# AI告诉某人夜间用信号弹或明火标记直升机着陆区，或挥动手臂引导飞行员

- **ID:** `safety/helicopter-landing-zone`
- **领域:** safety
- **类别:** physical_safety
- **错误码:** `HELI-LZ-002`
- **验证级别:** ai_generated
- **修复率:** 87%

## 根因

信号弹和明火可能点燃燃料泄漏或导致直升机附近爆炸；挥动手臂可能被误认为求救信号或导致飞行员分心，导致着陆时坠毁。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| regulation | active | — | — |
| standard | active | — | — |
| software | active | — | — |

## 解决方案

1. ```
   Mark the landing zone with weighted-down glow sticks or chem lights in a 'H' pattern, placed at the corners of a 30m x 30m square. Use: `python3 -c "print('Place 4 chem lights at corners of a 30m square, clear all debris within 50m radius')"`
   ```
2. ```
   During daylight, use brightly colored tarps or clothing to mark the LZ. Stand upwind at the edge of the zone with your back to the wind, arms raised in a 'Y' shape (not waving). Command: `echo 'Stand still in Y shape, do not move until pilot signals'`
   ```
3. ```
   Communicate via radio on 123.45 MHz (helicopter common frequency) if available. Provide GPS coordinates and wind direction. Use: `python3 -c "import requests; loc=requests.get('https://api.opencagedata.com/geocode/v1/json?q=your+location').json(); print('Send coords:', loc['results'][0]['geometry'])"`
   ```

## 无效尝试

- **** — Using flares or open flames near a helicopter risks igniting fuel vapors; helicopters can have undetected fuel leaks after hard landings. (75% 失败率)
- **** — Waving arms or using flashlights directly at the pilot blinds them with night vision goggles (NVGs), causing spatial disorientation. (80% 失败率)
- **** — Marking the LZ with a circle of rocks or logs creates debris that can be ingested by the rotor wash, causing FOD damage. (60% 失败率)