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B737 first officer reports turning on engine anti-ice prior to taxi with proper light indications. Prior to takeoff the number 1 engine light is noted to be out but tai is indicated on for both engines and the takeoff is continued. Once airborne the number 1 engine anti-ice circuit breaker is found tripped and successfully reset. A question arrises as to whether the number 1 anti-ice was actually on.
| Attributes | |
| ACN | 929419 |
| Time | |
| Date | 201101 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Intake Ice System |
| Person 1 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 250 Flight Crew Type 5000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence |
Narrative:
I turned the engine anti-ice on before taxiing out. The lights went from bright to dim; all was normal. Before taking off; I checked the engine anti-ice; the light for the number one engine anti-ice was very dark. I recycled it and it did not light up at all; but the 'tai' appeared above the engine readings. I assumed the light was burned out as 'tai' appeared on engine read out. We took off. I switched the lights in the air; but that did not work. I went into the checklist and switched both engine anti-ice indicators; it was definitely the left side that was out. I checked the circuit breakers and found the number one engine and left wing control circuit breaker popped. The left cowl valve circuit breaker was still in. The circuit breaker was reset and stayed in with no problem. I asked maintenance whether we had; or did not have; anti-icing in the number one engine with that particular circuit breaker popped. He did not know the answer. So; I am not sure whether we had anti-icing going through the weather or not.
Original NASA ASRS Text
Title: B737 First Officer reports turning on engine anti-ice prior to taxi with proper light indications. Prior to takeoff the number 1 engine light is noted to be out but TAI is indicated on for both engines and the takeoff is continued. Once airborne the number 1 engine anti-ice circuit breaker is found tripped and successfully reset. A question arrises as to whether the number 1 anti-ice was actually on.
Narrative: I turned the engine anti-ice on before taxiing out. The lights went from bright to dim; all was normal. Before taking off; I checked the engine anti-ice; the light for the number one engine anti-ice was very dark. I recycled it and it did not light up at all; but the 'TAI' appeared above the engine readings. I assumed the light was burned out as 'TAI' appeared on engine read out. We took off. I switched the lights in the air; but that did not work. I went into the checklist and switched both engine anti-ice indicators; it was definitely the left side that was out. I checked the circuit breakers and found the number one engine and left wing control circuit breaker popped. The left cowl valve circuit breaker was still in. The circuit breaker was reset and stayed in with no problem. I asked Maintenance whether we had; or did not have; anti-icing in the number one engine with that particular circuit breaker popped. He did not know the answer. So; I am not sure whether we had anti-icing going through the weather or not.
Data retrieved from NASA's ASRS site as of April 2012 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.