Mid-Continent Instruments and Avionics 3 Electric Attitude Indicator 10-32 VDC 4300-311

The Mid-Continent Instruments and Avionics 4300-311 is a 3-inch electric attitude indicator for 10–32 VDC aircraft electrical systems. It features a rotating roll dial, traditional symbolic airplane presentation and integral instrument lighting.

Designed for rear mounting in a standard 3 1/8-inch (approximately 79 mm) round panel cut-out, the 4300-311 uses a single 4-pin connection. The indicator has anti-reflective coated glass and field-replaceable lighting. Published weight is approximately 1.23 kg, with an installation depth of approximately 168 mm behind the panel, excluding the mating connector.

• Manufacturer part number: 4300-311
• Electric input: 10–32 VDC
• Display: rotating roll dial with traditional symbolic airplane
• Lighting: lighted; lighting voltage must be specified
• Mounting: rear mount, standard 3 1/8-inch (approximately 79 mm) panel cut-out
• Published qualification references: FAA TSO-C4c and RTCA/DO-160D

Panel tilt is calibrated to the aircraft installation. Specify the required panel tilt and lighting voltage when ordering, and confirm installation eligibility against the applicable approved aircraft data. The manufacturer documentation reviewed does not state EASA approval status.

Manufacturer documentation: Installation Manual and Operating Instructions, 4300-3XX and 4300-5XX Series.