MH/T 9010.4-2018 in English
VALIDThe technical specification of high rate air-to-ground data link based on long term evolution Part 4: Installation and acceptance specification
- Issued on:2018-12-14
- Implemented on:2019-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
| Standard No: | MH/T 9010.4-2018 |
| Document status: | VALID |
| Title in English: | The technical specification of high rate air-to-ground data link based on long term evolution Part 4: Installation and acceptance specification |
| Title in Chinese: | 基于LTE技术的地空高速数据链技术规范 第4部分：安装与验收规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-12-14 |
| Implemented on: | 2019-04-01 |
| Professional Classification: | MH-Civil Aviation |
| Related Keywords: | long term evolution part
core installation requirements dimensions traditional data link atg system structural air-to-ground data link acceptance specification introduction standard framework technical specification |
| Related Topics: | mh/t
mh/t 6027 let let technology let technology mh/t 4049-2018 data link Technical specification requirements for the installation of sliding contact lines |
Introduction
Standard Framework and Technology Evolution
MH/T 9010.4-2018, as the fourth part of the LTE Ground-to-Air Communication System series of standards, marks the maturity of my country's civil aviation technology in the field of broadband ground-to-air communication. This standard inherits the 3GPP LTE technical framework and puts forward special requirements for the harsh aviation environment. Its technical evolution path can be traced back to the upgrade requirements of the traditional VHF data link.
Analysis of core installation requirements
| Dimensions | Traditional data link | ATG system |
|---|---|---|
| Structural loads | Only consider physical installation | Need to pass dynamic load analysis |
| Electromagnetic compatibility | Class B requirements | DO-160GClass F enhanced standards |
| Power supply design | Main bus power supply | Prohibit critical bus power supply + emergency power off design |
Key acceptance process
Typical implementation case: In a certain type of business jet modification project, three-stage verification is required:
- Installation compliance check: Focus on checking whether the EWIS harness spacing meets the requirements of AC 25.1701
- Ground EMC test: Verify the minimum 20dB isolation with the TCAS system
- Flight test verification: Complete the switching success rate ≥ 99.7% test at FL300
Continuing airworthiness management
Chapter 7 of the standard innovatively introduces the fault prediction and health management (PHM) requirements:
- Maintenance intervals must be dynamically adjusted based on MTBUR (mean unplanned replacement interval) data
- LRU-level fault code mapping tables must be provided
- Software maintenance must comply with DO-178C tool qualification requirements
Implementation recommendations
For the accessibility requirements of standard 5.4.2, it is recommended to adopt:
1. The layout of the equipment compartment follows the 30cm reach principle2. The quick release device must meet the requirement of 10 seconds to complete disassembly3. The maintenance port configuration complies with the ARINC404A standard
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