Safety issue
| Safety issue description |
The International Civil Aviation Organization (ICAO) Annex 14 standards and recommended practices 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. |
|---|---|
| Issue number | AO-2023-043-SI-06 |
| Issue owner | International Civil Aviation Organization |
| Transport function | Aviation: Airports |
| Issue status | Closed – Adequately addressed |
| Date issue released | 11/11/2025 |
| Issue status justification |
Amendment 18 to Annex 14, applicable from 27 November 2025, adequately addresses the safety issue through the provision of conspicuous signage for temporary runway length changes. |
Safety action
| Action type | Proactive action |
|---|---|
| Action number | AO-2023-043-PSA-01 |
| Organisation | International Civil Aviation Organization |
| Action description |
While not undertaken as a result of these occurrences, Amendment 18 to Annex 14, section 7.4.3 includes a requirement to provide conspicuous unserviceability signage to aerodrome movement areas. Of relevance to the safety issue, this includes: 7.4.3.1 Unserviceability signs shall be provided where there is an operational need to indicate temporary changes to runway declared distances. … 7.4.3.10 Unserviceability signs shall consist of an inscription in black on an orange background. Unserviceability signs shall be supplemented by a black outline measuring 10 mm in width for runways where the code number is 1 or 2, and 20 mm in width for runways where the code number is 3 or 4. 7.4.3.11 The inscription on an unserviceability sign shall consist of a legible, clear and simple message, only providing the useful and necessary information for the safety of the operation. 7.4.3.12 Unserviceability signs shall be retroreflective… 7.4.3.13 Recommendation.—Where there is a need to enhance the conspicuity of unserviceability signs, they should be supplemented by two red or yellow simultaneously flashing lights. Figure 20: Examples of unserviceability signs in Amendment 18 to Annex 14 
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| Action status | Closed |