Shadik International provides certified Cockpit Voice Recorder (CVR) audio data acquisition, downloading, acoustic signal enhancement, and voice recording preservation services for airlines, operators, and safety investigation boards.

Cockpit voice data represents one of the most sensitive elements of any flight safety review. We ensure that all CVR audio handling conforms rigorously to international aviation privacy standards (ICAO Annex 13 confidentiality clauses and DGCA CAR mandates), utilizing secure air-gapped workstations and restricted access facilities.

Service Scope & Technical Features

• 4-Channel Audio Acquisition: Dedicated channel downloading for Pilot-in-Command (PIC), First Officer (Co-pilot), Cockpit Area Microphone (CAM), and third crew member/public address (PA).
• Duration Models Supported: Full extraction for both 30-minute legacy units, 2-hour modern SS-CVRs, and latest 25-hour mandatory long-duration solid-state recorders.
• Acoustic Noise Filtering: Advanced spectral filtering to minimize cockpit engine drone, airframe vibration, and radio static while enhancing speech intelligibility.
• Acoustic Event Analysis: Spectral analysis of subtle background acoustic signatures (e.g. switch clicks, stall warnings, engine frequency anomalies).
• Time Synchronization: Precise alignment of CVR audio events with FDR telemetry data points for holistic safety investigation timelines.

Technical Specifications & Compliance

Parameter	Specification / Standard
Standards	EUROCAE ED-112A, ED-56A, FAA TSO-C123b, DGCA CAR Sec 5 Series F
Audio Format	Uncompressed WAV / high-fidelity 16-bit 48kHz audio streams
Chamber & Equipment	Direct manufacturer diagnostic interfaces (Honeywell, L3Harris, Universal)
Access Control	Restricted biometrically controlled access with non-disclosure protocols