# CASA Drone Operating Safety Case (OSC)

> Draft and validate the Operating Safety Case (OSC) for complex drone operations in Australia under CASA and CASR Part 101. SORA-aligned risk assessment (GRC, ARC, SAIL) and no-fly zone check against Australian PRD airspace. Logistics and agriculture.



Tags: Aviation, CASA, Australia, Regulatory, Drones, UAS, Safety Case, Logistics, Agriculture


## Example Prompts

- Draft an Operating Safety Case for BVLOS crop monitoring in regional NSW
- Prepare an OSC for a 1-to-many swarming operation in Queensland and run the no-fly zone check
- Review this OSC for CASA/CASR Part 101 completeness and validate structure

URL: https://rakenne.app/skills/casa-drone-osc/index.md

Try this skill: https://rakenne.app/a/?skill=casa-drone-osc



## Overview

Draft and validate the Operating Safety Case (OSC) for complex drone operations in Australia under CASA and CASR Part 101. SORA-aligned risk assessment (GRC, ARC, SAIL) and no-fly zone check against Australian PRD airspace. Logistics and agriculture.

## Getting Started

Add your source materials to the project workspace, then activate the *CASA Drone Operating Safety Case (OSC)* skill. The agent will guide you through the process step by step.

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## Example conversation

Session where a user requests an OSC for BVLOS crop monitoring in regional NSW and runs the no-fly zone check.

> **You:** We need an Operating Safety Case for BVLOS crop monitoring in regional NSW — 5 km corridor, 60 m AGL, multi-rotor MTOM 4 kg. Operations are in Class G. Can you draft the OSC and run the no-fly zone check on our waypoints file?
>
> **Agent:** I'll create the OSC from the template and populate it for your BVLOS operation. Volume 1 covers your organisation, BVLOS operations, aircraft and pilot competency (RePL, BVLOS), lost-link behaviour (RTH), and maintenance. Volume 2 covers the multi-rotor specs, GNSS, C2 link, and RTH/geofence. For Volume 3 I'm drafting the risk assessment using SORA: ground risk (GRC — low population density, exclusion zones) and air risk (ARC — Class G, procedural mitigations). I've run **no_fly_zone_check** on your waypoints file: 12 waypoints found within Australian bounds. You need to verify these against CASA OAR 088/25 and current NOTAMs; I've documented that in the OSC. Running **validate_osc_structure** now.
>
> **Agent:** Validation: all three volumes and key sections present. One WARNING — a few placeholders ([Company name], [Date]). I'll replace those with your details. After that the structure is complete for CASA submission.

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## Excerpt from a generated OSC

Below is an excerpt from **Volume 3 — Risk Assessment** produced with this skill for a BVLOS agriculture operation.

```markdown
### 3.2 Ground Risk (SORA GRC)

- **Hazard identification:** Persons and property on the ground along the corridor; farm vehicles; no overfly of assemblies.
- **Intrinsic ground risk (iGRC) / final GRC (fGRC):** Low population density (regional); mitigations: exclusion zones, sheltering assumptions per CASA guidance. fGRC acceptable for the operation.
- **Control measures:** Corridor away from dwellings and crowds; lost-link RTH; no operations in high wind. Pre-flight PRD and NOTAM check.
- **Residual risk:** Accepted as low.

### 3.3 Air Risk (SORA ARC)

- **Hazard identification:** Other airspace users in Class G.
- **Air risk class (ARC):** Mitigations: procedural segregation, NOTAM, coordination. ARC acceptable.
- **PRD / no-fly check:** Waypoints cross-referenced via no_fly_zone_check; operator to verify against CASA OAR 088/25 and NOTAMs. Documented in Operations Manual.
```

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## Extension tools

- **validate_osc_structure** — Validates an OSC document against CASA/CASR Part 101 structure: Operations Manual, Technical Manual, Risk Assessment, key subsections (including SORA GRC/ARC), and unfilled placeholders. Run after drafting or revising an OSC.
- **no_fly_zone_check** — Cross-references proposed coordinates (from a file) with Australian PRD airspace. Validates coordinate format and Australian bounds; reports waypoints and reminds the operator to verify against CASA OAR 088/25 and NOTAMs. Use for the planned flight path and document the outcome in the OSC.


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