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Published byJabari Hamling Modified over 9 years ago
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10-11-12-13 September 2002-MoroccoARAB INSTRUMENT PROCEDURE DESIGN SEMINAR 1 STAND-ALONE APPROACH OPERATIONS FOR CLASS A GPS
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Approbation GPS classe A sur approche2 DOCUMENTATION Basic documents TSO C129() TGL( Temporary guidance Leaflet 3 rev 1 French technic note SFACT/N.ST/AVI N°1 Future TGL on Approach operations in progress
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Approbation GPS classe A sur approche3 INSTALLATION GPS CLASSE A TYPE HSI 1 Interface aéronef (altitude,cap,..). Antenne GPS 1 NAV MSG GPS WPTAPPR FAF 23 IAF 23IF 23 MAP 23 230° BRL LFYY Annonciateurs extérieurs OBS 2 Antenne GPS 2 XTLK 2.6 Nm NAV MSG GPS WPTAPPR GPS 1 GPS 2 Installation à titre d ’information
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Approbation GPS classe A sur approche4 TROUBLES Ergonomy Ergonomy adequate integration in the aircraft Data base contents No mandate to be in compliance with ARINC code 424 Troubles with CF path terminatorCF path terminator Direction of turn Direction of turn Bad turn inititation
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Approbation GPS classe A sur approche5 PATH TERMINATOR Class A can interpretate very few Path terminator eg: TF Solution : use only TF as in Y and T concept
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Approbation GPS classe A sur approche6 EUROPE AIRWORTHINESS POINT OF WIEW Equipment requirement: TSO C 129a Class A1 Improvement of integrity requirement. Improvement of Mode Activation TSO C129 is acceptable if previous criteria are achieved. Validation of turn initiation criteria Compliant with ED 75 (RNP MASP) or equivalent. Lot of gaps in TSO C129
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Approbation GPS classe A sur approche7 Validation and checking of the on board material based on specific flight trials To carry out at least 3 approach procedure. Evaluation of the turn initiation fonction Evaluation of Missed approach phase with autopilot. Evaluation of FTE (manual, flight director and autopilot) TGL devoted to approach ( RNP 0.3) Solution can be « T » or « Y » approach. Recommeded function :Display system as electornic map WHAT PROPOSALS?
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Approbation GPS classe A sur approche8 IAF Y BAR DESIGN CONCEPT IF FAF MAPt Turn initiation 70° INITIAL SEGMENT INTERMEDIATE SEGMENT FINAL SEGMENT TF coding
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Approbation GPS classe A sur approche9 T BAR DESIGN CONCEPT IF FAF MAPt Turn initiation IAF 90° INITIAL SEGMENT INTERMEDIATE SEGMENT FINAL SEGMENT
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Approbation GPS classe A sur approche10 APPROACH CONSTRAINT Length minimum = stabilization distance (MSD) Initial : Optimal 5 Nm Intermediate : min 2 Nm + MSD Final : Optimal 5 Nm AREA IAWP, MATWP,MAHWP : 1/2 AW = 5Nm XTT = 1.5 Nm ATT = 1 Nm FAWP : 1/2 AW = 2Nm XTT =0.6 Nm ATT = 0.3 Nm MAWP : 1/2 AW = 1Nm XTT =0.5 Nm ATT = 0.3 Nm Descent Gradient Initial max: 8% optimal :4 % Final [ 6.5 cat A/B / 6.1 CAT C/D, 4.3 %] optimal : 5 %
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Approbation GPS classe A sur approche11 DESCENT GRADIENT CALCULATION A IAWP IWP FAWP A/2 B B/2 D TRD = D -(r* tanB/2) - ( r *tanA/2 ) + (r* /180*B/2) + (r* /180* A/2) Gradient = h / TRD
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GNSS Protection area for initial segment IAWP IWP FAWP A D D = R.Tan(A/2)+ATT
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Approbation GPS classe A sur approche13 NOW IT IS TIME FOR TRIALS !
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Approbation GPS classe A sur approche14 034° Solution : USE TF path terminator PAMIERS DEPARURE
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Approbation GPS classe A sur approche15Montpellier Solution : USE another WP to impose the turn direction
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Approbation GPS classe A sur approche16 Information of GPS Activation Visual Primary field
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