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PF: Refer to outside visual references. PNF: Assist PF with OANS indications as necessary.
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PNF: In reduced visibility conditions, announce when approaching active runways.
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Before takeoff, when OANS is no longer used, set the minimum ND range to display the first waypoint after departure, or as required for weather purposes.
5.3. REGULATIONS FOR OANS
At the time of writing the present brochure, there is no mandate for the carriage of OANS.
5.4. MANUFACTURER FOR OANS
Thalès and AIRBUS jointly developed OANS. At the time of writing the present brochure, OANS is available on A380 aircraft (basic configuration).
Figure 5-20 provides a simplified view of the OANS architecture.
EFIS CP ND KCCU
Figure 5-20: OANS architecture
5.4.1. UPDATE OF OANS DATABASES
The OANS uses airport databases compliant with ARINC 816 – Embedded interchange Format for Airport Mapping Database. At the time of writing the brochure, only Jeppesen provides ARINC 816 ADB and updates online. Contact your chart provider for more details.
The duration of the upload on aircraft depends on the update file size. The update may take approximately 15 minutes.
5.5. FUTURE SYSTEMS
OANS will take benefits of emerging technologies. The new functions under studies are the integrations of:
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- ADS-B IN data to detect aircraft conflicting with own aircraft path.
- The ATSA-SURF application to display surrounding aircraft on the airport map,
- Data link applications to display NOTAM and ATC ground clearances (e.g. taxi path on airport map).
5.6. DESCRIPTION OF ROW/ROP
The goal of ROW/ROP is to help the flight crew anticipating an overrun of the runway end during the landing phase. ROW/ROP computes braking distances and compares them to the Landing Distance Available (LDA) in real time:
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When the aircraft is on final approach: ROW provides aural and visual indications if the aircraft braking performances are not sufficient to stop on the runway. The flight crew should perform a go-around.
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When the aircraft is on the runway: ROP provides aural and visual indications if the current aircraft braking performances are not sufficient to stop on the runway. ROP applies the maximum braking and the flight crew
The ROW/ROP function is available:
- In all auto brake modes (including Brake To Vacate – BTV, see note below)
- On all runway conditions (dry, wet and contaminated)
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For all aircraft landing configuration (weight, CG, slats/flaps configuration, etc)
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For any wind and visibility conditions within the aircraft envelope
- With or without autopilot.
At present, ROW and ROP are designed for a utilization with an automatic braking only. Refer to 5.10 – Future systems.
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