Federal Register of Legislation
AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/INST/49 and issues the following AD under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Instruments and Automatic Pilots
AD/INST/49 Amdt 1
Rockwell Collins Air Data Computers 6/2003
Applicability: All Rockwell Collins air data computers (ADC) listed below; except ADC-85A computers part number 822-0370-113 or -123 with Rockwell Collins Service Bulletin (SB) 58 incorporated and installed on Saab 340 series aeroplanes.
Unit Part Number Serial Number ADC-85 622-8051-002 All units (Incorporating Rockwell Collins 622-8051-003 Service Bulletin (SB) 58) ADC-85A 822-0370-113 All units (Incorporating SB 58) 822-0370-123 822-0370-139 822-0370-404 822-0370-408 ADC-850D 822-0389-133 All up to and including (Incorporating SB 58) 3DGW (except for 1P6D, 22RC-22RF and 23WK- 3DGP) ADC-850F 822-1036-406 All Units 822-1036-418
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