Service difficulty report · Spring · Boeing 737400

Difficulty date
December 24, 2015
Submitted
April 22, 2016
Operation
General aviation
Make and model
Boeing 737400
Aircraft time
50,486 hours
Engine
Cfmint CFM563C1
Part
Spring
Part number
69733611
Condition
Fractured
Location
Control Column
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) DURING PREFLIGHT CHECKS, CREW EXPERIENCED LIGHTER THAN NORMAL CONTROL COLUMN FORCES WITH REGARDS TO THE ELEVATOR CONTROLS. MAINTENANCE STAFF INVESTIGATED AND FOUND BOTH INNER AND OUTER SPRINGS PN 69-73360-1 AND 69-73361-1 ON THE FEEL AND CENTERING UNIT FRACTURED. THE SPRINGS WERE REPLACED ON THE FEEL AND CENTERING UNIT AND SYS TESTED FOR ELEVATOR FEEL FORCE WITH NO FURTHER DEFECTS NOTED.

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