Tempest AA4A2-1 DRY AIR PUMP, ELECTRIC AUXILIARY 28V

The **Tempest Electric Dry Air Pump (AA4A2-1)** is a **FAA-PMA approved auxiliary dry air pump** designed to provide an independent pneumatic source for standby flight instrument systems. Manufactured by Tempest (Aero Accessories), the pump supports continued operation of vacuum-driven gyroscopic instruments in the event of a primary vacuum system failure. Engineered for dependable operation, the pump features lightweight monolithic construction, a patented Wear Indicator Port (WIP™) for vane inspection, and an LRT™ oil diverter to help minimise contamination. It is supplied ready for installation with the required installation gaskets. --- ## Applications - **Standby pneumatic systems** for vacuum-driven flight instruments - **Auxiliary vacuum source** during primary system failure - Suitable for **scheduled maintenance and replacement** of approved standby air pumps - Used in **general aviation and utility aircraft** equipped with compatible standby systems --- ## Why CJ Aerospace? CJ Aerospace supplies aircraft pneumatic system components with technical guidance and fast dispatch. - 🇦🇺 **Australian-owned & operated** - 📦 **Stocked locally for fast dispatch across Australia** - 🔧 **Technical support for installation and maintenance** - ✈️ **Trusted by MROs, operators, and aviation professionals** > ✉️ [Contact us sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need installation guidance or technical documentation? Contact CJ Aerospace for expert support.

- **FAA-PMA approved** auxiliary dry air pump - **Wear Indicator Port (WIP™)** allows vane condition monitoring - **Patented LRT™ oil diverter** helps reduce contamination - **Monolithic lightweight construction** for durability - **Installation gaskets included** for simplified installation