{"id":"F2009L00057","name":"AD/CESSNA 210/75 - Alternate Static Air Source Selector Valve Placard","slug":"ad-cessna-210-75-alternate-static-air-source-selector-valve-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76468,"registerId":"commonwealth-F2009L00057-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 210/75 | Alternate Static Air SourceSelector Valve Placard | 3/2009 TX |\n| ---------------- | ------------------------------------------------- | --------- |\n\n```html\n

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 210/74 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 210/74 has been done and the aeroplane remains in compliance with that AD.

Table 1 - Aeroplanes that Could Have the Affected Part Installed

210

210G

210R

T210K

210A

210H

210-5 (205)

T210L

210B

210J

210-5A (205A)

T210M

210C

210K

T210F

T210N

210D

210L

T210G

T210R

210E

210M

T210H

210F

210N

T210J

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.

\n```\n\n| | 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; orb. Fabricate a placard that incorporates the following words (using at least1/8-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. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| 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. |\n\n| | 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. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Airworthiness Directive becomes effective on 16 January 2009. |\n| 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 210/74 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 AD 2008-10-02 with a P/N 2013142-18 installed and the alternate static air source selector valve port was found obstructed by the P/N identification placard.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.The FAA has been informed that all P/N 2013142-18 alternate static air source selector valves shipped from Cessna Parts Distribution between 1 January 1993, and 31 March 2008, may have port obstruction caused by the P/N identification placard.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![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n8 January 2009","sortOrder":0},{"sectionNumber":"AD/CESSNA 210/75","sectionType":"part","heading":"AD/CESSNA 210/75","content":"## AD/CESSNA 210/75","sortOrder":1},{"sectionNumber":"Alternate Static Air SourceSelector Valv","sectionType":"part","heading":"Alternate Static Air SourceSelector Valve Placard","content":"## Alternate Static Air Source \nSelector Valve Placard","sortOrder":2},{"sectionNumber":"3/2009 TX","sectionType":"part","heading":"3/2009 TX","content":"## 3/2009 TX","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This AD maintains focused scope on the specific safety defect involving the P/N 2013142-18 alternate static air source selector valve. The applicability criteria (manufacture dates, replacement parts, exemption for prior AD compliance) are tightly calibrated to target only aircraft potentially affected by the manufacturing error. The directive does not expand beyond its original safety purpose of preventing instrument errors due to obstructed static ports."},"complexity_factors":["Multiple conditional applicability criteria based on manufacture date, part installation history, and previous compliance with AD/CESSNA 210/74","Different requirements based on aircraft equipment (IFR vs non-IFR capability)","Tiered compliance deadlines ranging from 'before further flight' to 10 days to 100 hours/4 months","Cross-reference to four separate Cessna service bulletins for procedural details","Nested exception structure: unless clauses creating exemptions from applicability","Requirement 2b creates a temporary compliance pathway (placard installation) with subsequent removal requirement in Requirement 3","Reference to foreign regulatory action (FAA AD 2008-26-10) indicating harmonised international regulatory framework"],"plain_english_summary":"This AD orders owners/operators of certain Cessna 210-series aircraft (including specified models delivered 1 Jan 1993–31 Mar 2008 or fitted post‑1993 with valve P/N 2013142‑18) to inspect and, if necessary, remove a misapplied part‑number label that can block the alternate static air source valve and cause false altitude/airspeed indications. IFR‑equipped airplanes face faster action or a temporary IFR ban until inspected. The fix is safety‑critical after 15 reported occurrences."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This AD expands the pool of affected aeroplanes beyond those covered by the earlier AD (AD/CESSNA 210/74) by targeting all aeroplanes delivered between 1 January 1993 and 31 March 2008 and any aeroplane that had a P/N 2013142-18 valve installed after 1 January 1993, unless already modified per the prior AD. The background explains that additional reports of obstructed ports on valves shipped from Cessna Parts Distribution during the 1993–2008 interval prompted the broader inspection requirement. The practical change in scope is from a narrower set of known installations to a wider set that includes spares and later replacement installations, thereby increasing the number of aircraft and parts that must be checked."},"complexity_factors":["Applicability conditions that depend on initial delivery date range (1 Jan 1993 – 31 Mar 2008) and on whether AD/CESSNA 210/74 has been complied with (conditional exemption).","Multiple specific model variants listed in Table 1 (many rows/columns of 210 and T210 models).","Five numbered Requirements with different actions and different target groups (IFR vs non-IFR).","Multiple differing compliance time windows (10 days, before further flight, within 100 hours TIS or 4 months, and 'as of' 10 days).","Cross-references to prior ADs (AD/CESSNA 210/74, FAA AD 2008-26-10 and FAA AD 2008-10-02) creating dependency on other instruments.","References to several Cessna service bulletins (four different SBs) for procedural detail, introducing procedural branching by aircraft type.","Notes about part-number lineage (P/N 2013142-18 replaced earlier P/Ns -9, -13, -17) requiring attention to spares and part history.","IFR-specific temporary placarding rule that must be installed, inspected and then removed — a temporary compliance action with an immediate operational effect."],"plain_english_summary":"**What this instrument does (mechanically)\n\n- Requires inspection of the alternate static air source selector valve (part number P/N 2013142-18 or its predecessors) on specified Cessna 210-series aeroplanes to make sure the small metal part-number identification placard is not blocking the valve port. (See \"Applicability\" and \"Requirements\".)\n\n- For aeroplanes certificated for IFR flight (instrument flight rules), it requires either an immediate inspection or, if that cannot be done within 10 days, the temporary installation of a clear, pilot-visible placard on the instrument panel reading in at least 1/8-inch letters: “IFR OPERATION IS PROHIBITED” and “USE OF THE ALTERNATE STATIC AIR SOURCE IS PROHIBITED.” After the inspection, the temporary placard must be removed before further flight. (See \"Requirements 2a–3\" and \"Compliance\".)\n\n- If an inspection finds the part-number placard is obstructing the alternate static port, the placard must be removed and discarded and the port confirmed open before further flight. Any replacement valve installed after the AD takes effect must be a P/N 2013142-18 that has been inspected and found unobstructed. The AD points maintenance crews to specific Cessna service bulletins for the inspection procedures. (See \"Requirements 4–5\".)\n\nWho this affects\n\n- Owners, operators and maintainers of the Cessna 210-series aeroplanes listed in Table 1 of the AD (multiple 210 and T210 model variants). The AD targets aeroplanes that either: (a) were initially delivered from the manufacturer between 1 January 1993 and 31 March 2008, or (b) had an alternate static selector valve with P/N 2013142-18 installed as a replacement any time after 1 January 1993 — unless the aeroplane already had the modification/rework required by a prior AD (AD/CESSNA 210/74) and remains in compliance with that AD. (See \"Applicability\" and Note 1.)\n\nWhy it matters (safety mechanism and official rationale)\n\n- The AD responds to reports that the part-number identification placard on certain alternate static selector valves was installed in a way that can obstruct the valve port. That obstruction can produce erroneous altimeter, airspeed, and vertical speed instrument readings. The AD’s stated purpose is to remove this potential cause of incorrect instrument indications that could lead to pilot action based on bad information and, in a worst case, loss of control. (See \"Background\".)\n\nImplementation mechanics, timing and immediate consequences\n\n- Non-IFR-equipped aeroplanes: inspect the valve within the next 100 hours time-in-service (TIS) or within 4 months of the AD becoming effective, whichever is sooner. (Requirement 1; Compliance.)\n\n- IFR-equipped aeroplanes: either inspect the valve within 10 days of the AD becoming effective (Requirement 2a) or install the temporary instrument-panel placard and not fly IFR (Requirement 2b — placard must be installed before further flight). After inspection (Requirement 3) the temporary placard must be removed before further flight. (Compliance.)\n\n- If obstruction is found at any inspection required by the AD, the placard must be removed and the port confirmed clear before further flight (Requirement 4). Replacement valves installed after the AD must be inspected and found unobstructed before installation/use (Requirement 5). The AD refers to several Cessna service bulletins for the detailed inspection procedure. (Requirements 4–5.)\n\nWho pays, who decides, and what behaviour changes\n\n- Who pays: aircraft owners/operators pay for inspections, any corrective maintenance, and fabrication/installation of the temporary placard for IFR aircraft where needed. If a valve must be replaced, the owner/operator pays for the part and installation.\n\n- Who decides: the aircraft maintainer/owner must carry out the inspections and corrective actions described in the AD. Civil Aviation Safety Authority (CASA) enforces the AD. The AD prescribes the maintenance standard and points to Cessna service bulletins for procedural detail.\n\n- Behaviour changes required: operators must inspect valves on the listed aeroplanes, remove obstructing placards on valve bodies, avoid using affected alternate static sources for IFR flight until the valve is confirmed unobstructed, and only install inspected P/N 2013142-18 replacement valves after the AD's effective date.\n\nCosts, incentives, trade-offs and risks\n\n- Direct costs are modest: visual inspection of a valve, removal/discard of an obstructing tiny metal placard, fabrication/installation of a small temporary cockpit placard (for some IFR aircraft), and potential replacement of valves if found defective. The AD’s requirement windows (10 days for IFR or before next flight with placard; 100 hours/4 months for others) create urgency that may impose scheduling costs or short-term operational disruption.\n\n- Operational trade-off: for IFR-equipped aeroplanes, the AD creates a temporary restriction (prohibition of IFR use unless inspection done) that may force VFR-only operation or delay flights until inspection — this concentrates cost on operators who fly IFR. That creates a strong incentive to perform quick inspections.\n\n- Implementation risk: the AD applies not only to installed valves but also to valves shipped during a specified period, so inspection of spare parts holdings may be necessary. There is some compliance risk if spares are not traced or inspected; the AD’s cross-reference to multiple Cessna service bulletins centralises the inspection procedure but requires maintainers to follow the correct bulletin for their aircraft.\n\n- Effects on private choice and parts market: owners may choose to avoid installing P/N 2013142-18 valves in the future, substitute a different approved valve, or require proof of inspection from suppliers. The AD restricts installation of replacement valves unless inspected, which affects parts sourcing practices.\n\nConcentrated benefits and diffuse costs\n\n- The safety benefit (reduced risk of bad instrument readings from an obstructed static port) is concentrated on the flight crew and passengers of affected aeroplanes. The compliance cost is relatively diffuse among operators of the many listed model variants, but may be concentrated on operators with heavy IFR usage because of the 10‑day inspection window or the need to install a prohibitory placard until the inspection is complete.\n\nCross-references and procedural detail\n\n- The AD cross-references prior AD/CESSNA 210/74 (an exception condition), FAA ADs (FAA AD 2008-26-10 and FAA AD 2008-10-02), and specific Cessna service bulletins (SB08-34-02 Rev 1; CAB08-04 Rev 1; SEB08-5; MEB08-6) for the inspection procedures. (See \"Applicability\", \"Requirements\" and \"Note 3\".)\n\nNet practical effect\n\n- Operators of the listed Cessna 210-series aeroplanes must inspect the identified selector valves quickly, remove any placard that obstructs the static port, and prevent use of the alternate static source for IFR operations until the valve is verified clear. The AD reduces a specific, documented risk at modest direct cost but imposes short compliance timelines that may interrupt IFR operations if inspections are not scheduled promptly."},"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-210-75-alternate-static-air-source-selector-valve-placard","history":"/api/acts/ad-cessna-210-75-alternate-static-air-source-selector-valve-placard/history","analysis":"/api/acts/ad-cessna-210-75-alternate-static-air-source-selector-valve-placard/analysis","conflicts":"/api/acts/ad-cessna-210-75-alternate-static-air-source-selector-valve-placard/conflicts","importantCases":"/api/acts/ad-cessna-210-75-alternate-static-air-source-selector-valve-placard/important-cases","documents":"/api/acts/ad-cessna-210-75-alternate-static-air-source-selector-valve-placard/documents"}}