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Heavy widebody transport aircraft on departure procedure gets stick shaker as captain banks too much, too soon, at too low an airspeed while reducing power for climb as flaps are retracting to '0' degrees.
| Attributes | |
| ACN | 251254 |
| Time | |
| Date | 199309 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : kad airport : roah |
| State Reference | FO |
| Altitude | agl bound lower : 2100 agl bound upper : 2100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude climbout : initial cruise other |
| Route In Use | departure other departure sid : sid enroute airway : roah |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 9850 flight time type : 2600 |
| ASRS Report | 251254 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Takeoff conditions 86 degrees F, light wind, daylight, clear/partly cloudy, and very humid. Takeoff gross weight approximately 775000 pounds using derated, but full takeoff power. Widebody transport with xy engines. While turning left on SID a stick shaker flight regime was entered. (28 degree turn angle, 8 degrees nose up, flaps retracting from 1 degree to up, climb power being set.) airspeed was approximately 20 KTS below vzf. A slight pitch reduction and 2-3 degrees bank reduction stopped stick shaker. A lesser bank angle or delayed flap retraction would have eliminated problem. Reducing takeoff thrust to climb thrust didn't help the situation either. Entire duration of problem -- about 3 seconds.
Original NASA ASRS Text
Title: HVY WDB ACFT ON DEP PROC GETS STICK SHAKER AS CAPT BANKS TOO MUCH, TOO SOON, AT TOO LOW AN AIRSPD WHILE REDUCING PWR FOR CLB AS FLAPS ARE RETRACTING TO '0' DEGS.
Narrative: TKOF CONDITIONS 86 DEGS F, LIGHT WIND, DAYLIGHT, CLR/PARTLY CLOUDY, AND VERY HUMID. TKOF GROSS WT APPROX 775000 LBS USING DERATED, BUT FULL TKOF PWR. WDB WITH XY ENGS. WHILE TURNING L ON SID A STICK SHAKER FLT REGIME WAS ENTERED. (28 DEG TURN ANGLE, 8 DEGS NOSE UP, FLAPS RETRACTING FROM 1 DEG TO UP, CLB PWR BEING SET.) AIRSPD WAS APPROX 20 KTS BELOW VZF. A SLIGHT PITCH REDUCTION AND 2-3 DEGS BANK REDUCTION STOPPED STICK SHAKER. A LESSER BANK ANGLE OR DELAYED FLAP RETRACTION WOULD HAVE ELIMINATED PROB. REDUCING TKOF THRUST TO CLB THRUST DIDN'T HELP THE SIT EITHER. ENTIRE DURATION OF PROB -- ABOUT 3 SECONDS.
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.