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A B757-200 on takeoff climb had the #2 engine thrust lever jam causing asymmetrical thrust incurring a flap overspd by 20 KTS.
| Attributes | |
| ACN | 566050 |
| Time | |
| Date | 200211 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ewr.airport |
| State Reference | US |
| Altitude | agl single value : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ewr.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 14000 flight time type : 1600 |
| ASRS Report | 566050 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Weather |
| Primary Problem | Aircraft |
Narrative:
Upon initial power reduction after takeoff on runway 4L, flaps 5 degrees was selected, flight level change and set top bug was executed on MCP. Right throttle remained at takeoff thrust (full power takeoff due to engine anti-ice on) autothrottles were disconnected, and an attempt was made to manually reduce the right throttle. Right throttle remained jammed at takeoff power, a force of approximately 25-50 pounds was required to break loose the throttle and power was reduced. PF's attention was diverted to asymmetrical thrust situation and mandatory ATC leveloff altitude of 2500 ft MSL, resulting in flaps 5 degrees overspd by approximately 20 KTS.
Original NASA ASRS Text
Title: A B757-200 ON TKOF CLB HAD THE #2 ENG THRUST LEVER JAM CAUSING ASYMMETRICAL THRUST INCURRING A FLAP OVERSPD BY 20 KTS.
Narrative: UPON INITIAL PWR REDUCTION AFTER TKOF ON RWY 4L, FLAPS 5 DEGS WAS SELECTED, FLT LEVEL CHANGE AND SET TOP BUG WAS EXECUTED ON MCP. R THROTTLE REMAINED AT TKOF THRUST (FULL PWR TKOF DUE TO ENG ANTI-ICE ON) AUTOTHROTTLES WERE DISCONNECTED, AND AN ATTEMPT WAS MADE TO MANUALLY REDUCE THE R THROTTLE. R THROTTLE REMAINED JAMMED AT TKOF PWR, A FORCE OF APPROX 25-50 LBS WAS REQUIRED TO BREAK LOOSE THE THROTTLE AND PWR WAS REDUCED. PF'S ATTN WAS DIVERTED TO ASYMMETRICAL THRUST SIT AND MANDATORY ATC LEVELOFF ALT OF 2500 FT MSL, RESULTING IN FLAPS 5 DEGS OVERSPD BY APPROX 20 KTS.
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.