route. Our flight was uneventful, with no icing observed. On arrival at spokane, in checking the WX for our next leg, I found that there was an area forecast for the spokane area that forecast light to moderate icing. The dispatch specialist either assumed we knew the WX and wanted to violate FARS, so he released us or he didn't check the WX. Lesson learned: I should be more specific with my requests and never assume.
Original NASA ASRS Text
Title: B727 CARGO FLT ON TAXI OUT DISCOVERED WINDSHIELD OVERHEAT. DISCUSSED WITH DISPATCHER AND AGREED OK TO CONTINUE SINCE THOUGHT NO ICING CONDITIONS FORECAST FOR RTE. DISCOVERED ON ARR GEG ICING WAS FORECAST. DID NOT ENCOUNTER ANY ICING.
Narrative: THE CAPT'S WINDSHIELD OVERHEAT ILLUMINATED TAXIING OUT. RESET SWITCH AFTER 5 MINS COOLING WAS NO HELP. WE HAD OUR RAMP CALL OUR SPECIALIST (DISPATCHER) AND ASK HIM FOR HIS INITIALS AND TIME STAMP FOR A RE-RELEASE WITH OUR WINDOW (CAPT) INOP. THE MEL SAID WE COULD NOT GO INTO KNOWN OR FORECAST ICING CONDITIONS. THE WX THAT WE HAD FROM OUR PREFLT DID NOT SHOW ANY ICING FORECAST FOR OUR CALGARY TO SPOKANE FLT. HOWEVER, OUR NORMAL PRINTOUT OF WX ONLY HAS SEQUENCES, FORECASTS, NOTAMS AND SIGMETS. OUR DISPATCH SPECIALIST RELEASED US WITH A TIME AND INITIALS. I ASSUMED THAT HE CHKED ALL SOURCES AND DID NOT FIND ANY FORECAST OR KNOWN ICING CONDITIONS ON OUR RTE. OUR FLT WAS UNEVENTFUL, WITH NO ICING OBSERVED. ON ARR AT SPOKANE, IN CHKING THE WX FOR OUR NEXT LEG, I FOUND THAT THERE WAS AN AREA FORECAST FOR THE SPOKANE AREA THAT FORECAST LIGHT TO MODERATE ICING. THE DISPATCH SPECIALIST EITHER ASSUMED WE KNEW THE WX AND WANTED TO VIOLATE FARS, SO HE RELEASED US OR HE DIDN'T CHK THE WX. LESSON LEARNED: I SHOULD BE MORE SPECIFIC WITH MY REQUESTS AND NEVER ASSUME.
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.