As an Amazon Associate, we earn from qualifying purchases. True Blue Power Emergency Power Supply | Aircraft Spruce Mid-Continent . MD420 Gallery Attributes Brand name, Manufacturer name, ManufacturerMid-Continent Extra Product NameTrue Blue Power Emergency Power Supply | Aircraft Spruce keywordsMID-CONTINENT, EMERGENCY, POWER, SUPPLY moq, multiple, tierMinQty11 MPNMD420 qtyInStock0 SKU11-05540 snippetTrue Blue Power Emergency Power Supply The MD420 Emergency Power Supply System is designed to supply emergency power to the Mid-Continent Instrument 4200 and 4300 series attitude indicator when the aircraft main power buss has been de-energ tierPrice12995.00 Distributor offers SellerSKUMOQIn stockMultiplePrices Aircraft Spruce11-05540111 @ $2995.00