CASA has identified recurring maintenance documentation issues in the helicopter sector following recent surveillance activities in northern Australia, warning that incomplete practices are resulting in aircraft being released to service without a full picture of their airworthiness.
Inspections have revealed gaps including mandatory components not clearly verified, removable equipment not presented for maintenance, and operator modifications not fully considered at certification. CASA says these are day-to-day practices that, when missed, create a real safety risk.
The regulator has issued reminders to engineers, pilots and operators about their respective responsibilities.
Engineers issuing maintenance releases are certifying that an aircraft is serviceable for its intended operation, and CASA says this must reflect the full condition of the aircraft. Engineers are reminded to carefully review operator modifications, ensure certification through a maintenance release meets the same standard as aircraft logbook entries and complies with CASA Schedule 6, and record and transfer all maintenance requirements appropriately.
Pilots are reminded they are often the last line of defence before flight. CASA is urging pilots to raise and report any maintenance concerns, no matter how minor, through their organisation's safety management system or CASA reporting channels, and to be aware that incomplete or inaccurate maintenance certification can affect their safety.
Operators are reminded to ensure all components requiring maintenance are provided to the maintenance organisation, including removable equipment such as doors, cargo baskets and aerial application equipment, and that operator modifications are clearly identified during certification. Accurate recording of aircraft hours to support component life limit tracking is also highlighted, along with a reminder to review maintenance requirements for automatic and survival emergency location transmitters.
CASA notes the registered operator carries the ultimate legal responsibility for the airworthiness of an aircraft.