AD/F2000/21 - Wing Anti-Ice Telescopic Tubes

The AD rests on a small set of concrete technical and regulatory concepts drawn from the text.

• Applicability by part number. The AD applies only to Falcon 2000 aircraft fitted with wing anti-ice telescopic tubes having P/N 5035-400 or 5035-500 (Applicability). Compliance obligations are therefore triggered by the presence of those exact P/Ns on the aircraft, not by generic references to “wing anti-ice telescopic tubes.”

• Mandatory modification to a design feature. The operational requirement is removal and modification of the affected tubes in accordance with Zodiac SB 5035-30-001 and 5035-30-002 (Requirement). The specified service bulletins supply the technical change; the AD makes compliance mandatory.

• Installation prohibition unless modified. The AD prohibits the installation of an affected telescopic tube P/N 5035-400 or 5035-500 as a replacement part unless it has already been modified per the Zodiac service bulletins (Requirement). That applies to replacement operations in maintenance and parts stocking.

• Life limits and staged compliance. The AD imposes a life limit trigger: 2,400 FH or 2,000 FC TIS since new, whichever occurs first. It provides an accelerated compliance window for tubes that have already exceeded those limits or will do so shortly, requiring modification within 330 FH or seven months after the AD effective date, whichever occurs first (Compliance). This creates two cohorts: tubes below the life limit and tubes at or near/over the limit.

• Cross-reference to another regulator. The AD explicitly references EASA AD 2006-0276 dated 6 September 2006 (Note). That cross-reference signals alignment with, and possibly derivation from, an EASA determination. The AD also references Zodiac service bulletins as the source of modification instructions.

• Safety rationale tied to component failure modes. The Background explains the causal chain: Kynel™ sealing rings in ball joints are subject to temperature-induced cracking and wear, resulting in binding and high swivelling forces. The chain of failure modes includes improper leading edge slat operation, ball joint mounting bracket failure, friction on the aileron control rod, and, if combined with failure of the aileron emergency actuator, potential aileron jamming (Background).

• Temporal implementation markers. The document contains multiple dates: it is signed 12 October 2006, cites an EASA AD dated 6 September 2006, states the AD becomes effective on 23 November 2006, and contains the Compliance notation “From 16 April 2007.” The AD identifier includes “12/2006,” consistent with the quarter or catalogue period.

Each of these concepts is explicitly present in the AD text, and compliance obligations derive directly from them. The AD uses service bulletins produced by the component manufacturer as the mandatory technical instruction set, rather than embedding modification steps into the AD itself.

The AD specifies the class of persons and organisations directly affected by its obligations.

• Aircraft operators and owners of Dassault Falcon 2000 aircraft fitted with telescopic tubes P/N 5035-400 or 5035-500 are the primary obligors. The Applicability section states explicitly that the AD applies to “Falcon 2000 aircraft fitted with wing anti-ice telescopic tubes having Part Number (P/N) 5035-400 or 5035-500.” Any person responsible for continuing airworthiness of those aircraft will therefore need to ensure compliance with the modification and installation prohibition.

• Maintenance organisations and engineers who perform removal, modification and installation work for those components. The Requirement directs removal and modification “in accordance with instructions contained in Zodiac SB 5035-30-001 and 5035-30-002.” Those instructions will be implemented by the maintenance provider or approved personnel responsible for the aircraft’s maintenance.

• Parts suppliers, spares managers and logistics staff who hold inventory of P/N 5035-400 or 5035-500 tubes. The AD explicitly prohibits installing an affected telescopic tube P/N 5035-400 or 5035-500 as a replacement unless it has been modified per the Zodiac service bulletins (Requirement). That prohibition directly affects decisions about whether to stock, sell, or issue those P/Ns as serviceable parts.

• Regulators and delegated decision-makers responsible for issuing and enforcing airworthiness directives. The AD itself is issued by the Civil Aviation Safety Authority (CASA) through its delegate, James Coyne (signature block), and references EASA AD 2006-0276 (Note). Those entries indicate interface with regulator-level decision-making and potentially with other aviation authorities.

• Operators planning maintenance cycles. Because the AD attaches life limits (2,400 FH or 2,000 FC TIS) and conditional timing for compliance (330 FH or seven months for items near/over the limit), operators must schedule the work into upcoming maintenance windows to meet the specified deadlines (Compliance). Aircraft affected but below the life limit have a lead time to arrange modification; aircraft at or near the limit will have a shorter, defined window.

The AD does not identify downstream commercial parties such as passengers, insurers, or lessors by name. It does not specify concessionary arrangements for non-Australian operators. The Note cites an EASA AD, but the AD text does not expand on cross-jurisdictional enforcement or reciprocal recognition.

This AD imposes discrete duties and establishes narrow installation constraints; it does not set out broader rights, remedies or penalty clauses in the text.

Duties

• Identify applicability. Operators must determine whether their Falcon 2000 airframe is fitted with telescopic tubes P/N 5035-400 or 5035-500. The Applicability clause sets the hook for all other duties.

• Remove and modify affected parts. The core duty is to “Remove and modify the affected tubes in accordance with instructions contained in Zodiac SB 5035-30-001 and 5035-30-002” (Requirement). The AD makes compliance with those Zodiac service bulletins mandatory rather than advisory.

• Do not install unmodified parts. A clear installation duty follows: “Do not install an affected telescopic tube P/N 5035-400 or 5035-500 in any aircraft as replacement part, unless it has been modified in accordance with instructions contained in Zodiac SB 5035-30-001 and 5035-30-002” (Requirement). That is a prohibition on installing unmodified spares.

• Meet the timing constraints. The AD provides a life-limit point at which modification must occur: before the tube exceeds 2,400 FH or 2,000 FC since new, whichever occurs first. For tubes already exceeding, or due to exceed within 330 FH or seven months after the AD effective date, modification must occur within 330 FH or seven months, whichever occurs first (Compliance). The Compliance section also contains the statement “From 16 April 2007.” Operators must read these timing instructions together to determine the required action window.

Rights (as evidenced or implied by the text)

• Reliance on manufacturer instructions. The AD explicitly designates Zodiac SB 5035-30-001 and 5035-30-002 as the mandatory method of compliance. That gives operators a right to implement the manufacturer’s prescribed modification steps as the approved compliance pathway.

• Preservation of airworthiness if modified. The AD’s stated purpose is to ensure old-type sealing rings are not operated beyond the specified life limits by requiring modification. Although the AD does not use the word “right,” compliance with the AD using the Zodiac service bulletins is the recognised means to restore or maintain required airworthiness compliance for the referenced failure modes.

What the AD does not do in this text

• The AD does not specify compensatory mechanisms, approval processes for alternative methods of compliance (AMOCs), or exemptions in this printed text. It likewise does not state how to document compliance, although standard airworthiness practice would require documentation; the AD itself does not spell this out.

• The AD contains no text setting out appeals, review or dispute resolution processes against the AD. It also does not state penalties, sanctions, or enforcement processes in this instrument.

Each of these duties flows directly from the AD’s Applicability, Requirement and Compliance paragraphs and from the Zodiac service bulletin references the AD designates as the method of compliance.

The AD text provided contains no express penalty provisions, enforcement procedures or sanctioning language. The instrument is the Airworthiness Directive itself; it sets mandatory technical and timing obligations but does not detail the legal penalties for non-compliance within this document.

What the AD does contain that is relevant to enforcement context

• Issuing authority. The AD is signed by “James Coyne, Delegate of the Civil Aviation Safety Authority” and carries the AD reference AD/F2000/21 with catalogue entry 12/2006. The presence of a CASA delegate’s signature and an AD identifier indicates that the directive is issued under the regulatory framework used by the authority, but the AD text here does not reproduce statutory enforcement provisions or penalty schedules.

• Effective and compliance dates. The AD states it “becomes effective on 23 November 2006” and the Compliance section contains the phrase “From 16 April 2007.” Those dates establish the temporal threshold from which the duty to comply arises; an enforcement action or regulatory compliance assessment would start from those effective dates. The AD itself, however, does not set out how non-compliance detected after those dates will be treated.

Limits on what can be concluded from the AD text alone

• Because the AD does not state penalties or enforcement mechanisms, it is not possible from this document alone to describe fine amounts, licence sanctions, grounding powers, or formal processes that CASA would use to enforce non-compliance. The text likewise does not outline monitoring, reporting, record-keeping, or inspection regimes for verifying compliance.

• The AD does not reference an administrative or judicial appeals process against the AD within the instrument itself.

For obligations and consequences beyond the technical modification duties, users must consult the governing aviation statutes, CASA procedural material, or other regulatory instruments that establish enforcement and penalty frameworks. Those sources are not reproduced in this AD text.

The AD explicitly cross-references at least one other regulator’s instrument and several manufacturer directives, and its operation depends on the interaction between regulator-issued mandatory directives and manufacturer-issued service documents.

Cross-reference to EASA

• The AD contains a Note: “EASA AD 2006-0276 dated 6 September 2006 refers.” That places this CASA AD in the context of an EASA determination on the same technical subject. The AD text thus acknowledges a parallel or antecedent action by EASA. The text does not itself spell out the legal effect of that EASA AD in Australian law; it simply records the reference.

Interaction with manufacturer service bulletins

• The AD makes compliance with Zodiac SB 5035-30-001 and 5035-30-002 mandatory by directing removal and modification “in accordance with instructions contained” in those service bulletins (Requirement). Service bulletins are manufacturer technical documents; the AD’s effect is to convert the steps in those service bulletins into mandatory compliance actions for affected Australian-registered aircraft. The AD does not reproduce the technical steps, it delegates that to the Zodiac service bulletins, thereby creating an interplay between regulator action and manufacturer-specified technical remedies.

Temporal and life-limit interactions

• The AD sets specific life-limits (2,400 FH or 2,000 FC since new) and a short-window rule for items near or beyond those limits (330 FH or seven months). The timing of those limits interacts with maintenance scheduling rules, continuing airworthiness obligations, and record-keeping systems. The AD itself does not restate maintenance record requirements, but by imposing a life-limit and a modified-parts installation prohibition it will intersect in practice with logbook entries, certification of release to service and continuing airworthiness management.

What the AD text does not specify about inter-law relationships

• The AD does not provide express guidance on how compliance with the Zodiac service bulletins should be documented for the purposes of other legal or contractual regimes, such as lease covenants, insurer requirements or foreign authority acceptance. It also does not specify whether complying with the AD satisfies equivalent obligations in other jurisdictions, although the EASA reference suggests correspondence.

• The AD does not include cross-references to Australian aviation statutes, instrument-making powers, or enforcement provisions. Those legal frameworks will govern the AD’s legal force and enforcement, but they are not set out in this AD text.

In short, the AD converts manufacturer instructions into mandatory action for Australian-registered Falcon 2000 aircraft with the listed part numbers, acknowledges an EASA AD on the issue, and embeds life-limits and installation restrictions that will interact operationally with maintenance, parts management and continuing airworthiness record-keeping. The specific legal mechanics of enforcement, cross-jurisdictional recognition and documentation are not contained within this AD text.

The document as provided contains internal dating and reference markers that together form the instrument’s immediate amendment and timeline history. The AD identifier, signatures and dates in the text form the available amendment record.

Key dates and identifiers in the AD text

• EASA AD reference: the AD notes “EASA AD 2006-0276 dated 6 September 2006 refers.” That is the earliest date stated and indicates a prior or parallel regulatory action by EASA on 6 September 2006 (Note).

• Delegate signature date: the AD is signed by James Coyne, Delegate of the Civil Aviation Safety Authority, and carries the date “12 October 2006” adjacent to the signature block. That indicates the instrument was executed by the CASA delegate on that date.

• AD effective date: the AD text states “This Airworthiness Directive becomes effective on 23 November 2006.” That establishes the date from which the AD is formally in force in the issuing jurisdiction.

• Compliance window note: the Compliance section contains the line “From 16 April 2007.” The AD text does not expand on the legal mechanics of that line, but it is an embedded timing element that alters or clarifies when some aspect of compliance takes effect.

• Catalogue identifier: the AD is listed under “AD/F2000/21” and that identifier appears multiple times in the document. The catalogue code “12/2006” is printed alongside the AD heading, consistent with a catalogue period or month-of-issue marker.

Amendments and revisions not present in the text

• The supplied document does not include any explicit amendment history such as superseding AD references, revocations, or later corrective ADs. It does not contain track-changes, revision boxes or references to later ADs as superseding instruments.

• No consolidated or revised versions with alternative compliance methods, extensions or variations are present in the text. The AD as provided appears to be a standalone directive making Zodiac SB compliance mandatory for the parts and life-limits specified.

Operational interpretation of the dates

• The presence of multiple dates,EASA AD on 6 September 2006, CASA delegate signature on 12 October 2006, effective date 23 November 2006 and a compliance notation “From 16 April 2007”,creates a timeline that operators must reconcile to schedule work and to determine when the prohibition on installation and the obligation to modify takes legal effect. The AD text does not include an explicit amendment history beyond these dated entries.

If a reader requires later amendments, revocations, or updated compliance methods, those are not included in the supplied AD text and must be sought in the issuing authority’s consolidated AD list or subsequent releases. The supplied instrument contains the core issuance dates necessary to establish when this particular AD was created and when it became effective.

The supplied AD contains no litigation history, case names, or references to judicial or administrative decisions. The document does not list any proceedings challenging the AD, any determinations by courts or tribunals, or any settled cases concerning this AD.

What the text does show about legal context

• The AD is signed by “James Coyne, Delegate of the Civil Aviation Safety Authority” and dates from October and November 2006. It includes a reference to EASA AD 2006-0276 dated 6 September 2006. Those entries establish the regulatory provenance of the AD but do not indicate litigation.

• The AD contains technical findings and safety rationale (Background) and prescribes mandatory technical steps (Requirement and Compliance). However, it does not contain any footnote, annotation or appendix that refers to legal challenges, judicial reviews, or litigation outcomes.

Implications from the absence of litigation material in the AD text

• Because the AD as provided includes no litigation history, it is not possible from this document alone to report whether any affected party has disputed the AD, sought review, or obtained relief. The AD provides only the directive itself and does not document subsequent legal engagement.

• Any litigation that may have arisen subsequently, or any administrative appeals or submissions related to this AD, are not part of the supplied instrument; they must be located in court records, tribunal databases, regulator public records or party filings, none of which are included here.

In short, the AD does not record any litigation or dispute history within its text. The directive stands as a technical and regulatory instrument; readers seeking litigation or case law relating to this AD will need to consult external judicial or administrative records not reproduced in the AD itself.

The AD contains several concrete details and phrasing that can produce operational pitfalls if read or implemented carelessly. The following points are derived directly from the AD text and flag areas that practitioners should watch for.

1. Applicability is part-number specific. The AD applies only to Falcon 2000 aircraft fitted with telescopic tubes P/N 5035-400 or 5035-500 (Applicability). A tube with a different P/N will not be covered by this AD. Ensure maintenance records and parts lists are checked by part number rather than by generic description.

2. Two-stage timing rule can be confusing. The Compliance section requires modification “before the telescopic tubes P/N 5035-400 and 5035-500 exceed the limit of 2,400 Flight Hours (FH) or 2,000 Flight Cycles (FC) time-in-service (TIS) since new,” while also providing that for tubes already exceeded or that will exceed those limits within the next 330 FH or seven months, modification must occur within 330 FH or seven months after the effective date. Practically, that creates a cohort that needs immediate scheduling. The AD also states “From 16 April 2007.” The AD does not explicitly reconcile the “effective date” (23 November 2006) and the “From 16 April 2007” phrase, so operators must interpret both lines together and confirm which time windows apply to particular tubes.

3. Installation prohibition applies to replacement parts. The AD prohibits installing an affected telescopic tube unless it has been modified per Zodiac SB 5035-30-001 and 5035-30-002 (Requirement). That affects spares inventory and maintenance procurement. A standard operational mistake would be to fit an unmodified spare without checking whether it has been altered.

4. Mandatory use of Zodiac service bulletins. The AD makes Zodiac SB 5035-30-001 and 5035-30-002 the required method of compliance. Operators cannot rely on alternative undocumented procedures unless a formal alternative method of compliance is approved by the authority; the AD text itself does not mention any AMOC process or permit alternatives.

5. Safety rationale is conditional. The Background describes a chain of failures culminating in possible aileron jamming “if combined with a failure of the aileron emergency actuator.” The AD thus addresses both an independent failure mechanism (sealing ring degradation) and its potential compounded outcome. However, the AD’s preventive measure is a mandated modification, not the provision of redundancy or actuator upgrades; practitioners should note the exact failure pathway the AD identifies and the remedy it mandates.

6. Cross-reference to EASA AD. The AD notes EASA AD 2006-0276 dated 6 September 2006. This suggests regulatory alignment but does not itself make EASA decisions directly enforceable in Australia. Do not assume automatic equivalence; the AD imposes the Australian directive as written.

7. No penalties or enforcement steps printed. The AD text contains no penalty regime. If an operator expects to find the sanctioning or appeals process in the AD, it is absent in this document. Compliance consequences therefore rely on broader regulatory frameworks not reproduced here.

8. Part-number permutations and documentation. Because the AD targets two P/Ns, older stock, re-worked parts or parts relabelled in supply chains can be sources of error. Maintenance teams must verify parts by their P/N and by modification status per Zodiac SBs.

9. Timing for parts that have already exceeded limits. The AD requires modification within 330 FH or seven months for tubes that “have already exceeded or will exceed 2,400 FH or 2,000 FC TIS within the next 330 FH or 7 months after the effective date of this AD.” This creates a short compliance window for certain items; failing to prioritise those items may breach the AD’s intended schedule.

10. Textual duplication in the AD. The supplied document includes repeated headings and catalogue entries (AD/F2000/21, Wing Anti-Ice Telescopic Tubes, 12/2006) and an embedded image with no caption. Those duplications may indicate document formatting issues; do not rely on the layout for legal interpretation. Rely on the Applicability, Requirement and Compliance clauses for obligations.

Each of these “gotchas” is grounded in explicit language from the AD. They represent operational, scheduling, parts-management and interpretative risks that the AD itself creates by setting part-numbered obligations, life-limits and mandatory manufacturer instructions.

The AD prescribes a narrow set of steps which, when executed as written, fulfil the directive’s requirements. The following is a compliance checklist derived from the AD text and designed for use by operators and maintenance organisations responsible for Falcon 2000 aircraft with the listed parts.

1. Identify affected aircraft and components.

   • Confirm which Falcon 2000 aircraft are fitted with wing anti-ice telescopic tubes having P/N 5035-400 or 5035-500, using aircraft logbooks, component traceability records and maintenance records (Applicability).

2. Determine life-status of each installed tube.

   • For each affected tube, determine time-in-service since new in flight hours (FH) and flight cycles (FC). The AD’s key thresholds are 2,400 FH or 2,000 FC since new, whichever occurs first (Compliance).

3. Schedule modification based on life-status.

   • If a tube has not yet reached 2,400 FH or 2,000 FC TIS, then modification must occur before it reaches that limit (Compliance).
   • If a tube has already exceeded those limits, or will exceed them within the next 330 FH or seven months after the AD effective date, arrange modification within 330 FH or seven months, whichever occurs first (Compliance). Note that the AD effective date is stated as 23 November 2006; the Compliance section also contains “From 16 April 2007.” Clarify which timing applies to your aircraft by cross-checking actual TIS and the AD’s dates.

4. Obtain Zodiac service bulletins and instructions.

   • Acquire Zodiac SB 5035-30-001 and 5035-30-002, which the AD designates as the mandatory instructions for removal and modification (Requirement). The AD requires modification “in accordance with instructions contained in Zodiac SB 5035-30-001 and 5035-30-002.”

5. Perform removal and modification per service bulletins.

   • Use appropriately authorised personnel or maintenance organisations to remove and modify the affected telescopic tubes following the Zodiac SBs. The AD makes the use of those Zodiac SBs the method of compliance; execute the technical steps exactly as specified in the bulletins.

6. Verify modification status before re-installation.

   • Do not install an affected telescopic tube P/N 5035-400 or 5035-500 as a replacement unless it has been modified in accordance with Zodiac SB 5035-30-001 and SB 5035-30-002 (Requirement). Make sure replacement parts are stamped, tagged or otherwise documented as having undergone the modification.

7. Record-keeping and traceability.

   • Although the AD text does not set out documentation requirements, standard airworthiness practice requires that removal, modification and re-installation are recorded in the aircraft maintenance logbooks and component history cards to demonstrate compliance with the AD’s life limits and modification mandate. Ensure records capture part number, serial number, modification reference (Zodiac SB number), date, FH/FC at modification and certifying personnel.

8. Prioritise tubes that are near or beyond the life-limit.

   • For tubes that have exceeded the life-limits or will do so within 330 FH or seven months after the AD effective date, prioritise scheduling of maintenance to meet the compressed compliance window (Compliance).

9. Coordinate spares management.

   • Review spares inventory for P/N 5035-400 and 5035-500. Do not issue unmodified spares for installation. Tag or segregate any unmodified parts and arrange for their modification per Zodiac SBs before they are released for service (Requirement).

10. Seek clarification where timing is ambiguous.

• The AD uses multiple dates (signed 12 October 2006, effective 23 November 2006, and the Compliance line “From 16 April 2007”). If there is uncertainty as to which items are subject to which specific deadlines, seek clarification from the regulator or from the issuer of the AD. The AD also references EASA AD 2006-0276; reviewing that reference may help with technical interpretation, but the AD itself mandates Zodiac SB compliance.

11. Treat the Zodiac SBs as the compliance method.

• The AD mandates Zodiac SB 5035-30-001 and 5035-30-002 as the method of compliance. Unless an alternative method of compliance is expressly approved by the issuing authority (not described in this AD text), do not substitute other technical procedures.

12. Maintain audit trail for inspection and oversight.

• Keep a complete audit trail of the identification, scheduling, modification, part-status and re-installation steps so that, if inspected by an authority or auditor, the history demonstrates that the AD’s applicability, life-limit and modification requirements have been met.

Following these steps, grounded in the Requirement and Compliance clauses of the AD and the referenced Zodiac service bulletins, will satisfy the directive’s technical obligations for affected Falcon 2000 aircraft. The AD provides the mandatory path for remediation of the sealing-ring issue described in the Background; execute the Zodiac SBs and record the actions to demonstrate compliance.