Document ID: chunk:federal_register_of_legislation:F2010L01095:body:0:p2
Version: federal_register_of_legislation:F2010L01095
Segment Type: other
Provision Reference: 
Character Range: 5564–8985

incorporated during production.
                   b. Bombardier CL-600-2B19 aeroplanes if modified in accordance with Bombardier SB 601R-34-146.
                   c. Bombardier DHC-8-100/200/300 series aeroplane if modified in accordance with MODSUM IS8Q2450012.
                   d. Dassault aeroplanes modified in accordance with Dassault Aviation SB
                   F50-457 (modifications M2966 and M2968), SB F50-469 (modification M2998), SB F900-354 (modification M3896), SB F900-368 (modification M5013), SB F900EX-239 (modification M3896), SB F900EX-270 (modification M5013), F2000-312 (modifications M2624 and M2632),
                   SB F2000-327 (modification M2468), SB F2000EX-043 (modification M2624) or SB F2000EX-084 (modification M2468).
                 2. For all affected helicopters - Verify that the transponder Air/Ground discrete input connections are installed in accordance with Table 1 of Rockwell Collins Service Information Letter TDR-94(  ) SIL 07-1 dated 25 May 2007 (document reference 523-0809129-001000).  If the wiring installation is not compliant with the information provided in Table 1 of the SIL, modify the aeroplane Air/Ground discrete input connections in accordance with approved aeroplane modification instructions.

             Note 3:  EASA AD 2010-0067 refers.
Compliance:  For Requirement 1 - Before 26 March 2011.
             For Requirement 2 - Within 12 months after the effective date of this Amendment.
             This Amendment becomes effective on 10 May 2010.
Background:  Airservices Australia, the Australian Air Navigation Service Provider (ANSP) together with other national ANSPs, have implemented Advanced Surface Movement Guidance & Control Systems (A-SMGCS) to improve the surveillance and control of on-ground aeroplanes and vehicles, providing conflict detection and alerting on runways.
             In order to ensure proper and effective operation of the A-SMGCS, transponder replies to Air Traffic Control Radar Beacon System (ATCRBS) and All-Call interrogations must be inhibited when the aeroplane is on ground.
             Rockwell Collins TDR-94 and TDR-94D Mode S Transponders have two Air/Ground Discrete inputs that may be connected to the aeroplane Weight-On-Wheels system.  A connection to the Air/Ground #2 discrete will implement an inhibition of ATCRBS, ATCRBS/Mode-S All-Call and Mode-S Only All-Call replies when the aeroplane is on the ground.  No on-ground reply inhibition occurs if the connection is to the Air/Ground #1 discrete.
             An aeroplane with this transponder interface problem, if not corrected, does not meet the specifications of International Civil Aviation Organisation (ICAO) Annex 10 to the Convention on International Civil Aviation Volume IV Amendment 77 Section 3.1.2.10.3.10 - Inhibition of replies which would lead to degradation of the functioning of the A-SMGCS, could affect the ATC functions in tower, approach and en-route sectors, increase the risk of undetected runway incursions and endangering the aeroplane, its occupants and persons on the ground.
             For these reasons, the original issue of this Directive required a check of the transponder Air/Ground discrete input connections and, in case of discrepancies, the accomplishment of corrective action.
             Since the original issue of this Directive was issued, the European Aviation Safety Agency (EASA) has