{"id":"F2008L01356","name":"AD/CESSNA 205/24 - Alternate Static Air Source Valve","slug":"ad-cessna-205-24-alternate-static-air-source-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73610,"registerId":"commonwealth-F2008L01356-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 205 (210-5) Series Aeroplanes","sectionType":"division","heading":"Cessna 205 (210-5) Series Aeroplanes","content":"### Cessna 205 (210-5) Series Aeroplanes\n\n| AD/CESSNA 205/24 | Alternate Static Air Source Valve | 7/2008 TX |\n| ---------------- | --------------------------------- | --------- |\n\n```html\n

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)

210-5 (205)

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.

\n```\n\n| | 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. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | 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. |\n| | 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. |\n| | Note 3: FAA AD 2008-10-02 Amdt 39-15508, which becomes effective on 12 May 2008, refers. |\n| Compliance: | For Requirements 1, 2 and 3 - Before further flight after the effective date of this Directive. |\n| | For Requirement 4 - Before further flight after the Requirement 1 inspection. |\n| | For Requirement 5 - As of the effective date of this Directive. |\n| | This Airworthiness Directive becomes effective on 13 May 2008. |\n| Background: | The United States Federal Aviation Administration (FAA) has received reports of improper installation of the part number identification placard on alternate static air source selector valves of certain Cessna 172, 175, 180, 182, 185, 206, 207, 208, 210 and 303 series aeroplanes. The part number identification placard refers to alternative air source selector valves, part number 2013142-18, that were manufactured between 20 November 2007 and 18 February 2008. The part number identification placard was installed on the valve body in a location that covers the port, which is the inlet for static air reference into the valve. The problem was discovered during a quality control check. |\n| | The FAA has advised that all parts held in stock at Cessna have been corrected and that Cessna has no way of verifying how many of these assemblies were manufactured and sent to the field with the part number identification placard installed over the alternate static air source selector valve port. The Civil Aviation Safety Authority (CASA) has no way of determining which aeroplanes have the remaining problem alternate static air source selector valve assemblies installed without having all of the affected aeroplanes and spares stock inspected. |\n| | This condition, if not corrected, could result in the altimeter, airspeed, and vertical speed indicators displaying erroneous indications. This could cause the pilot to react to incorrect flight information and possibly result in loss of control. |\n\n| | CASA has varied the inspection requirements to allow the aeroplane operator to determine if a P/N 2013142-18 selector valve has been installed since 19 November 2007. |\n| --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n6 May 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 205/24","sectionType":"part","heading":"AD/CESSNA 205/24","content":"## AD/CESSNA 205/24","sortOrder":1},{"sectionNumber":"Alternate Static Air Source Valve","sectionType":"part","heading":"Alternate Static Air Source Valve","content":"## Alternate Static Air Source Valve","sortOrder":2},{"sectionNumber":"7/2008 TX","sectionType":"part","heading":"7/2008 TX","content":"## 7/2008 TX","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"CASA varied the inspection obligation from the FAA AD by allowing an initial determination via maintenance records rather than mandating immediate physical inspection of every aeroplane (see \"CASA has varied the inspection requirements\" and Requirement 1.b). Note 2 permits the aeroplane operator (with at least a private pilot licence) to perform and certify the records check, narrowing the immediate inspection burden on operators but preserving the obligation to perform a physical inspection if P/N 2013142-18 is found to have been installed (Requirements 2 and 3; Compliance)."},"complexity_factors":["Narrow applicability tied to a specific part number and installation date (P/N 2013142-18 installed after 19 November 2007) (Table 1, Applicability).","Two-step compliance path: either a records check or a physical inspection (Requirement 1.a and 1.b), creating conditional obligations.","Physical inspection has procedural detail (seat adjustment; use of flashlight and mirror to view forward port) that may require tools/assistance (Requirement 3.a–b).","Allowing the aeroplane operator with at least a private pilot licence to certify the records check shifts responsibility and affects who may legally certify compliance (Note 2).","Timing constraints require actions before further flight and, for new parts, inspection before installation, affecting maintenance scheduling and parts management (Compliance; Requirement 5).","Interaction with FAA AD and international supply chains: CASA references FAA AD 2008-10-02 and notes Cessna’s corrected stock but cannot trace already-dispersed parts, creating inventory/traceability burdens (Background; Note 3)."],"plain_english_summary":"This Directive requires owners/operators of Cessna 205 (210-5) aeroplanes fitted since 19 November 2007 with alternate static air source selector valve P/N 2013142-18 to verify the valve isn’t blocked by its part-number placard and to remove the placard if it obstructs the port. It also lets operators check maintenance records to confirm whether the affected part was ever installed.\n\nOperators (or an operator holding at least a private pilot licence) must complete the record check and any necessary physical inspection before further flight; compliance costs fall to aeroplane owners/operators and to whoever installs or certifies replacement parts."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific manufacturing defect in a specific part (P/N 2013142-18) for a specific aircraft model. The variation allowing operator record review (Note 2) is a practical administrative relief that doesn't expand the substantive scope beyond the safety issue."},"complexity_factors":["Single specific aircraft model and part number scope (narrow applicability)","Clear alternative compliance paths (Requirement 1.a vs 1.b)","Simple conditional logic: if installed after date X, then inspect; if records show no replacement, then no action","Straightforward physical inspection procedure (visual check with flashlight/mirror)","Only 5 numbered requirements with minimal cross-referencing","No nested definitions or interpretation sections","Background section clearly explains safety rationale","Note 2 provides a practical delegation (private pilots can certify record review)"],"plain_english_summary":"This CASA Airworthiness Directive orders owners/operators of Cessna 205 (210‑5) aeroplanes with alternate static air source selector valve P/N 2013142‑18 (installed after 19 Nov 2007) to verify the valve isn’t fitted with a label blocking its air intake. A blocked port can cause false altimeter, airspeed and VSI readings and risk loss of control. Before the next flight after 13 May 2008, either physically inspect the valve or check maintenance records; remove any obstructing label immediately."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve","history":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve/history","analysis":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve/analysis","conflicts":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve/conflicts","importantCases":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve/important-cases","documents":"/api/acts/ad-cessna-205-24-alternate-static-air-source-valve/documents"}}