Transcript Slide 1
Euromed GNSS II / MEDUSA project
Civil Aviation
EGNOS/GNSS service usage, strategies and recommendations
Airliner :
Egypt Air
Egypt Air Airlines
Egypt national workshop, CAIRO - 12 March 2014 - NANSC
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
EGNOS
Benefits
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
EGNOS
Benefits
Approach
LPV
benefits
# NPA
Lower decision height , lower minima
Stable Airspeed , ROD* and FPA* (No intermediate step down )
Flight Director is a command instrument
CFIT decreases
Minimize arrival flight time and hence fuel
Reduce noise levels
# NPA has a low safety record (most common
accident/incident cause is descent below MDA(H)
Safety increases
Delay and Cancellation of flights decreases
(i.e. Aerodrome capacity gain in low visibility)
Diversion decreases
* ROD : Rate of Descent (ft/min) , FPA : Flight path angle
LPV
#
NPA
Lower DH and lower minima
LFBD
Bordeaux Merignac
RNAV (GNSS) Rwy 05
# Baro VNAV
LPV
benefits
Baro VNAV is restricted to a minimum temperature
Altimetry is based on ISA density variation
Cold temperature correction
Low pressure correction
Hot temperature neglected although affecting
Destination altimeter subscale setting and human error
Check 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
# ILS
LPV
benefits
Dependant on an international source
Depends on national management / local navaid
A/C Flight path is loaded in the A/C Nav. Data Base
Broadcasted
Extends its service to all runways
Each runway is “funded” individually
LPV
#
ILS
TRUST
A0999/14 NOTAMR A0998/14
Q) 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
( FICTIONAL NOTAM )
‼ 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 .
GALILEO
Benefits
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 Fleet
Related Capabilities
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
GPS receivers , autopilot and navigation system
will need updating to be EGNOS capable
RNP 4 is in progress ( for RNP 10 A/C’s )
5
7
25
40
95
93
75
50
GPS
RNAV APCH
RNAV 1
RNAV 10
EGNOS/GALILEO
Expectations
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
السالم عليكم و رحمة هللا
Under Supervision of
Captain / Mohamed Elian - G.M.IOCC
Captain / Ayman Ghoneim - Deputy G.M.IOCC
Haytham Zaki abdelLatif
Senior Flight dispatcher
Egypt Air Airline
Email : [email protected]
E mail : [email protected]