Silicone Sensor
Light / Pliable / Self-adhesive / Inexpensive
1 cm 1 cm
CV Switch
no crack
Test Piece
Fatigue, torsion, vibration,
etc
Silicone sensor
(self adhesive)
Tubing (PTFE)
Vacuum
Terminals
- Stop test
- Or alarm
- Or send signal
Pressure Switch
Sensor gallery
Side View
•No crack breaching vacuum
in sensor gallery
•Switch contact remains
open
Structural Monitoring Systems Proprietary
CV Switch
crack detected
Tubing (PTFE)
Vacuum
Pressure Switch
Crack
Plan View
•Surface Crack breaches
sensor gallery
•Switch contacts close
•Test stopped / alarm signal /
remote signal sent……
Structural Monitoring Systems Proprietary
Test Lab Setup
DIN mounted CV Switches
Pulsing Rig
Test Set-up
Test Lab Setup
•Shorter design / verify cycles
•Less labor intensive
•More accurate crack initiation detection
•Cycle count when crack is < 1mm
CVM benefits
• Shorter design / verify cycle
• More accurate crack detection
- cycle count at <1mm crack
• Less labor required
• Better testing facility utilisation
ATSB TRANSPORT SAFETY REPORT
Aviation Occurrence Investigation AO-2008-070
Interim Factual
In-flight upset
154 km west of Learmonth, WA
7 October 2008
VH-QPA
Airbus A330-303
- i -
ATSB TRANSPORT SAFETY REPORT
Aviation Occurrence Investigation
AO-2008-070
Interim Factual
In-flight upset
154 km west of Learmonth, WA
7 October 2008
VH-QPA
Airbus A330-303
Released in accordance with section 25 of the Transport Safety Investigation Act 2003
- ii -
Published by: Australian Transport Safety Bureau
Postal address: PO Box 967, Civic Square ACT 2608
Office location: 62 Northbourne Ave, Canberra City, Australian Capital Territory
Telephone: 1800 020 616; from overseas + 61 2 6257 4150
Accident and incident notification: 1800 011 034 (24 hours)
Facsimile: 02 6247 3117; from overseas + 61 2 6247 3117
E-mail: atsbinfo@atsb.gov.au
Internet: www.atsb.gov.au
© Commonwealth of Australia 2009.
This work is copyright. In the interests of enhancing the value of the information contained in this
publication you may copy, download, display, print, reproduce and distribute this material in
unaltered form (retaining this notice). However, copyright in the material obtained from other
agencies, private individuals or organisations, belongs to those agencies, individuals or
organisations. Where you want to use their material you will need to contact them directly.
Subject to the provisions of the Copyright Act 1968, you must not make any other use of the
material in this publication unless you have the permission of the Australian Transport Safety
Bureau.
Please direct requests for further information or authorisation to:
Commonwealth Copyright Administration, Copyright Law Branch
Attorney-General’s Department, Robert Garran Offices, National Circuit, Barton ACT 2600
www.ag.gov.au/cca
ISBN and formal report title: see ‘Document retrieval information’ on page i.
- iii -
CONTENTS
THE AUSTRALIAN TRANSPORT SAFETY BUREAU ................................ vii
ABBREVIATIONS.............................................................................................. viii
FACTUAL INFORMATION ................................................................................ 1
History of the flight........................................................................................... 1
Injuries to persons............................................................................................. 4
Damage to the aircraft....................................................................................... 5
Personnel information....................................................................................... 7
Aircraft information .......................................................................................... 7
General information.............................................................................. 7
Flight control system ............................................................................ 8
Air data and inertial reference system .................................................. 9
Meteorological information ............................................................................ 13
Flight recorders ............................................................................................... 14
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