September 2002-MoroccoARAB INSTRUMENT PROCEDURE DESIGN SEMINAR 1 STAND-ALONE APPROACH OPERATIONS FOR CLASS A GPS

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

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 ° 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

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

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

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

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?

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

Approbation GPS classe A sur approche9 T BAR DESIGN CONCEPT IF FAF MAPt Turn initiation IAF 90° INITIAL SEGMENT INTERMEDIATE SEGMENT FINAL SEGMENT

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 %

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

GNSS Protection area for initial segment IAWP IWP FAWP A D D = R.Tan(A/2)+ATT

Approbation GPS classe A sur approche13 NOW IT IS TIME FOR TRIALS !

Approbation GPS classe A sur approche14 034° Solution : USE TF path terminator PAMIERS DEPARURE

Approbation GPS classe A sur approche15Montpellier Solution : USE another WP to impose the turn direction

Approbation GPS classe A sur approche16 Information of GPS Activation Visual Primary field