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Unintended Load Release Solution
There have been many unintended external load releases over the years and here is a simple way to reduce that number. Install this...
Main Rotor Drag Brace Outer Attaching Hardware
In my travels over the years I have found MANY aircraft with the main rotor outer drag brace bolt hardware incorrectly installed. General...
UH-1 Main Rotor Re-torque
This has been brought up before about a re-torque after main rotor installation. In this case the TM 55-1520-210-23-1 is not a help....
Lower Fuel Cell Floor Panels
Many lower fuel cell floor panels have been damaged in removal see attached photo. These panels should be removed every 3 & 6 phase or at...
Combustor Rumble
Combustor Rumble can be a problem in engines that reverse the combustion gas flow prior toentering the 1st stage gas producer nozzle....
Drive Shaft Removal Tool
Do you know the P/N of the UH1 drive shaft removal tool? We have a customer looking for one and our company doesn’t have it. They stated...
Using Heat and Proper Alignment when Pressing Bearings into Critical Bores
This picture clearly shows the importance of using heat, and proper alignment when pressing bearings into critical bores. This damage was...
Main Rotor Retaining Nut Lock
I was contacted by a mechanic who in the process of removing a main rotor hub assembly after removing the main rotor found that the...
Collective Ground Adjustment
HAVE YOU CHECKED YOUR COLLECTIVE FRICTION LATELY? I just received a couple of photos of the set screws used to make adjustment of the...
42 & 90 Degree Gearbox Caps
A couple of weeks ago I was asked to give some basic information to the maintenance man the pickup team brought with them. He hadn’t...
