Test 3 Flashcards
Which ATA Chapter is Airworthiness Limitations?
04
Which ATA Chapter will you use for greasing (servicing)
12
Which ATA Chapters are about Main Rotors ?
60-69
When statically balancing the Bell 206 MRH, which type of balancing do you have to do first?
Chordwise
What qualifies someone to do a dual inspection?
Attended an aircraft training college
_________ is where under extreme force, metal transfer will occur between two points
Galling
What are the two types of vibrations?
Vertical and Lateral
Blade alignment is necessary on _________ rotor heads
Semi-rigid
If there is a low frequency vibration on a helicopter, where is the likely source?
Main Rotor
If there is a medium frequency vibration on a helicopter, where is likely the vibration?
Tail Rotor
If there is a high frequency vibration on a helicopter, where is likely the vibration?
Turbine/Engine
Out of balance main rotor blades cause a ________ vibration
lateral
Out of track blades cause ________ vibration?
Vertical
What determines the frequency of a vibration?
The speed of the vibrating component
Self Locking nuts when installed need to be accounted for….
Tare torque
Before balancing blades on a Bell 206, what must you do first?
Allign the blades
What is the solution to vertical vibration?
Adjust pitch links (ground tracking)
_____ ______ are used to adjust for inflight tracking
Trim Tabs
Lead/Lag has to be ______ _________ + _________
Travel Limited/Dampened
Out of phase condition is unique to ______ _________ main rotor heads
Fully Articulated
The root cause of out of phase blades is ____ __________
Bad Dampeners
Are these blades out of phase or out of track?
Out of track
Are these blades out of phase or out of track?
Out of phase
