Spoiler mixer bearing wear due to sand contamination 737-6/7/8/900

Due to repetitive speed brake actuator malfunctioning (found burns) on 737NG of

our fleet, and also a hardness of speed brake mechanism, an inspection has

been carried out of the spoiler mechanism, which lead us to incriminate the

spoiler mixer, therefore it has been sent to the workshop, the inspection

finds that:

1. A sand quantity inside the spoiler mixer (our fleet often operates in

the desert area’s).

2. Due to the sand the bearing (A) shown in pictures, was

found jammed therfore causing a frictional wear against its housing as shown

in picture (3).

3. Auto speed brake actuator malfunctioning is the consequence of the hardness

of speed brake mechanism.

Many thanks for Makhloufi for this input.

 

> FOR INFORMATION ONLY. UNCONTROLLED DATA !.

Sjap.nl uses cookies to use the content and ads for functions to analyze website-traffic. Sjap.nl also shares information about your usage on this site with our partners for social media, ads and analysis. By continuing to use this site, you agree to the use of cookies. More information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

More information about our privacy policy and cookies, see the Privacy Policy & Cookies page.

Click here to read more about how Google uses data when you use our partners' sites or apps.

Close