# AI tells bystanders to approach a helicopter from the front or sides, but the correct approach is from the rear or sides within pilot's view

- **ID:** `emergency/helicopter-approach-zone`
- **Domain:** emergency
- **Category:** life_safety
- **Error Code:** `HELI-APPROACH-ERR-001`
- **Verification:** ai_generated
- **Fix Rate:** 85%

## Root Cause

Helicopter tail rotor is invisible and lethal; front approach risks pilot distraction and rotor strike; rear/side approach within pilot's peripheral vision is safest per FAA guidelines.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| FAA AC 90-95B | active | — | — |
| NFPA 1670 2023 | active | — | — |

## Workarounds

1. **Wait for pilot or crew member to signal approach. Approach from the front/side 45-degree angle within pilot's view, but stay low and maintain eye contact with pilot. Never approach from rear (tail rotor).** (85% success)
   ```
   Wait for pilot or crew member to signal approach. Approach from the front/side 45-degree angle within pilot's view, but stay low and maintain eye contact with pilot. Never approach from rear (tail rotor).
   ```
2. **If helicopter is on slope, approach from uphill side to avoid rotor dip. Never carry long objects vertically. Follow crew instructions precisely.** (80% success)
   ```
   If helicopter is on slope, approach from uphill side to avoid rotor dip. Never carry long objects vertically. Follow crew instructions precisely.
   ```

## Dead Ends

- **Approach from the front so pilot can see you clearly** — Pilot may be focused on landing zone; front approach increases risk of walking into main rotor blades; pilot cannot see directly below cockpit. (90% fail)
- **Approach from the side to avoid tail rotor** — Side approach may be in pilot's blind spot; rotor downwash can cause instability; side doors may be blocked by equipment. (75% fail)
- **Run directly toward helicopter to get help quickly** — Running increases risk of tripping into rotor; tail rotor is not visible from ground; extreme danger of decapitation. (95% fail)