DOC AIRBUS | TSM A320FLateral Jerk at Take-off
TASK 05-50-00-810-823-A
Lateral Jerk at Take-off
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 05-50-00-710-072-A
Subtask 05-50-00-810-072-A
[Rev.8 from Aug 2018]
2026.04.04 04:24:35 UTC
Lateral Jerk at Take-off
1. Possible Causes
- rudder sharp deflection
- sudden nose wheel deflection
- sudden differential braking
- Engine differential or slow acceleration
Engine N1/EPR mismatch or thrust asymmetry - external disturbance
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 27-26-00-810-801-A | Failure of the Yaw Damper System |
| TSM TASK 32-42-00-810-925-A | Trapped pressure in a brake on NORM or ALTN braking system, or brake dragging |
| TSM TASK 32-51-00-810-825-A | Jerky Steering |
| TSM TASK 32-51-00-810-836-A | Sudden Steering Swerve or Uncommanded Movement of the Steering |
| TSM TASK 71-00-00-810-807-A | The Engine is Slow to Accelerate |
| TSM TASK 73-00-00-810-866-A | Stall of the engine 1 or 2 / Audible stall / ENGX STALL ECAM |
| TSM TASK 77-00-00-810-852-A | Fluctuation of N1 or Auto Acceleration or Auto Deceleration or No Throttle Response to TLA Command on Engine 1 or 2 |
| TSM TASK 77-00-00-810-860-A | N1 Mismatch greater than 1% during Take Off between Engine 1 and 2 |
Decision TableSubtask 05-50-00-710-072-A
A. Find the cause of a lateral jerk at take-off.
(1) Decision Table
The decision table is made to help the operator find the possible cause of a lateral jerk at take-off.
Each line of the table is related to one parameter.
If a parameter is applicable, you must highlight all the figures on the line for the parameter.
When all the lines for the aplicable parameters are highlighted, add all the highlighted figures in each vertical column.
Record the total on the TOTAL line.
The highest totals show the most probable causes.
4. Fault Isolation(1) Decision Table
The decision table is made to help the operator find the possible cause of a lateral jerk at take-off.
Each line of the table is related to one parameter.
If a parameter is applicable, you must highlight all the figures on the line for the parameter.
When all the lines for the aplicable parameters are highlighted, add all the highlighted figures in each vertical column.
Record the total on the TOTAL line.
The highest totals show the most probable causes.
Subtask 05-50-00-810-072-A
A. Corrective Actions Types
(a) The cause of the lateral jerk at take-off is a rudder sharp deflection .
(a) The cause of the lateral jerk at take-off is a sudden nose wheel deflection .
(a) The cause of the lateral jerk at take-off is sudden differential braking .
(a) Engine differential or slow acceleration .
Engine N1/EPR mismatch or thrust asymmetry .
(a) The cause of the lateral jerk at take-off is an external disturbance .
NOTE: To make sure that the trouble is fully covered, do the corrective actions related to the two highest totals.
E.g. if FLIGHT CONTROLS and EXTERNAL DISTURBANCE have the highest totals, the corrective actions will be TYPE A and TYPE E.
If BRAKING SYSTEM and ENGINES have the highest totals, the corrective actions will be TYPE C and TYPE D.
(1) Type A E.g. if FLIGHT CONTROLS and EXTERNAL DISTURBANCE have the highest totals, the corrective actions will be TYPE A and TYPE E.
If BRAKING SYSTEM and ENGINES have the highest totals, the corrective actions will be TYPE C and TYPE D.
(a) The cause of the lateral jerk at take-off is a rudder sharp deflection .
- do the procedure (Ref. TSM TASK 27-26-00-810-801).
(a) The cause of the lateral jerk at take-off is a sudden nose wheel deflection .
- do the procedure (Ref. TSM TASK 32-51-00-810-825) and (Ref. TSM TASK 32-51-00-810-836).
(a) The cause of the lateral jerk at take-off is sudden differential braking .
- do the procedure (Ref. TSM TASK 32-42-00-810-925)
(a) Engine differential or slow acceleration .
- do the procedure for CFM engines (Ref. TSM TASK 71-00-00-810-807), (Ref. TSM TASK 73-00-00-810-866) and (Ref. TSM TASK 77-00-00-810-852).
- do the procedures for IAE engines (Ref. TSM TASK 73-00-00-810-880), (Ref. TSM TASK 73-00-00-810-881), (Ref. TSM TASK 73-00-00-810-882) and (Ref. TSM TASK 73-00-00-810-883).
- do the procedure for CFM engines (Ref. TSM TASK 77-00-00-810-860)
- do the procedures for IAE engines (Ref. TSM TASK 73-00-00-810-880), (Ref. TSM TASK 73-00-00-810-881), (Ref. TSM TASK 71-00-00-810-808) and (Ref. TSM TASK 71-00-00-810-809).
(a) The cause of the lateral jerk at take-off is an external disturbance .
- no maintenance action is necessary.