Unlit Electric Directional Gyro 28 volt, TSO
The RC Allen electric directional gyro is similar in appearance and presentation to P/N RCA11A-8 but employs an electrically-driven rotor whose gimbal frame is connected to the vertical azimuth card. A heading select knob is fitted at the 7 o’clock position. Rotor run-up time is 3 min. max. after power is applied. All models have an AC (brushless) motor. The DC versions have a built-in inverter which converts the aircraft DC power to the required voltage & frequency for motor operation. A power failure warning flag drops into view whenever the supply voltage is lost or when the voltage has dropped below a level acceptable for proper operation of the gyro. Connector mates with Amphenol P/N 126-223 or equivalent. Diam: 3-3/8 x 3-3/8 x 6-1/4″. Power: 14, 28 VDC. This directional gyro meets or exceeds requirement of FAA TSO-C5c.
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- Operating voltage: 9 to 32 VDC
- Circuit breaker: 1 Amp
- Current draw: 0.35 Amp max (14VDC), 0.20 Amp max (28VDC)
- Length: 2.3 in. max
- Width: 3.37 in. max
- Height: 3.37 in. max
- Weight: 8.3 oz. max
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- Max Indicated Airspeed: 300kts
- Vertical speed range: ± 9,000 feet/minute
- Altitude range: -5,000 - +33,000 feet
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- Electrical: 14 or 28 VDC aircraft power
- Unit size: 3.4"W x 3.6"H x 3.0"D (86.4 x 91.4 x 76.2 mm)
- Weight: 13.3 oz (377.0 g), unit
- Display size: 3.5" diagonal (88.9 mm diagonal)
- Display resolution: 320 x 240 pixels (QVGA), LED backlit color LCD
- Receiver: High-sensitivity GPS
- Maximum indicated airspeed: 300 kts
- Altitude range: -1,400 – +30,000 feet
- Vertical speed range: ± 20,000 feet/minute
- Pitch/roll range: ±360°
- Backup battery: Rechargeable lithium-ion
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SAM – MD302 2-inch Standby Attitude Module
- Power Input: 10-32 VDC; 6W nominal, 25W max
- Output: ARINC 429 (see manual for specific labels)
- Operating Range:
- Attitude: 300° per second pitch, roll and yaw (max)
- Altitude: -1,500 to +55,000 ft (-457 m to 16,764 m)
- Airspeed: 20 to 500 knots (23 to 575 mph) (37 to 926 kph)
- Vertical Trend: 6 second time frame
- Heading: Displayed via ARINC 429 input (external interface dependent)
- Units of Measure:
- Altitude: Feet or meters
- Barometric Setting: Inches of mercury, millibars
- Airspeed: Knots, miles per hour or kilometers per hour
- Panel Tilt: Configurable: -90° to +90° pitch
- Panel Roll: Configurable: -5° to +5° roll
- Lighting:
- 5, 14 or 28 VDC external input or internal photocell
- Programmable dimming curve
- Pilot Interface: 16-detent, push and turn knob
- Weight: 1.6 lbs (0.73 kg)
- Battery:
- Rechargeable, field-replaceable, internal battery
- Technology: Nanophosphate® lithium-ion
- Run time: 60 minutes minimum when fully charged and properly maintained
- Mounting: Front panel mounted
- Mating Connectors:
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- Certification:
- FAA TSO certified to C2d, C3e, C4c, C10b, C106, C113a, C179a
- ANAC TSO certified to C2d, C3e, C4c, C10b, C106, C113a, C179a
- EASA ETSO certified to C2d, C3d (incomplete), C4c, C10b, C106, C113, C179a
- RTCA DO-178B and DO-254 Design Assurance Level (DAL) A
- RTCA DO-160 and RTCA DO-311 qualified
