{"id":"F2008L01360","name":"AD/CESSNA 210/74 - Alternate Static Air Source Valve","slug":"ad-cessna-210-74-alternate-static-air-source-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73618,"registerId":"commonwealth-F2008L01360-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 210 Series Aeroplanes","sectionType":"division","heading":"Cessna 210 Series Aeroplanes","content":"### Cessna 210 Series Aeroplanes\n\n| AD/CESSNA 210/74 | 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
T210F
T210G
T210H
T210J
T210K
T210L
T210M
T210N
T210R

All S/Ns
All S/Ns
All S/Ns
All S/Ns
All S/Ns
All S/Ns
All S/Ns
All S/Ns
All S/Ns
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.

\n```\n\n| | 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. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | 3. Inspect the alternate static air source selector valve to assure that the part number identification placard is not obstructing the port as follows: |\n| | a. Adjust the pilot and copilot seats as far aft as possible. |\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| | 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\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| --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\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| | 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![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n6 May 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 210/74","sectionType":"part","heading":"AD/CESSNA 210/74","content":"## AD/CESSNA 210/74","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":{"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 single part number (P/N 2013142-18) for Cessna 210 series aircraft. The variation allowing records review (Requirement 1.b) is a procedural flexibility that reduces burden without expanding the substantive scope beyond the safety-critical valve inspection."},"complexity_factors":["Single technical subject matter (one valve part number)","Clear sequential requirements (numbered 1-5)","Simple conditional logic (if installed after date X, then inspect; if obstructed, then remove)","Limited cross-references (only one reference to FAA AD 2008-10-02)","Specific applicability table with 10 aircraft models but 'All S/Ns' for each","Two compliance pathways provided (physical inspection vs. records review)","No nested definitions or interpretation sections","Background section clearly explains safety rationale"],"plain_english_summary":"CASA requires owners/operators of certain Cessna 210 (T210F–T210R) aircraft to verify whether replacement valve P/N 2013142‑18 installed after 19 Nov 2007 has its ID label blocking the static air intake. A blocked port can make the altimeter, airspeed and VSI give false readings; if affected the label must be removed before flight. Pilots with a private licence may verify records instead of a physical inspection."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This Directive addresses a single, well-defined hazard: a placard potentially blocking the static-port inlet on a specific part (P/N 2013142-18). The CASA variation (Note 2) relaxes who may certify the records inspection (allowing a private pilot to do so) but does not expand the Directive’s substantive scope beyond inspecting and correcting the identified placard obstruction issue. Therefore the scope has not grown significantly beyond its original safety-focused purpose."},"complexity_factors":["Short, focused directive with 5 numbered Requirements and 3 Notes","Single key defined item: part number P/N 2013142-18 (replacement for -9, -13, -17)","Applies to a narrow set of aircraft models (Cessna 210 series listed in Table 1) with ‘all serial numbers’ for those models","Simple conditional logic: either records check (Requirement 1.b) or physical inspection (Requirement 1.a and 3)","Limited operational procedure steps (seat position, flashlight + mirror) — low technical complexity","One cross-reference to FAA AD 2008-10-02 and a CASA variation allowing private pilot certification (Note 2)"],"plain_english_summary":"**What this directive does (mechanical change):**\n\n- Applies to Cessna 210 series aeroplanes listed in Table 1 that have an alternate static air source selector valve, part number (P/N) 2013142-18, installed after 19 November 2007. (Note: P/N 2013142-18 replaced earlier P/Ns 2013142-9, -13 and -17.)\n- Requires operators to either:\n - Inspect the valve itself following the step-by-step inspection in Requirement 3, or\n - Inspect maintenance records to confirm whether a P/N 2013142-18 valve was installed since 19 November 2007; if no such installation is recorded, no further action is required (Requirement 1.b). CASA permits an operator holding at least a private pilot licence to make and certify this records check (Note 2).\n- If a P/N 2013142-18 valve is present, Requirement 3 prescribes a visual inspection procedure: move pilot and copilot seats fully aft, use a flashlight and mirror to confirm the forward port of the valve is visible and not covered by the manufacturer’s part number identification placard.\n- If the placard is found obstructing the port, the placard must be removed and discarded and the port verified open (Requirement 4).\n- Any P/N 2013142-18 valve installed (as a modification or replacement) on or after the directive’s effective date must be inspected per Requirement 3 prior to installation (Requirement 5).\n- Compliance timing: for the inspections in Requirements 1–3, inspections must be completed before further flight after the directive’s effective date; removal of an obstructing placard must be completed before further flight after that inspection; new/installed parts must be inspected prior to installation.\n\n**Why the rule exists (stated reason and mechanical hazard):**\n\n- The FAA discovered some P/N 2013142-18 valves manufactured between 20 November 2007 and 18 February 2008 had the part number placard installed in a location that covered the valve’s static-port inlet. A placard covering the port can block the static air source, leading to incorrect altimeter, airspeed and vertical speed indications. Incorrect instrument indications can cause pilot reaction to wrong information and may result in loss of control. CASA adopted the FAA advisory action and issued this Directive to ensure affected valves and installed parts do not have the placard blocking the port (Background).\n\n**Who this affects and who pays:**\n\n- Affected parties: Owners and operators of the specified Cessna 210 models that might have had P/N 2013142-18 installed after 19 November 2007; maintenance organisations that install or service these valves; and parts-holders (spare parts holdings).\n- Costs: Mostly one-off compliance costs — time to check maintenance records or perform the visual inspection (Requirement 1 and 3) and, if needed, remove and dispose of a placard (Requirement 4). If the issue is found, there is a small maintenance action (removal of placard and verification). Operators bear these costs. CASA’s permission for a private‑pilot‑licensed operator to certify the records inspection (Note 2) reduces the need to engage a certificated maintenance engineer for that records check, lowering immediate labour cost for some operators.\n\n**How behaviour changes (incentives and operational effects):**\n\n- Operators will inspect maintenance records and physically inspect any installed P/N 2013142-18 valves before flight until the check is complete (Requirements 1–3).\n- Maintenance organisations must inspect any P/N 2013142-18 valve prior to installing it (Requirement 5), creating an installation checkpoint in supply and maintenance workflows.\n- Parts-holders will need to check inventory of P/N 2013142-18 valves to ensure placards are not obstructing ports before issuing parts for installation.\n\n**Implementation, risk and compliance issues:**\n\n- Accessibility and inspection: The inspection requires moving seats aft and using a mirror and flashlight to see the forward port (Requirement 3). Tight cockpit geometry or poor lighting may make inspection awkward, increasing time required or requiring a maintenance bench inspection.\n- Record accuracy: Reliance on maintenance records to avoid physical inspection (Requirement 1.b) assumes accurate, complete records. CASA allows a private pilot to certify this check (Note 2), which lowers cost but relies on the pilot’s ability to read and interpret records.\n- Inventory and traceability: Cessna reported corrected stock at factory but could not verify how many assemblies left with the placard wrongly located. Operators and maintenance organisations must therefore check both installed valves and spares.\n- Operational impact: If an obstructing placard is found, aircraft must be grounded until corrected (Requirement 4 — “before further flight”), which could cause short-term disruption.\n\n**Trade-offs and concentration of effects:**\n\n- The directive imposes a low-to-moderate, one-time compliance burden on many aircraft/operators in order to remove a specific mechanical hazard that could cause severe flight-safety consequences. The safety benefit accrues broadly to pilots and passengers; the compliance cost is concentrated on individual aircraft owners/operators and parts-holders who must perform the checks and any corrective action (Requirements 1–5).\n\n**Relevant technical cross-references in the Directive:**\n\n- Requirement 1: records check or valve inspection (with Note 2 permitting private pilot certification of the records check).\n- Requirement 3: step-by-step inspection method (seats aft, flashlight/mirror, verify port not covered).\n- Requirement 4: removal and discard of obstructing placard and verification before further flight.\n- Requirement 5: inspection of P/N 2013142-18 prior to installation.\n- Background references FAA AD 2008-10-02.\n\n(Sections cited above refer to the numbered Requirements and Notes in the Directive.)"},"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-210-74-alternate-static-air-source-valve","history":"/api/acts/ad-cessna-210-74-alternate-static-air-source-valve/history","analysis":"/api/acts/ad-cessna-210-74-alternate-static-air-source-valve/analysis","conflicts":"/api/acts/ad-cessna-210-74-alternate-static-air-source-valve/conflicts","importantCases":"/api/acts/ad-cessna-210-74-alternate-static-air-source-valve/important-cases","documents":"/api/acts/ad-cessna-210-74-alternate-static-air-source-valve/documents"}}