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B767-300 stick shaker activated during climbout. The warning was considered erroneous; and the flight continued.
| Attributes | |
| ACN | 757715 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phl.airport |
| State Reference | PA |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 104 flight time total : 12700 flight time type : 5470 |
| ASRS Report | 757715 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : overcame equipment problem |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
We leveled off 10000 ft with flaps 1 degree at approximately 230 KTS; assigned. ATC then cleared us to 12000 ft and 250 KTS. We activated VNAV and called flaps up and started a gentle pitch up and the stick shaker activated for about 2 seconds. Then when level at 12000 ft and 250 KTS clean; we were given a higher altitude and started a climb the same way and the stick shaker again sounded for approximately 2 seconds. The shaker only occurred (in both events) during the initial pitch up. The shaker stopped prior to reaching the target climb pitch attitude appropriate for a 250 KT climb. We spoke with a system operations pilot immediately and together determined that the flight could continue safely. The mechanic in ZZZZ checked the shaker system from the boeing maintenance manual and could find no problems. The shaker never activated again on this or the subsequent flight to ZZZ1. We requested that ZZZZ operations weigh the load before they emptied the containers as we thought that since the aircraft had no problems that maybe the weight and balance was not correct.
Original NASA ASRS Text
Title: B767-300 STICK SHAKER ACTIVATED DURING CLIMBOUT. THE WARNING WAS CONSIDERED ERRONEOUS; AND THE FLT CONTINUED.
Narrative: WE LEVELED OFF 10000 FT WITH FLAPS 1 DEG AT APPROX 230 KTS; ASSIGNED. ATC THEN CLRED US TO 12000 FT AND 250 KTS. WE ACTIVATED VNAV AND CALLED FLAPS UP AND STARTED A GENTLE PITCH UP AND THE STICK SHAKER ACTIVATED FOR ABOUT 2 SECONDS. THEN WHEN LEVEL AT 12000 FT AND 250 KTS CLEAN; WE WERE GIVEN A HIGHER ALT AND STARTED A CLB THE SAME WAY AND THE STICK SHAKER AGAIN SOUNDED FOR APPROX 2 SECONDS. THE SHAKER ONLY OCCURRED (IN BOTH EVENTS) DURING THE INITIAL PITCH UP. THE SHAKER STOPPED PRIOR TO REACHING THE TARGET CLB PITCH ATTITUDE APPROPRIATE FOR A 250 KT CLB. WE SPOKE WITH A SYS OPS PLT IMMEDIATELY AND TOGETHER DETERMINED THAT THE FLT COULD CONTINUE SAFELY. THE MECH IN ZZZZ CHKED THE SHAKER SYS FROM THE BOEING MAINT MANUAL AND COULD FIND NO PROBS. THE SHAKER NEVER ACTIVATED AGAIN ON THIS OR THE SUBSEQUENT FLT TO ZZZ1. WE REQUESTED THAT ZZZZ OPS WEIGH THE LOAD BEFORE THEY EMPTIED THE CONTAINERS AS WE THOUGHT THAT SINCE THE ACFT HAD NO PROBS THAT MAYBE THE WT AND BAL WAS NOT CORRECT.
Data retrieved from NASA's ASRS site as of January 2009 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.