Aircraft Maintenance Technology

MAR 2018

The aircraft maintenance professional's source for technological advancements, maintenance alerts, news, articles, events, and careers

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this event the bolt was installed, in the field about 30 days prior to the accident, without the necessary washer to ensure that it stayed in place. The maintenance crew had failed to install the washer. See Figure 5. When the downstop assembly fell out of place it was pushed to the back of the track can and punctured a hole in the fuel tank. This failure to follow procedures error, for a small washer, lead to the aircraft loss. CONCLUSIONS Accident reports present many learning opportunities. The three examples described here are but many that show multiple human factors issues not only in maintenance but also with other crew members. Example 1 and 2 were from the accident reports. Example 3 came from the FAA website: Lessonslearned.faa.gov. That FAA site includes accidents from airlines, general aviation, and rotorcraft. TRAINING THE WORLD FOR WHAT'S NEXT CLASSES FILL UP FAST -Enroll Today! Leading the world in advanced composite training since 1983! enroll today www.abaris.com +1.775.827.6568 MILLENNIUM HL SERIES STARTER GENERATOR BRUSHES HELPING YOU CARRY A HEAVY LOAD. Miraj Corporation is pleased to introduce the Millennium HL Series starter generator brushes. An extension of our industry leading Millennium Series Long Life brush program, these brushes offer improved life and performance under the most demanding load conditions and operating environments, the Millennium HL Series - new brushes for a new generation. MIRAJ 345 Route 17, Hasbrouck Heights, NJ 07604 201-288-8877 • Fax: 201-288-7356 email: mirajcorp@aol.com www.mirajcorp.com FIGURE 5. Leading edge slat track and downstop assembly. The figure shows the condition when the nut comes through the downstop. Main Track These were not separated. These parts may come off if washer is not installed next to the nut. Measured value (Unit : inch) Not to Scale Stop Location Nut Nut Sleeve Downstop Washer Washer Bolt Downstop 0.408 0.256 0.414 0.433

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