Document ID: chunk:federal_register_of_legislation:F2008L01362:body:0:p1
Version: federal_register_of_legislation:F2008L01362
Segment Type: other
Provision Reference: 
Character Range: 0–3625

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 207 Series Aeroplanes
AD/CESSNA 207/39  Alternate Static Air Source Valve  7/2008 TX

Applicability:  Aeroplanes models listed in Table 1 that have an alternate static air source selector valve, part number (P/N) 2013142-18, installed after 19 November 2007.
                Table 1--Applicability for Aeroplanes that Could Have Had the Affected
                Part Installed as a Replacement Part or From Parts Held as Spares
                Model                                                                                                                                                                                                                                                Serial Numbers (S/N)
                207                                                                                                                                                                                                                                                  All S/Ns
                Note 1:  P/N 2013142-18 replaced P/Ns 2013142-9, -13 and -17.
Requirement:       1. For aeroplanes listed in Table 1 - Either:
                     a. Inspect the alternate static air source selector valve in accordance with Requirement 3, or
                     b. Inspect the aeroplane's maintenance records to determine if the alternate static air source selector valve has been replaced since 19 November 2007 with P/N 2013142-18, if the valve has not been replaced no further action is necessary.
                Note 2:  The Requirement 1.b. inspection and determination may be accomplished and certified for by the aeroplane operator, provided that they hold at least a private pilot's licence.
                   2. If the Requirement 1.b. determination indicates that a P/N 2013142-18 alternate static air source selector valve has been installed inspect the valve in accordance with Requirement 3.
                   3. Inspect the alternate static air source selector valve to assure that the part number identification placard is not obstructing the port as follows:
                     a. Adjust the pilot and copilot seats as far aft as possible.

                  b. Use a flashlight and mirror to inspect the alternate static air source selector valve to assure the port on the forward end of the valve is clearly visible and not covered by the part number identification placard.
                4. If, during any Requirement 3 inspection, the alternate static air source selector valve port is found obstructed by the part number identification placard, remove the placard from the valve body, discard the placard and assure that the port is open and unobstructed.
                5. Static air source selector valves P/N 2013142-18 installed as modification or replacement parts on or after the effective date of this Directive must be inspected in accordance with Requirement 3 prior to installation.
             Note 3: