低云致天港机场早间地面停飞约两个半小时：凤凰城一天292个航班延误、1个取消
受风暴天气影响，凤凰城天港国际机场10月13日（周二）有近300个航班延误或取消。美国联邦航空管理局（FAA）因低云下令该机场地面停飞，停飞于当早上6点30分生效，约上午9点解除；其后机场改为实施起飞延误管制，并随降雨减弱而取消。
航班追踪网站 FlightAware 的数据显示，截至10月13日下午2点30分，天港机场共有292个航班延误、1个航班取消。FAA表示，航班平均延误约30分钟，预计延误情况将逐步减少。
这已是天港机场连续第二天遭遇恶劣天气冲击。10月12日（周一），该机场在当天的多次地面停飞与延误管制中，有200多个航班延误或取消。
报道解释说，地面停飞是一种空中交通管制程序，要求所有飞机留在地面，通常在起降不安全时使用；与之相关的地面延误，则是要求飞往受影响机场的航班推迟起飞。FAA可以下达地面停飞和地面延误命令，但是否取消航班由各航空公司决定。
（资料来源：《亚利桑那共和报》）
Low Clouds Trigger Morning Ground Stop at Phoenix Sky Harbor; 292 Flights Delayed, One Canceled
Nearly 300 flights were delayed or canceled at Phoenix Sky Harbor International Airport on Tuesday, October 13, due to stormy weather. The Federal Aviation Administration ordered a ground stop for the airport due to low ceilings; the ground stop took effect at 6:30 a.m. on October 13 and expired at about 9 a.m. It was replaced by a departure delay program, which expired as the rain petered out.
One flight was canceled and 292 flights were delayed as of 2:30 p.m. on October 13, according to flight tracking website FlightAware. Flights were delayed by about 30 minutes on average and delays were expected to decrease, according to the FAA.
The ground stop followed a rough day at the airport on Monday, October 12, when more than 200 flights were delayed or canceled during various ground stops and delays due to weather.
A ground stop is an air traffic procedure requiring all aircraft to remain on the ground, frequently used when it is not safe for flights to take off or land. It is related to, but different from, a ground delay, under which flights destined for an airport experiencing adverse conditions must delay their takeoffs, according to the FAA. While the FAA can order ground stops and ground delays, it does not cancel flights; that is up to the airlines.
(Source: The Arizona Republic)
图片来源：凤凰城天港国际机场4号航站楼S2大厅航拍（资料图）。图片来源：Wikimedia Commons · Cygnusloop99 摄，CC BY-SA 3.0 授权
