The Part 139 (Aerodromes) Manual of Standards 2019 did not recommend, or provide standardised options for, movement area guidance signs or other visual aids to provide enhanced flight crew situational awareness of temporary changes to the runway length available for take-off.
To be advised
Regarding the introduction of visual aids into the Part 139 (Aerodromes) Manual of Standards 2019 (Part 139 MOS), CASA advised on 29 October 2025 that:
Amendment 18 to Annex 14 Volume II, announced in State Letter 25/23 in August 2025 becomes applicable in November 2025. CASA is reviewing the introduction of new SARPs [standards and recommended practices] in Annex 14 and will work with industry on the inclusion of those standards. The effort to address the content in Amendment 18 is part of the normal regulatory change program. As part of that process, CASA is obliged to consider the economic and cost impact of the standards CASA sets, and the differing risks associated with different sectors of industry (refer CASA Statement of Intent 2023-2025).
The review of Amendment 18 to Annex 14 Volume I will consider the draft ATSB safety issue as part of CASA’s assessment and decision-making process.
The ATSB acknowledges that CASA’s review of Amendment 18 to Annex 14 will occur as part of its normal regulatory review process, and will monitor outcomes for progress towards addressing this safety issue.
