APU
Custom Checklist Description:
- The Sapphire-5 APU "Technical Description" and "Operation Instructions" manuals have been translated from the well documented, German Air Force Manual into English. The "Technical Description" is a A4 format book with 253 original pages and includes drawings, detailed descriptions and parameters of every part of the Sapphire-5 and accessories. The "Operation Instructions" is also an A4 book, and the 78 original pages contain operation instructions, maintenance instructions, wiring diagrams, instruction for the 600 starts APU inspection (hot section) plus trouble shooting procedures.
- The third book is an amendment to the books above and consists of some maintenance experience and hints which are not included in the books above!
- For licensing reasons, the 11-book "Technical Description of the L-39" set does not include APU information.
- Examples of APU Manual contents:
![]() APU Technical Description |
![]() APU Diagram |
![]() APU Diagram Description |
![]() Oil Pump |
![]() Oil Pump Description |
![]() Sapphire Overview |
![]() Sapphire Description |
![]() APU Operation Manual |
![]() APU Operation Description |
![]() Trouble Shooting Description |
![]() Trouble Shooting Flowchart |
![]() APU Operation Manual (Amendment) |
![]() APU Operation Manual (Amendment) |
![]() APU Operation Manual (Amendment) |
![]() APU Operation Manual (Amendment) |
![]() APU Operation Manual (Amendment) |
![]() APU Operation Manual (Amendment) |
- Important Note: These manuals will only be sold to private individuals. Due to international law restricting "technology transfers" and "technical assistance" to some parties, Aero-Contact will verify private owner/operator information prior to any shipments. Any sale or resale to military organizations is strictly prohibited.

































