Below is the standard wiring configuration for the primary power and audio interface: Pin Number / Letter Description / Connection Target Aircraft Ground Connect to the main airframe ground block. 2 +14 VDC Power Connect via a 5A circuit breaker to the avionics bus. 3 Panel Lighting Connect to the aircraft instrument dimmer bus (14V). 4 Speaker Output Connect to the cabin speaker (typically 4 or 8 ohms). 5 Headphone Output Connect to the audio panel or pilot/copilot phone jacks. 6 Microphone Input Connect to the microphone jack / Intercom mic output. 7 Mic Key (PTT) Push-to-Talk switch ground line. 8 Auxiliary Audio Input Input for external audio sources (if utilized). A Nav Audio Output Extracted navigation audio (VOR ident tone) to audio panel. B External CDI / Deviation Output for auxiliary indicators (if applicable).

The primary interface is the . For 14V aircraft, you must jumper Pins 8 and 10 . Wiring Note 1 & 2 +14/28V Power Input Use 18 AWG Red wire 3 & 4 Airframe Ground Use 18 AWG Black wire 5 Low Level Audio 20 AWG Green; used for audio panels 6 Headphone Audio 20 AWG Blue; 50 mW into 300 ohms 11 Mike Audio 20 AWG Brown 12 Intercom Key 20 AWG Yellow; grounds to activate 13 Mike/Phone Ground 20 AWG Black 3. Antenna Connections

Narco Escort II is a specialized, lightweight "shared system" avionics radio designed for light aircraft. Unlike standard dual-function units, it can operate as either a NAV receiver or a COMM transceiver, but not simultaneously. System Specifications Approximately 3 pounds. COMM Capability: 720-channel transceiver. NAV Capability: 200-channel VOR/LOC receiver.

: Perform a baseline VOR alignment check to ensure the tracking needle matches local airport test frequencies.

A dedicated 5-Amp circuit breaker or inline fuse is required. Physical Dimensions Width: 6.25 inches (Standard avionics stack width). Height: 3.25 inches.

The stands out as a highly integrated, legacy panel-mounted avionics system designed to merge communications (COM) and navigation (NAV) capabilities into a single space-saving unit. Proper deployment of this hardware requires strict adherence to its foundational electronics profiles, custom rear-panel interface, and grounding configurations.

The manual specifies that the mounting tray must be installed using size 6-32 stainless steel screws into a rigid instrument panel sub-structure. The unit must be within ±10 degrees of horizontal to avoid gyroscopic interference (though the Escort II is solid-state, the switch mechanisms degrade if angled).

If you need help with a specific part of the installation, let me know: Are you doing a or a replacement ? Are you working with a 14V or 28V electrical system?

If your aircraft has a modern encoder (e.g., ACK A-30), you must wire pins 4 through 12 directly. The manual includes a truth table for altitudes from -1000 to +35,000 feet. A mis-wired encoder is the #1 cause of "Mode C" failures on ramp checks.

For those looking to maintain or install such equipment, consulting with a certified avionics technician or an FAA-certified repair station is necessary to ensure compliance with aviation safety regulations and to verify that the specific airframe can support the electrical load and antenna requirements. Escort-II VOR / LOC Indicator / NAV/COMM - Bennett Avionics

The Escort II is built to standard radio stack proportions, but it requires precise clearance due to its integrated rear support assembly.

If you have acquired a second-hand Escort II or are restoring a classic panel, finding a full installation manual is critical. This article reconstructs the essential installation data, pinouts, and antenna requirements based on the original Type Certificate and maintenance documents.

Ensure the encoder and the transponder share a common ground to prevent "bit dropping."

[Intercom Toggle Switch] │ ▼ [Pin 12: Intercom Key] ───(Grounded through Switch) │ ┌─────────────────────┴─────────────────────┐ ▼ ▼ [Microphone Audio Line Open] [Audio Bypasses Modulator] │ │ └─────────────────────┬─────────────────────┘ ▼ [50 mW Audio Amp Active] │ ┌────────────────────┴────────────────────┐ ▼ ▼ [Pin 5: Low Level Output] [Pin 6: Headphone Audio]