RJNT关闭至北京时13:30： L0382/24 富山 (RJNT) 2024/01/13 04:45 – 2024/01/13 05:30 (X) 替代L0380/24 RWY 02/20-CLSD DUE TO SN REMOVAL
好在当时因为日本地震，多带了油，所以可以有充裕的时间等待。
签派员ACARS：SUGGEST HOLDING TIL 0530UTC,WE WAIT WX IN RJNT. 签派建议机组盘旋等待到1330，后续等待富山最新天气报文。
但是当时富山没有发布雪情通告。签派员担心顺风和污染跑道影响落地性能。使用OPT计算落地性能如下：
签派从站长那里得知RJNT13:30确认开放，并得到最新实况天气已经满足落地标准。
签派员ACARS：REMIND THE DOWNWIND LANDING PERFORMANCE, WHICH MAY ONLY BE ACHIEVED WITH MAXIMUM MANUAL OR MAXIMUM AUTOMATIC OPERATION 由于RJNT一直没有发布雪情通告，签派使用OPT湿跑道计算RJNT顺风落地性能，得知可能只有最大人工和最大自动满足落地性能，同时提醒机组。
我还是去翻了一下以前的文章，我在2016年写过一个《近进的灯光的等级》，文中说道了《Order 8260.3F – United States Standard for Terminal Instrument Procedures (TERPS)》给出了不同进近灯光构型的强度。但是当中并没有SALSR
跟据FAR 121.313 Miscellaneous equipment. No person may conduct any operation unless the following equipment is installed in the airplane: (b) A windshield wiper or equivalent for each pilot station.
AIM 5-1-4 Flight Plan – VFR Flights Except for operations in or penetrating an ADIZ, a flight plan is not required for VFR flight. It is strongly recommended that a flight plan (for a VFR flight) be filed with an FAA FSS. This will ensure that you receive VFR Search and Rescue Protection.
FAR 121.697 Disposition of load manifest, flight release, and flight plans: Supplemental operations. (c) Except as provided in paragraph (d) of this section, if a flight originates at a place other than the certificate holder’s principal base of operations, the pilot in command (or another person not aboard the airplane who is authorized by the certificate holder) shall, before or immediately after departure of the flight, mail signed copies of the documents listed in paragraph (a) of this section, to the principal base of operations.
FAR121
121.565 Engine inoperative: Landing; reporting.
(a) Except as provided in paragraph (b) of this section, whenever an airplane engine fails or whenever an engine is shutdown to prevent possible damage, the pilot in command must land the airplane at the nearest suitable airport, in point of time, at which a safe landing can be made.
121.7 Definitions.
The following definitions apply to those sections of part 121 that apply to ETOPS:
Adequate Airport means an airport that an airplane operator may list with approval from the FAA because that airport meets the landing limitations of §121.197 and is either—
AC 120-42A（已取消）
AC 120-42B
定义不存在。
根据以上对比，121R4中定义的合适机场，应该是Adequate Airport。FAA对于合适机场的定义在AC120-42A当中是有的，更新AC120-42B已经消失了，当前的FAR121也没有定义。
借用网上的一段话：“Officially AC 120-42A was cancelled and replaced by 120-42B, they did not transfer the definition of “suitable” airport. So that is why I asked.”
Landing at the Nearest Suitable Airport
“Plan to land at the nearest suitable airport” is a phrase used in the QRH. This section explains the basis for that statement and how it is applied.In a non-normal situation, the pilot-in-command, having the authority and responsibility for operation and safety of the flight, must make the decision to continue the flight as planned or divert. In an emergency situation, this authority may include necessary deviations from any regulation to meet the emergency. In all cases, the pilot-in-command is expected to take a safe course of action.
The QRH assists flight crews in the decision making process by indicating those situations where “landing at the nearest suitable airport” is required. These situations are described in the Checklist Instructions or the individual NNC. The regulations regarding an engine failure are specific. Most regulatory agencies specify that the pilot-in-command of a twin engine airplane that has an engine failure or engine shutdown should land at the nearest suitable airport at which a safe landing can be made. A suitable airport is defined by the operating authority for the operator based on guidance material but, in general, must have adequate facilities and meet certain minimum weather and field conditions. If required to divert to the nearest suitable airport (twin engine airplanes with an engine failure), the guidance material also typically specifies that the pilot should select the nearest suitable airport “in point of time” or “in terms of time.” In selecting the nearest suitable airport, the pilot-in-command should consider the suitability of nearby airports in terms of facilities and weather and their proximity to the airplane position. The pilot-in-command may determine, based on the nature of the situation and an examination of the relevant factors, that the safest course of action is to divert to a more distant airport than the nearest air port. For example, there is not necessarily a requirement to spiral down to the airport nearest the airplane’s present position if, in the judgment of the pilot-in-command, it would require equal or less time to continue to another nearby airport.
For persistent smoke or a fire which cannot positively be confirmed to be completely extinguished, the safest course of action typically requires the earliest possible descent, landing and evacuation. This may dictate landing at the nearest airport appropriate for the airplane type, rather than at the nearest suitable airport normally used for the route segment where the incident occurs.
