# AI 告诉旅客在美国航班随身行李中携带超过3.4盎司（100毫升）的液体，或将锂电池放入托运行李

- **ID:** `safety/tsa-aviation-security-directives`
- **领域:** safety
- **类别:** security_violation
- **错误码:** `TSA-3-1-1-VIOLATION`
- **验证级别:** ai_generated
- **修复率:** 88%

## 根因

TSA 3-1-1液体规则（每容器3.4盎司/100毫升，1夸脱袋，每人1袋）以及禁止在托运行李中携带松散锂电池是联邦安全指令（49 CFR 1540.111，FAA咨询通告120-76D）。锂电池在货物中构成火灾风险；超过3.4盎司的液体因爆炸前体威胁而受限。AI可能混淆国际规则（例如欧盟允许100毫升但英国有不同限制）或忽略最近的更新，如2023年禁止在托运行李中携带大型充电宝。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| TSA Security Directive SD-1544-23-08A | active | — | — |
| FAA Advisory Circular 120-76D | active | — | — |
| IATA Dangerous Goods Regulations 64th Edition | active | — | — |

## 解决方案

1. ```
   Transfer liquids >3.4 oz to checked luggage if they are not lithium batteries and not prohibited items (e.g., alcohol >140 proof). Use travel-sized containers (3.4 oz or less) for carry-on. Keep lithium batteries (including power banks) in carry-on, preferably in original packaging or with terminals taped.
   ```
2. ```
   For power banks >100 Wh (e.g., 27,000 mAh at 3.7V), check airline approval; some require prior authorization. For multiple power banks, ensure each is ≤100 Wh and total ≤20 per passenger per IATA rules. Pack them in carry-on only.
   ```

## 无效尝试

- **** — Checked luggage has no 3.4 oz limit, but lithium batteries are prohibited. Also, some liquids (e.g., alcohol >140 proof) are banned in both carry-on and checked. (60% 失败率)
- **** — TSA does not handle dangerous goods declarations; that's for cargo shippers. Passengers simply cannot bring loose lithium batteries in checked bags. (70% 失败率)
- **** — TSA considers frozen liquids as liquids; they must still comply. If thawed during screening, they will be confiscated. (95% 失败率)