EASA SIB 2011-12: Bombardier BD-700 — Possible Failure of Exit Door Actuator Tensator Springs | RegNotify

Safety Information BulletinEASA SIB 2011-12

Bombardier BD-700 — Possible Failure of Exit Door Actuator Tensator Springs

Published: May 26, 2011

Bombardier BD-700

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Owners and operators of Bombardier BD-700-1A10 and BD-700-1A11 aircraft should review their maintenance manuals to confirm incorporation of Bombardier Temporary Revisions 5-2-37, 5-2-2, and 5-2-8 dated January 15, 2010. They should follow the recommended repetitive discard tasks for the Tensator springs as outlined in these revisions. No mandatory compliance deadline is specified, but timely action is advised to mitigate risks.

Summary

EASA Safety Information Bulletin SIB No: 2011-12 is an advisory document concerning Bombardier BD-700-1A10 and BD-700-1A11 aircraft. It highlights a possible failure of one or more Tensator springs in the exit door actuator, which may cause uncontrolled opening and closing of the exit doors. The bulletin supports the FAA's recommendations to address this issue and informs European operators accordingly.

What changed

This bulletin introduces awareness of the potential failure of Tensator springs (part number GS321-0580-1) in the door actuators of Bombardier BD-700-1A10 and BD-700-1A11 aircraft. It references temporary revisions to the Bombardier maintenance manual that include repetitive discard tasks for these springs to mitigate the risk. No mandatory Airworthiness Directive action is proposed at this time.

Why it matters

The uncontrolled opening and closing of exit doors due to Tensator spring failure can pose safety risks to ground personnel and cause minor damage to the aircraft door and adjacent structure. Operators and maintenance teams need to be aware of this issue to prevent potential injuries and maintain aircraft integrity. Compliance with updated maintenance procedures ensures continued safe operation of affected aircraft.

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