CESSNA 172C Airworthiness Directives

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Page 1 of 3 AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(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. Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes AD/CESSNA 170/85 Alternate Static Air Source Selector Valve Placard 3/2009 TX Applicability: Aeroplane models listed in Table 1 of this AD, that: 1. Were initially delivered from the manufacturer between 1 January 1993, and 31 March 2008, unless the modification/rework required in AD/CESSNA 170/83 has been done and the aeroplane remains in compliance with that AD; or 2. Have a alternate static air selector valve part number (P/N) 2013142-18 installed as a replacement part anytime after 1 January 1993, unless the modification/rework required in AD/CESSNA 170/83 has been done and the aeroplane remains in compliance with that AD. Table 1 - Aeroplanes that Could Have the Affected Part Installed 172 172M F172K R172E (USAF T-41B) (USAF T-41C and D) 172A 172N F172L R172F (USAF T-41) 172B 172P F172M R172G (USAF T-41C or D) 172C 172Q F172N R172H (USAF T-41D) 172D 172R F172P R172J 172E 172S FR172E R172K 172F (USAF T-41A) 172RG FR172F 175 172G F172D FR172G 175A 172H (USAF T-41A) F172E FR172H 175B 172I F172F FR172J 175C 172K F172G FR172K 172L F172H P172D COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes AD/CESSNA 170/85 (continued) Page 2 of 3 Note 1: The affected part was shipped from Cessna Parts Distribution (CPD) between 1 January 1993 and 31 March 2008. Note 2: P/N 2013142-18 replaced P/Ns 2013142-9, -13, and -17. Requirement: 1. For all affected aeroplanes that are not equipped for flight under instrument flight rules (IFR) - Inspect the alternate static air source selector valve to assure that the part number identification placard is not obstructing the port. 2. For all affected aeroplanes that are equipped for flight under IFR: a. Inspect the alternate static air source selector valve to assure that the part number identification placard is not obstructing the port; or b. Fabricate a placard that incorporates the following words (using at least 1/8-inch letters) and install this placard on the instrument panel within the pilot’s clear view: “IFR OPERATION IS PROHIBITED” and “USE OF THE ALTERNATE STATIC AIR SOURCE IS PROHIBITED.” 3. For all affected aeroplanes that are equipped for flight under IFR - If placards were installed in accordance with Requirement 2b of this AD, inspect the alternate static air source selector valve to assure that the part number identification placard is not obstructing the port. After doing the inspection, remove the placards installed in accordance with Requirement 2b of this AD before further flight. 4. For all affected aeroplanes - If the alternate static air source selector valve port is found obstructed by the part number identification placard during the inspection detailed in Requirements 1, 2a, and 3 of this AD, remove the placard from the valve body, discard the placard, and assure that the port is open and unobstructed. 5. For all affected aeroplanes - When a replacement valve is needed, only install a P/N 2013142-18 alternate static air source selector valve that has been inspected and the port is found free from obstruction. The procedures required to accomplish this AD are detailed in Cessna Single Engine Service Bulletin SB08-34-02, Revision 1, dated 6 October 2008; Cessna Caravan Service Bulletin CAB08-04, Revision 1, dated 6 October 2008; Cessna Single Engine Service Bulletin SEB08-5, dated 13 October 2008; or Cessna Multi-engine Service Bulletin MEB08-6, dated 13 October 2008, as applicable. Note 3: FAA AD 2008-26-10 Amdt 39-15776 dated 15 December 2008 refers. COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes AD/CESSNA 170/85 (continued) Page 3 of 3 Compliance: For Requirement 1 - Within the next 100 hours time-in-service (TIS) after the effective date of this AD or within the next 4 months after the effective date of this AD, whichever occurs first. For Requirement 2a - Within the next 10 days after the effective date of this AD. For Requirement 2b - Before further flight after the effective date of this AD. For Requirement 3 - Within the next 100 hours TIS after the effective date of this AD or within the next 4 months after the effective date of this AD whichever occurs first. For Requirement 4 - Before further flight after the inspection required in Requirements 1, 2a, and 3 of this AD. For Requirement 5 - As of 10 days after the effective date of this AD. This Airworthiness Directive becomes effective on 16 January 2009. Background: Reports of improper installation of the part number (P/N) identification placard on P/N 2013142-18 alternate static air source selector valves prompted the issue of AD/CESSNA 170/83 in response to the United States Federal Aviation Administration (FAA) issuing AD 2008-10-02. Since then the FAA has received reports of 15 aeroplanes not previously affected by