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Helicopter Maintenance Tips September 2015

Posted 7 years 263 days ago ago by Scott Skola

ATA 67
Airbus H135
: A quick reminder was sent in on the proper hardware stack up at the tailrotor hydraulic actuator input lever and tailrotor control rod. A situation can present itself where a 2nd (extra) spacer/washer can be left on the tailrotor gearbox side of the input lever hardware stack up. Especially when the hydraulic actuator is changed and includes new hardware. The existing washer can very easily be mistaken for part of the control rod assembly. The first potential clue of the extra washer is the control tube/input lever nut and lock washer interface is a “little” off. The second hard clue is the pilot will notice his tailrotor pedals are “off” a little in normal conditions.   [Submitted by PA]

ATA 24/96

Multi-Model: If you are adjusting the voltage on an older style DC voltage regulator, where the adjustment screw is located through a small hole in a metal cover, insulate the shank of your small screwdriver with heat shrink or electrical tape. Many a regulator has had the smoke let out of them by engaging the adjustment screw and touching the metal cover. Especially when sitting under the nose of a running 212 or 412. [Submitted by Rw]

Send an email to [email protected] Enter tip type (general, aircraft, component, ground support, etc.) in subject line. Describe the tip in as much detail as needed and be sure to include any basic info for those readers who lack experience on specific model. Ensure the aircraft/component model and your credit preference (anonymous, nickname, real name) are included in the email. No email addresses will be shared or permanently stored and will be deleted once tip is posted in the blog.  

About the author: After 32 years maintaining helicopters in various capacities, Scott concluded a full time career with a major operator in 2014. When not pursuing future writing projects, he can still be seen around the flight line tinkering on aircraft for beer money.  Scott can be contacted at [email protected].

*And to keep the hounds at bay, the information contained in this blog is for discussion purposes only.*