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B737 flight crew reported they got the stick shaker shortly after takeoff when the HUD commanded a steep pitch angle; probably because it was improperly set up.
| Attributes | |
| ACN | 1300068 |
| Time | |
| Date | 201510 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 198 Flight Crew Type 824 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 109 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
I was practicing a HUD takeoff. Upon throttle up to takeoff thrust; I remember depressing the takeoff/go-around (to/GA) button. However; I must not have depressed it completely as my HUD display commanded much too high of a pitch angle. As the airspeed bled off; both my first officer and I noticed; and mentioned that something wasn't right. I felt that the deck angle was far too high and the HUD was commanding an even higher pitch. I began to lower the nose. At the same time; my first officer told me to lower the nose. The stick shaker activated for a second or two after which the pitch angle was brought to an acceptable level. We then continued normal operations without the use of the HUD.a quick up and down crosscheck from HUD to the lower flight director at the first sign of an anomaly could've prevented stick shaker activation.
Original NASA ASRS Text
Title: B737 flight crew reported they got the stick shaker shortly after takeoff when the HUD commanded a steep pitch angle; probably because it was improperly set up.
Narrative: I was practicing a HUD Takeoff. Upon throttle up to takeoff thrust; I remember depressing the Takeoff/Go-around (TO/GA) button. However; I must not have depressed it completely as my HUD display commanded much too high of a pitch angle. As the airspeed bled off; both my FO and I noticed; and mentioned that something wasn't right. I felt that the deck angle was far too high and the HUD was commanding an even higher pitch. I began to lower the nose. At the same time; my FO told me to lower the nose. The stick shaker activated for a second or two after which the pitch angle was brought to an acceptable level. We then continued normal operations without the use of the HUD.A quick up and down crosscheck from HUD to the lower flight director at the first sign of an anomaly could've prevented stick shaker activation.
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.