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Flight Recorders
FDR/CVR &Data Downloading and Analysis
by
Steven Ng & George Wai
Civil Aviation Department
AsiaSASI WS/3 30 May 2014
Agenda
� Facts of Flight Recorders
� Development of Capability
� Downloading and Analysis
Agenda 1:
Facts
Flight Recorders
� Annex 6 – Operation of Aircraft
� Part I – International CAT - Aeroplanes
� Flight Data Recorders (FDR) (6.3.1)
� Cockpit Voice Recorder (CVR) (6.3.2)
� FDR / CVR performance requirement –
EUROCAE ED-112A
CAT Aeroplanes - FDR
� Types: IA / I / II / IIA (6.3.1.1)
� Duration: 25 hrs except IIA [30 mins] (6.3.1.4)
� 78 Parameters (Appendix 8 Table A8-1)
� II / IIA - at least the first 16
� I - at least the first 32
� IA - at least all the 78
CAT Aeroplanes - FDR
� Type IA for MTOW >5700kg with individual C of A
first issued after 1 Jan 2005 (6.3.1.2.11)
� Type IA – shall record parameters to determine the
aeroplane flight path, speed, attitude, engine power,
configuration, and operation (6.3.1.1.1)
CAT Aeroplanes - CVR
� MTOW >5700kg with individual C of A first issued
after 1 Jan 2003 – CVR records at least the last 2 hrs
(6.3.2.1.3)
� Duration (6.3.2.3)
� All CVR: > 30 mins
� After 1 Jan 2016: >2 hrs
CAT Aeroplanes - CVR
� Four Channels to record (App 8 - 3.1.1):
� Voice communications (radio / crew intercom / PA)
� Aural environment� Voice / Audio of navigation and
approach aids� Four channels record simultaneously
(App 8 - 3.1.3)
Channel 1Co-pilot
Channel 2
Pilot
Channel 3Area (CAM)
Channel 4Time reference and
3rd/4th crew
Hong Kong Requirements
� Air Navigation (Hong Kong) Order
� Article 37 – Flight Recording & Preservation
� Schedule 5 Equipment - Scale P & S for Flight Recorder requirements
� Supplemented by Airworthiness Notices
Construction
� Design Specification –Chapter 2 of ED-112A
� Crash Protected Memory Module
� Crash Survival:
� Information Retrieval (2-1.16.1)� Survival Criteria (2-1.16.2)� Identification (2-1.16.3)� ULB (2-1.16.4)
Crash Survival Tests
� Crash Survival tests for Crash Protected Memory Module (2-4):
� Impact Shock: 3400g 6.5 ms duration (270 kt / 450 cm)
� Shear and Tensile (ULB attachment):6000 lb (1 min)
Crash Survival Tests
� Penetration: 500 lb 10’ drop
(area 0.25”)
� Static Crush: 5000 lb 5 mins
Crash Survival Tests
� Hi temp fire: 50000 btu/fts/hr (1100 C for 60 mins)
� Lo temp fire: 260 C (10 hrs)
Crash Survival Tests
� Deep sea: 6000 m (30 days)
� Fluid immersion:
Fuel, Oil, etc. 48 hrs
extinguishing agent 8 hrs
Agenda 2:
Development of Capability
Scope
� Undamaged solid-state recorders
� Hong Kong registered aircraft operating scheduled flights
� Capability List –
� Aircraft type / Engine configuration � FDIU / FDIMU� DFDR� Data Rate� Vendor
Capability List for A330
Aircraft
Model No.
Aircraft
Reg. No.Engine
Initial Service
Date (age)(MSN) FDIU / FDIMU DFDR Data Rate (wps) DFDR Vendor
A330-343 B-HLP Trent 772B-60 10-Aug-01 418 ED43B1D7 980-4700-003 128 w/s Honeywell
A330-343 B-HLQ Trent 772B-60 31-Aug-01 420 ED43B1D7 980-4700-003 128 w/s Honeywell
A330-343 B-HLR Trent 772B-60 28-Sep-01 421 ED43B1D7 980-4700-003 128 w/s Honeywell
A330-343 B-HYJ Trent 772B-60 16-Dec-02 512 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-343 B-HYQ Trent 772B-60 19-Mar-04 581 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-343 B-HWF Trent 772B-60 18-Mar-05 654 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-343 B-HWI Trent 772B-60 18-Jan-06 716 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-343 B-HWM Trent 772B-60 31-Oct-13 1457 2234340-02-02 2100-4045-00 1024 w/s L3 Communications
A330-342 B-LAA Trent 772-60 28-Jun-05 669 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-342 B-LAB Trent 772-60 17-Jun-05 673 2288340-01-01 980-4700-042 256 w/s Honeywell
A330-343 B-LAP Trent 772B-60 28-Sep-12 1343 2234340-02-02 2100-4045-00 1024 w/s L3 Communications
A330-343 B-LAQ Trent 772B-60 18-Oct-12 1349 2234340-02-02 2100-4045-00 1024 w/s L3 Communications
A330-343 B-LAR Trent 772B-60 26-Nov-12 1362 2234340-02-02 2100-4045-00 1024 w/s L3 Communications
A330-343 B-LAX Trent 772B-60 01-Dec-12 1366 2234340-02-02 2100-4045-00 1024 w/s L3 Communications
Facility Layout
� Download and Analysis
� Audio Room
� Workshop
Equipment
� Hardware:, Downloader (HHMPI), cables, power source,
computers, bench/desk, etc.
� Software: CAE Flightscape – Insight/Analysis and
Insight/Animation
� Supplemental Info: Data frame structure, aircraft
configuration, etc.
Agenda 3:
Downloading and Analysis
Data Downloading
Data Downloading
� In-situ (FDR only) or Bench
� HHMPI (Hand Held Multiple Purpose Interface)
� Cables (Flight recorder types)
� Power (115VAC 400 Hz / 28 VDC)
115AC/28VDCSource
FDR /CVR
HHMPI
Data Analysis / Animation
� Conversion – raw data to engineering data
� Graphical display of FDR data
Data Analysis / Animation
� Animation of flight profile
� Synchronisation of CVR audio data
Considerations
� Validation of data conversion
� conversion process
� range of data being recorded
Considerations
Considerations
� Sampling rate of recorded data
� Examples of low sampling rate, e.g. Selected
Barometric Setting, Selected Decision Height,
Computed Centre of Gravity, etc
� Examples of high sampling rate, e.g. normal
acceleration, lateral acceleration, longitudinal
acceleration, pitch, roll, yaw, etc
Considerations
� Data handling method in animation
� Linear interpolation
� Average Smoothing
Considerations
� Maintaining confidentiality of CVR data
� 5.12 of Annex 13
� Shop or in-situ erasure of CVR data
Considerations
� Maintaining the Capability
� Review of aircraft type /
configuration
� Obtain data frame structure
� Prepare conversion file
Considerations
� Maintaining the Proficiency
� Practices
� Conferences and workshops
� Cooperation
Thank You
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