Euromed GNSS II / MEDUSA project

Egypt national workshop, CAIRO - 12 March 2014 - NANSC

Civil AviationEGNOS/GNSS service usage, strategies and recommendations

Airliner :

Egypt AirEgypt Air Airlines

EGNOS Benefits - General EGNOS Benefits - approach (LPV) in comparison with NPA

Example : Lower DH and lower minima EGNOS Benefits - approach (LPV) in comparison with Baro-VNAV

Example : Human error and many corrections EGNOS Benefits - approach (LPV) in comparison with ILS

Example : Doubtful trust in ILS serviceability GALILEO Benefits Airline fleet ; related capabilities Expectations

EGNOSBenefits General

More accurate navigation More reliable navigation ( use / don’t use , estimated residual positioning error : Integrity )

( horizontal Alert Limit from 0.3 NM (556m) to 40 m ) ( Vertical Alert Limit 50 m )

Africa has an appropriate location (EGNOS foot print/EGNOS extension to cover North-Africa ) and is in need

Over half of all accidents occur during the final approach and landing stages

LPV benefits

# NPA

Lower decision height , lower minimaStable Airspeed , ROD* and FPA* (No intermediate step down ) Flight Director is a command instrument CFIT decreases Minimize arrival flight time and hence fuelReduce noise levels# NPA has a low safety record (most common accident/incident cause is descent below MDA(H)

EGNOSBenefits Approach

* ROD : Rate of Descent (ft/min) , FPA : Flight path angle

Safety increasesDelay and Cancellation of flights decreases

(i.e. Aerodrome capacity gain in low visibility)Diversion decreases

LPV # NPA

Lower DH and lower minima LFBDBordeaux MerignacRNAV (GNSS) Rwy 05

LPV benefits

# Baro VNAV

Baro VNAV is restricted to a minimum temperatureAltimetry is based on ISA density variation

Cold temperature correction Low pressure correction Hot temperature neglected although affecting

Destination altimeter subscale setting and human errorCheck by RA and EGPWS (2500’ AGL) (workload)

LPV # VNAV

Human Error / Many Corrections

Effect of one inch high altimeter setting

Unusual barometric pressure , such as 28.29 in Hg (low pressure) , when “in Hg” unit is used ,may be set , by mistake , to a more usual 29.29 in Hg ,resulting-in the true altitude (i.e. the aircraft’s actual height above MSL , being 1000 ft lower than indicated .

In most of baro-VNAV approach

LPV benefits

# ILS

Dependant on an international sourceDepends on national management / local navaid

A/C Flight path is loaded in the A/C Nav. Data BaseBroadcasted

Extends its service to all runwaysEach runway is “funded” individually

A0999/14 NOTAMR A0998/14Q) XXXX/QNAAO/IV/B/AE/000/999/….N…..E…A) XXXX B) 1401160733 C) PERM E) TRUST US AND DO NOT BELIEVE WHAT THE PILOTS SAY.THE ILS IS OKAY AND OPERATIONAL 100%.CREATED: 16 Jan 2014 07:41:00 SOURCE: XXXXYNYX

LPV # ILS

TRUST

‼ It happened : (a) flight(s) was(were) dispatched , with marginal weather conditions , according to the ILS minima, and after their return, the crew reported that the ILS was U/S .

( FICTIONAL NOTAM )

GALILEOBenefits

EGNOS is paving the path for GALILEO

Under civilian control

Interoperable with GPS and GLONASS

More increase in navigation positioning accuracy

Is vital where there is a lack of ground based navigation solution

Airline FleetRelated Capabilities

GPS receivers , autopilot and navigation system will need updating to be EGNOS capable RNP 4 is in progress ( for RNP 10 A/C’s )

GPS RNAV APCH RNAV 1 RNAV 100%

10%20%30%40%50%60%70%80%90%

100%

9375

95

50

725

5

40

EGNOS/GALILEOExpectations

More extension/coverage over Africa

More routes/airspaces based on GNSS and PBN capabilities

Technical assistance , training and cost-benefit analyses are expected

Thank you for your attention

Mérci pour votre attention

الله رحمة و عليكم السالم

Haytham Zaki abdelLatifSenior Flight dispatcherEgypt Air Airline

Email : . .Haytham Zaky@egyptair comE mail : haytham_z_a@yahoo.com

Under Supervision ofCaptain / Mohamed Elian - G.M.IOCC Captain / Ayman Ghoneim - Deputy G.M.IOCC