Operational Landing Distances

Operational Landing DistancesImplementing TALPA ARC

SAPOE Meeting 2011Operational Landing Distances

Presented byThierry PAYA-ARNAUD / Performance Expert, Airbus Flight Operations Support

SAPOE October 6-7, 2011

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

PERFORMANCE



Definition of Operational Landing Distance

• Realistic airborne part

• 6 braking performance levels• Labelled by Reported Braking Action (RBA)• Good, Medium, Poor and intermediates• Matrix becomes compulsory point of entry


• All relevant parameters considered• Pressure altitude• Planned approach speed• Outside temperature and wind• Runway slope• Reverse thrust use


6 friction levels


0.1

0.2

0.3

0.4

0.5

0.6

20m/s 40m/s 60m/s 80m/s 100m/s


Landing Distance Definitions


50ft

TouchdownVTD

ThresholdVAPP

Airborne Distance

µBSpray ImpingementDrag Aquaplaning

Displacement Drag

• ALD – Actual Landing Distance• RLD – Required Landing Distance (Dispatch) = ALD x FDISPATCH

• OLD – Operational Landing Distance• FOLD – Factored Operational Landing Distance = OLD x 1.15

Ground DistanceFull Stop


Landing Distances: Legacy vs. TALPA ARC


Air GroundMargin

ALD

OLD FOLD

DRYDRY

WETGOOD

COMPACTED SNOWGOOD TO MEDIUM

SLUSHMEDIUM TO POOR

STANDING WATERMEDIUM TO POOR

ICEPOOR

500m 1000m 1500m 2000m 2500m 3000m

BOTH BASED ON MAX BRAKING FROM TOUCHDOWN

LOOSE SNOWMEDIUM

NO CURRENT STANDARD

RLD


A320 in Tegucigalpa / Honduras

MHTG/TGU RWY 02

LDA 5410ft / 1649m

Elevation 3287ft

CONF FULL / VREF+5 / no wind / OAT 20ºC

LW

Dry 64.5t

Wet 59.9t

Standing Water 53.8t


Limited by MLW / Dispatch

OLD FOLD

Dry 1330m 1520m (no rev)

Good 1600m 1830m (all rev)

Med to Poor 1910m 2200m (all rev)


IMPLEMENTATION BY AIRBUS



Rulemaking Update



21-24 March 2011 17th Flight Safety Conference

Airbus Implementation Schedule



• For all Airbus aircraft• At least “Minimum Compliance” with new principles

• Cover all 6 friction levels• Accountability for

• Temperature effect• Runway slope effect• Approach speed increment effect

• All Performance data sources• Flight Ops Engineer Software• Flight Manual• Operational Documentation• Electronic Flight Bag• Training Material

Operational Landing Distances

OLD Implementation by Airbus

SAPOE Meeting 2011


Operational Documentation - QRH



EFB Landing Application



Conclusion


• Airbus adopts TALPA ARC standard for in-flight landing performance

• Realistic computation basis for all winter runway conditions

• In current environment, pilot must compensate for non yet compliant Runway Condition Reporting

• Major safety improvement requires



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