Powerplant Flashcards
What categories of aerodynamic smoothness must engine cowls be?
Class 1
Class 2
How do we ensure an intake is correctly oriented?
Check location of 2 index pins
What two passive fire detection features are used on fan reverser cowlings?
Protective coating
Fire seal- titanium with silicon layer
What must be carried out when a pressure relief door is found open?
Air leak check on all components?
Why is the forward mount the only one to transmit thrust?
To allow for thermal expansion/contraction
Approved engine change methods?
Crane supported sling
Bootstrap
Uplift loader
2 types of drain?
Indirect
Direct
What is the purpose of the drains collector assembly?
Keeps fluid in small tanks
How are engines divided into zones?
Based on cooling and fire walls
How is a turboprop installed into an aircraft?
Upper nacelle- strong rubber mounts and links
Rear- swinging links on tubular mounting frame
What are the minimum safe clearances for pipes?
6mm
Why do electric bayonet connectors have three separate threads?
Quick connection
Reduced cross threading and misalignment
What is the minimum distance a cable tie should be from a connector?
6 inches
What should be checked after control rigging?
Locking
Movement- range and freedom
Correct sense of movement
After control rigging what must be carried out before a ground run?
Duplicate independent inspection
