MH/T 2007-2015 in English
VALIDSpecification for regular checking of flight recorders
- Issued on:2015-03-09
- Implemented on:2015-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$272.00
| Standard No: | MH/T 2007-2015 |
| Document status: | VALID |
| Title in English: | Specification for regular checking of flight recorders |
| Title in Chinese: | 飞机记录器定期检验规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2015-03-09 |
| Implemented on: | 2015-06-01 |
| Professional Classification: | MH-Civil Aviation |
| Related Topics: | Industry-leading regular testing
mh/t5111-2015 mh/t 0054.1 2015 mh/t4023-2007 mh/t5110-2015 Regular testing of the top 10 in the industry record inspection records Formal Periodic Testing mh/t+4023-2007 mh/t 0054.1-2015 issue directory mh/t 2015 Semi-automatic flight inspection multiple marker test Testing and laboratory industry standards Bearing inspection standard records Potential period test MH/T6102-2015 mh/t 7015-2007 Current aircraft strength specifications tb/t 2007-2015 |
Introduction
Technical Background of the Standard
This standard, as a supporting technical document for CCAR-91, establishes unified specifications for the periodic inspection of Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR). The 2015 version mainly updates the inspection parameter thresholds of digital recorders and adjusts the error frame rate detection standard from the original 5% to a dual control of 3% basic threshold + 5% instantaneous threshold.
Core Inspection Requirements
| Inspection Items | Flight Data Recorder | Cockpit Voice Recorder |
|---|---|---|
| Inspection Period | ≤24 months or as per MMEL requirements | ≤24 months or as per MMEL requirements |
| Continuous Recording Time | ≥25h(Transport Category)/10h(General Category) | ≥2h(Transport Category)/30min(General Category) |
| Key Indicators | Frame Error Rate≤3%(≤5% within 1h) | Voice channel intelligibility 100% |
Parameter verification implementation points
Mandatory parameter inspection case
Take the B737NG model as an example, the 16 core parameters in Appendix B must be verified:
- Pressure altitude (error ≤75ft)
- Indicated airspeed (error ≤5kt or 5%)
- Pitch attitude (error ≤2°)
- Engine thrust parameters (EPR/N1 deviation ≤3%)
Common failure mode handling
When Underwater Locator Beacon (ULB)When the battery fails or the recorder housing seal does not meet the standard, the 72-hour emergency replacement procedure should be initiated according to the requirements of AC-121-65. In 2018, a certain airline's A320 model was restricted from operation by the authority due to non-conformity due to failure to replace the failed ULB in time.
Standard Evolution Analysis
Compared with the 2009 version, the 2015 version mainly strengthens:
- Added QAR data comparison requirements
- Cleared the inspection standards for data link information (DL)
- Detailed the version management specifications for the decoding database
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