MH/T 1075-2020 in English

VALID

Safety specifications of aircraft precipitation enhancement

Issued on:2020-07-20
Implemented on:2020-10-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	MH/T 1075-2020
Document status:	VALID
Title in English:	Safety specifications of aircraft precipitation enhancement
Title in Chinese:	飞机增雨作业安全规范
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-07-20
Implemented on:	2020-10-01
ICS Classification:	03.220.50-Air transport
Chinese Classification:	V53-General aviation
Professional Classification:	MH-Civil Aviation
Related Keywords:	aircraft precipitation enhancement introduction standard framework aircraft rain operation aircraft three certificates non-pressurized aircraft operate aircraft model experience wmo
Related Topics:	mh/t rain fly Increased edition job safety Safety work in electrical industry aircraft wiper High temperature work safety technical specifications industry ej/t 1075

本标准规定了飞机增雨作业的基本要求、预先准备、直接准备、作业实施、作业后处理及应急处置要求。
本标准适用于使用民用航空器开展的飞机增雨作业飞行，其他人工影响天气作业飞行可参照该标准执行。

Introduction

Standard Framework and Technology Evolution

As the first safety specification specifically for aircraft rain enhancement operations in my country's civil aviation field, MH/T 1075-2020 fills the gap in the standard of artificial weather modification aviation operations. Based on the GB/T 1.1-2009 standardization work guidelines, this standard integrates the QX/T 151 terminology standard and the GB/T 33679 storage specification requirements to form a technical system covering the entire life cycle of the operation.

Analysis of core requirements

Element category	MH/T 1075 requirements	International comparison (ICAO)
Operation aircraft	Three certificates are required + supplementary airworthiness certification	FAA requires STC certification
Catalyst equipment	Acceptance by meteorological department + regular inspection	Requires NWS filing
Personnel qualifications	Pilot 500h + 50h aircraft model experience	WMO recommends 300h

Critical Control Points

Flight Altitude Control

Article 7.6 of the standard clearly stipulates that oxygen supply equipment must be used when non-pressurized aircraft operate continuously at an altitude of 3000-4000m for more than 30 minutes, or when exceeding 4000m. This requirement is based on data from plateau physiology research and is stricter than FAR 91.211.

Material Management Case

During an operation in North China in 2021, the electrostatic ignition accident of silver iodide flame strips was successfully avoided due to the strict implementation of Article 4.5.3 "power off and oil off when loading materials".

Implementation suggestions

Equipment selection: Prefer twin-engine models such as Y12Ⅳ listed in Appendix A, whose 7,000m ceiling meets most operational needs
Staff training: It is recommended to conduct special assessments on QX/T 151 terminology standards every quarter
Data recording: The macroscopic recording table should include data related to catalyst spreading rate and cloud temperature