A risk assessment for mooring a ship at the inner moorings had never been undertaken. As a result, the risks associated with leaving a ship at the inner moorings overnight during the swell season were not properly identified and strategies to minimise those risks were not implemented.
While the pilot provided limited advice to masters of ships visiting Christmas Island, the port operator did not provide the master of ships intending to berth using the buoys in Flying Fish Cove with any written or verbal guidance regarding berthing and unberthing arrangements and emergency contingencies.
The port operator was aware that the type of locking pin arrangement on the cantilever line joining shackle was not effective in preventing the shackle’s pin from working its way free. However, the operator had not implemented a program of replacing the shackles in the entire mooring system in Flying Fish Cove with new shackles that had a more robust locking pin arrangement.
The port operator had not implemented an effective planned inspection and maintenance program for the mooring system in Flying Fish Cove. Consequently, it had been 18 months since the underwater components of the cantilever line had been inspected.
The helicopter’s lighting set-up did not allow independent control of the searchlights by the pilot using the switches on the flight controls, as required by the operations manual and Civil Aviation Order 29.11, and increased the risk of loss of hover reference and distraction in the case of a single light failure or switch mis‑selection by a pilot.
The increased capability of helicopters and rescue winches enabled the conduct of complex winch rescues beyond the current level of winch training and procedural support associated with the traditional special casualty access team clinical access role, leading to an increased risk that hazards associated with complex rescues were not identified.
Ambulance rescue crewmen did not conduct any night winching recency training, resulting in an increased risk of unfamiliarity with night winching procedures and their associated hazards.
The accepted use of procedural adaptation by special casualty access team paramedics, and the past success of rescues that involved adapted techniques, probably led to the retrieval procedure that was used on the night.
A significant number of R44 helicopters, including VH-COK, were not fitted with bladder-type fuel tanks and the other modifications detailed in the manufacturer's Service Bulletin, SB-78 to improve resistance to post?impact fuel leaks and fire.
RailCorp’s acceptance testing regime for tail pins did not identify that the tail pins stamped BU 06 04 were below standard and, hence, not suitable for service.
The method used to ultrasonically test the tail pins in-situ was not reliable and resulted in small fatigue cracks going undetected.
There were some minor non-conformances with the level crossing signage, in particular the ‘Stop’ sign assembly and positioning of the ‘Stop’ line on the western side of the Port Flinders Causeway Road level crossing.
Aircraft operations with an enlarged hopper but no associated recalibration of the hopper level sight gauge increased the potential for operations at an uncertain aircraft operating weight, and therefore risk of operations in excess of the published aircraft limitations.
There was limited assurance that M18 and M18A Dromader aircraft incorporating Supplemental Type Certificate SVA521 would exhibit acceptable handling and performance characteristics if not fitted with vortex generators and M18B standard elevators, in particular that the risk of longitudinal instability had been reliably addressed.
There was a potential, depending on the supplements that were incorporated in an aircraft’s flight manual, for pilots and/or operators to apply incorrect operational limitations to agricultural operations in M18 and M18A Dromader aircraft at weights between 4,200 kg and 5,300 kg. This increased the risk of their inconsistent application to these operations, and the likelihood of the unknowing erosion of engineering safety margins and aircraft life.
M18 Dromader aircraft were being operated in the agricultural role at weights for which a 15° bank angle limitation had effect, whereas the nature of agricultural operations increased the risk of pilots exceeding that limitation.
There were no formalised processes for a driver-in-training to record their experience in learning a route, or to document feedback related to their performance, which could be used by supervising drivers or assessors to assist in mentoring them.
Specialised Bulk Rail’s Safety Management System procedures did not provide the supervising drivers with sufficient direction as to the nature of their supervisory role.
Worker competency procedures were deficient in providing a structured program for the development of route knowledge by the driver-in-training.
SBR’s process for assessing its drivers’ roster for relay operations relied excessively on a score produced by a bio-mathematical model, and it had limited mechanisms in place to ensure drivers received an adequate quantity and quality of sleep during relay operations.
