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B737 flight crew reported executing a go-around to run the procedure for an intermittent 'speed brake not armed' light.
| Attributes | |
| ACN | 1518359 |
| Time | |
| Date | 201802 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Speedbrake/Spoiler |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 332 Flight Crew Type 1500 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
We executed a go-around due to an [intermittent] speed brake do not arm light with the flaps past 2 degrees. With the gear down and flaps 15; the light would flicker on and off. On the go; we were given several altitude changes and heading changes. My first officer and I worked as a team. After referring to the landing performance [chart] with abnormal speed brakes and completing the proper QRH; we came back and landed with manual speed brake deployment. I wrote it up and maintenance deferred the auto speed brakes.it was a difficult scenario; due to the fact it was not a steady light. We should have discontinued the approach sooner; however; with flaps past 5 degrees the light extinguished. So I'm thinking a glitch; and we are good to go. But; as luck would have it; the light came back on at flaps 15 and continued to go on and off. I feel we did a good job with all the risk factors involved and my first officer; through good communication; helped me from going into the 'red'; [but] I was definitely in the 'yellow'.
Original NASA ASRS Text
Title: B737 flight crew reported executing a go-around to run the procedure for an intermittent 'Speed Brake Not Armed' light.
Narrative: We executed a go-around due to an [intermittent] Speed Brake Do Not Arm light with the flaps past 2 degrees. With the gear down and flaps 15; the light would flicker on and off. On the go; we were given several altitude changes and heading changes. My First Officer and I worked as a team. After referring to the landing performance [chart] with abnormal speed brakes and completing the proper QRH; we came back and landed with manual speed brake deployment. I wrote it up and Maintenance deferred the auto speed brakes.It was a difficult scenario; due to the fact it was not a steady light. We should have discontinued the approach sooner; however; with flaps past 5 degrees the light extinguished. So I'm thinking a glitch; and we are good to go. But; as luck would have it; the light came back on at flaps 15 and continued to go on and off. I feel we did a good job with all the risk factors involved and my First Officer; through good communication; helped me from going into the 'Red'; [but] I was definitely in the 'Yellow'.
Data retrieved from NASA's ASRS site 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.