Free edition of the FAA Airframe and Powerplant General subject.Practice questions This questions were updated per the new FAA testpool. The new test pools, requires new drawings this version doesnot utilize questions that relies on those affected drawings andthus is not covered by the new guidelines.

Practical design guide using LED.

3 Phase WYE circuit calculator

Simplify your WYE/DELTA resistance circuits or simply convert them.

Free reviewer for the A and P powerplant subject

RLC circuit calculator

A handy reference for the Aircraft technicians, Engineers andMechanics.

A quick reference when you just need to find the answer right away.