一次强降水过程导致RVR数据丢失及其对飞行的影响分析

Analysis of Runway Visual Range (RVR) Data Loss Caused by a Heavy Precipitation Event and Its Impact on Flight Operations

摘要: 2025年6月14日及15日，宁波机场连续遭遇强雷阵雨天气，导致13号跑道LT31大气透射仪连续出现RVR (跑道视程)数据异常丢失。本文基于两次事件的时间线分析，结合设备特性与环境因素，深入剖析大风强降水与特定风向叠加导致RVR数据丢失的机理，评估其对飞行运行的影响，并提出针对性改进建议。研究表明：风向与跑道平行、强降水冲击设备窗口是数据丢失的直接诱因；设备老化与防护不足是深层原因；而跨部门协同处置可有效缓解运行风险。

Abstract: On June 14 and 15, 2025, Ningbo Airport experienced consecutive heavy thunderstorms. This weather caused continuous anomalies and losses in Runway Visual Range (RVR) data on Runway 13, specifically from the LT31 transmissometer. Based on a timeline analysis of these two events, combined with equipment characteristics and environmental factors, this paper delves into the mechanism by which strong winds, heavy precipitation, and specific wind directions synergistically led to the RVR data loss. It further assesses the impact on flight operations and proposes targeted improvement measures. The study reveals that: 1) Winds parallel to the runway direction combined with heavy precipitation impacting the instrument’s optical window were the direct triggers for data loss; 2) Aging equipment and inadequate protective measures constituted the underlying causes; 3) Multi-departmental coordination during response effectively mitigated operational risks.