Loss of the Left Elevator because of its Two Servocontrols

TASK 27-30-00-810-804-A
Loss of the Left Elevator because of its Two Servocontrols

1. Possible Causes

SERVO CTL-L ELEVATOR, INBD G [34CE1]
SERVO CTL-L ELEVATOR, OUTBD B [34CE3]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-34-00-200-001	Check of the Elevator Servo Controls and Hinge Bearings for Excessive Play and Condition
AMM 27-34-00-710-001	Operational Test of the Elevator and Hydraulic Actuation
AMM 27-34-51-000-001	Removal of the Elevator Servo Control
AMM 27-34-51-400-001	Installation of the Elevator Servo Control
AMM 27-96-00-710-008	Operational Test of the Damping Measurement (Elevator)

3. Fault Confirmation
Subtask 27-30-00-700-124-A

A. Test
(1) Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 27-30-00-810-087-A

A. Do a check of the left elevator servocontrols and hinge bearings for too much play and condition AMM 27-34-00-200-001.
(1) Do an operational test of the damping measurement (Elevator) AMM 27-96-00-710-008:

if the result of the test is not in the tolerances, see Para. (a)
if the result of the test is in the tolerances, see Para. (b).

(a) Replace the SERVO CTL-L ELEVATOR, INBD G [34CE1] and the SERVO CTL-L ELEVATOR, OUTBD B [34CE3] of the left elevator AMM 27-34-51-000-001 and AMM 27-34-51-400-001.

NOTE: The resistance of primary and secondary windings must be between 30 ohms and 500 ohms.

(b) Do the operational test of the elevator and hydraulic actuation AMM 27-34-00-710-001.

[Rev.8 from Aug 2018] 2026.04.04 04:27:30 UTC