AD/B747/334 Amdt 1 - Escape Slides, Ramp Slides, and Slides/Rafts of Upper Deck, Off-wing, and Main Doors

The AD is structured around a few central legal and technical concepts that determine scope and compliance:

• Applicability by model plus service bulletin identification. The AD lists 747 models and then ties the detailed identification of affected individual aircraft to Boeing Service Bulletin 747-25-3279 Revision 4 (or later FAA-approved revision) or Boeing Service Bulletin 747-25-3232 original issue (or later FAA-approved revision). That is, the AD uses models as a broad filter and the service bulletin as the granular mapping to individual serials and configurations (source: “Applicability”).

• Reference incorporation. The AD does not reproduce the technical modification steps. Instead it incorporates, by reference, the FAA AD 2009-10-12 Amdt 39-15908 for the “technical requirements.” Compliance therefore requires operators to read and follow the FAA AD and the Boeing service bulletins named (source: “Requirement”).

• Compliance credit for prior work. The AD specifies that actions performed before certain dates in accordance with specified Boeing service bulletin issues and revisions are “acceptable for compliance” with particular paragraphs of the requirement document. The text lists several dates and revisions: Boeing Service Bulletin 747-25-3279 dated 16 May 2002; Revision 1 dated 11 July 2002; Revision 2 dated 26 July 2006; Revision 3 dated 18 January 2007; and notes acceptability of actions taken before 27 October 2005 under the 16 May 2002 issue for paragraph (g), and earlier revisions for paragraphs (g) and (k) as specified (source: “Compliance”).

• Effective dates and amendment status. The amendment becomes effective on 2 July 2009 and is explicitly an amendment (Amdt 1) to a pre-existing AD that came into force 27 October 2005. The amendment “adds an additional aircraft to the applicability” (source: “Compliance”, “Background”, header lines).

• Safety rationale limited to the specific failure mode reported. The stated problem is “30 to 60-second delays in the inflation of escape slides/rafts.” The required modification targets inflation systems of upper deck slides, off-wing escape ramps/slides, and specific door slides/rafts (doors 1, 2, 4 and 5) (source: “Background”).

Operationally these concepts create a legal structure where:

• The operator’s duty to act is delegated to following an external FAA AD and certain Boeing service bulletins.
• Acceptable compliance can include earlier modifications provided they match listed service bulletin revisions and dates.
• The AD’s practical effect is to require parts, labour and maintenance actions necessary to modify inflation systems to the specification of the referenced technical documents.

The document does not itself provide the modification steps, timing windows for retrofit, nor state penalty mechanisms in the provided text. It records a CASA delegate’s signature and effective date, anchoring it as a binding safety instrument for the listed fleet as of 2 July 2009.

The immediate and mandated subjects in the source are operators and owners of the listed Boeing 747 variants where the aircraft are identified under the referenced Boeing service bulletins. The source lists the affected models explicitly: 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, SP and SR series aircraft, as identified in Boeing Service Bulletin 747-25-3279 Revision 4 or Boeing Service Bulletin 747-25-3232 (source: “Applicability”).

Consequence for specific parties:

• Aircraft operators and owners of the listed models must ensure the required actions are completed as prescribed in the FAA AD and service bulletins. The AD’s operative statement is “Action in accordance with the technical requirements of FAA AD 2009-10-12 Amdt 39-15908” (source: “Requirement”).
• Maintenance organisations contracted to perform the modification must follow the FAA AD and the Boeing service bulletin procedures to deliver work acceptable for compliance. The AD accepts earlier work done to particular Boeing service bulletin revisions and dates as satisfying parts of the FAA AD (source: “Compliance”).
• Regulators within CASA are the issuer. The AD is signed by “David Villiers, Delegate of the Civil Aviation Safety Authority” and dated 22 May 2009. That establishes CASA’s role in mandating the action and setting the effective date (source: signature block).

Who is not directly affected by the text of this AD:

• 747 variants not listed are outside the AD’s stated applicability as provided in the source.
• Aircraft of the listed models that are not identified within the Boeing service bulletin lists as applicable would not be captured by the AD as written in the source.

Record and proof obligations are implied by the Compliance section. The AD lists the service bulletin revisions and dates whose prior implementation will be considered acceptable for compliance with specified paragraphs of the requirement document. That creates a need for operators to be able to evidence that prior actions were executed in accordance with those service bulletin revisions and dates. The AD text itself does not elaborate what documentary form that evidence must take.

In short, the economic and operational burden falls on operators and maintenance providers of the listed 747 variants that fall within the service bulletin identifications. The AD adds an aircraft to the original applicability and therefore expands the set of owners/operators with obligations compared to the original AD effective 27 October 2005 (source: “Background”, final paragraph prior to signature).

Duties mandated by the instrument are defined by cross-reference to the FAA AD and the named Boeing service bulletins. The AD itself states the controlling duty as “Action in accordance with the technical requirements of FAA AD 2009-10-12 Amdt 39-15908.” That is the principal legal duty recorded in the source (source: “Requirement”).

Concrete duties and constraints explicitly present in the text:

• Carry out the technical modification work set out in FAA AD 2009-10-12 Amdt 39-15908 for the identified aircraft (source: “Requirement”).
• Ensure any pre-existing modification work relied upon for compliance meets the listed service bulletin versions and dates that the AD accepts as compliant for particular paragraphs of the FAA requirement document. The AD lists which prior service bulletin issues/revisions and dates are acceptable, and ties them to paragraphs (g) and (k) of the requirement document where applicable (source: “Compliance”).

Rights or mitigations evidenced in the text:

• Compliance credit: The AD grants “acceptable for compliance” status to specified earlier actions. That is a formal mitigation allowing operators who already completed earlier work in line with the listed Boeing service bulletin issues to rely on that work instead of repeating the modification (source: “Compliance”).
• Flexibility in referenced revisions: The AD permits use of Boeing Service Bulletin 747-25-3279 Revision 4 or “later FAA approved revision,” and similarly for Boeing Service Bulletin 747-25-3232 “original issue, or later FAA approved revision.” That allows operators to use an updated FAA-approved bulletin as issued after the AD, subject to FAA approval (source: “Applicability”).

What the AD text does not specify as a separate duty or right:

• The AD does not set out an explicit compliance deadline within the provided text. It does set a revised effective date for the AD of 2 July 2009 and states that compliance is “as specified in the Requirement document,” meaning the FAA AD contains the schedule (source: “Compliance”, “Requirement”).
• The AD does not enumerate inspection intervals, post-modification tests, or continuing airworthiness obligations in the text provided. Those are deferred to the FAA AD and the Boeing service bulletins.

Mechanisms by which duties are to be satisfied:

• Follow FAA AD 2009-10-12 Amdt 39-15908 for the technical modification and any scheduling and testing details in that document (source: “Requirement”).
• Use the Boeing service bulletin(s) identified in the Applicability and the Compliance paragraphs to identify which individual aircraft and configurations require action and to determine whether prior work can be credited (source: “Applicability”, “Compliance”).

In sum, the AD imposes the duty to implement the FAA-specified technical correction to the inflation systems covered, while granting credit for prior conforming work and permitting later FAA-approved revisions of the service bulletins. The specific substantive obligations and timing are determined by the incorporated FAA AD and the detailed Boeing service bulletins rather than by text reproduced in the AD amendment itself.

The text of the AD as provided does not set out explicit penalties, sanction schedules, or enforcement procedures. The instrument records the legal issuance and effective date, and incorporates the FAA AD as the technical requirement, but contains no penalty clause in the reproduced content. The signatory block identifies “David Villiers, Delegate of the Civil Aviation Safety Authority” and an issue date of 22 May 2009, and records that “This Amendment becomes effective on 2 July 2009” (source: signature and Compliance rows).

What the document does state about compliance and enforcement relevant mechanics:

• Compliance is required “as specified in the Requirement document,” and the Requirement document is the FAA AD 2009-10-12 Amdt 39-15908. Therefore, adherence to the FAA AD’s compliance timelines and procedures will determine whether an operator is complying with CASA’s AD as issued (source: “Requirement”, “Compliance”).
• The AD specifies acceptability of certain prior actions executed according to defined Boeing service bulletin revisions and dates. That creates an evidentiary requirement: operators relying on prior work must be able to show that the earlier actions were done in accordance with the listed service bulletin(s) and revisions in order to meet this AD’s compliance credit (source: “Compliance”).

What is not in the source and must not be assumed:

• The AD does not describe how CASA will monitor compliance, what documentary format will be accepted to show compliance with the credited service bulletin revisions, nor what administrative or criminal penalties may apply for non-compliance. The AD text provided is silent on enforcement modalities and penalties.
• The AD does not reproduce the FAA’s enforcement regime, if any, nor does it state the precise legal instruments by which CASA would escalate a non-compliance. Any statement about fines, grounding, or certificate actions would be outside the content of the source.

Practical enforcement implications that follow from the text:

• Operators must treat the incorporated FAA AD and referenced Boeing service bulletins as mandatory for the aircraft to which this AD applies. The effective date of the amendment (2 July 2009) is when this requirement came into force for the expanded applicability (source: “Compliance”).
• Acceptance of certain prior service work is time- and revision-specific, so operators using those compliance credits must retain and present maintenance records showing the work was performed to the exact service bulletin issue or revision and within the dates stated, to demonstrate that those actions meet the AD’s “acceptable for compliance” statements (source: “Compliance”).

Given the AD’s silence on penalty language in the provided text, anyone acting under or advising on this AD should consult CASA’s broader enforcement and civil aviation regulatory framework, and the full text of the incorporated FAA AD, to determine precise enforcement consequences and administrative process. Those elements are not contained in the AD text supplied here.

The AD explicitly links its technical mandate to materials produced outside the CASA instrument, creating cross-reference dependencies rather than standalone technical rules. The primary cross-reference is to FAA AD 2009-10-12 Amdt 39-15908; the AD directs that required actions be performed “in accordance with the technical requirements of FAA AD 2009-10-12 Amdt 39-15908” (source: “Requirement”).

Interactions recorded in the source:

• Interstate regulatory reliance. By incorporating an FAA AD by reference, the CASA AD makes compliance contingent on following a foreign authority’s airworthiness directive. That creates an operational interface where CASA’s domestic legal requirement is implemented through an externally authored technical document (source: “Requirement”).
• Manufacturer service bulletins as identifying instrument. The AD uses Boeing Service Bulletin 747-25-3279 (Revision 4 or later FAA-approved revision) and Boeing Service Bulletin 747-25-3232 (original issue or later FAA-approved revision) to determine applicability and to identify aircraft and configurations. That creates a technical linkage between the regulator’s mandatory requirement and the manufacturer’s recommended procedures and serial-number-level identification (source: “Applicability”).

Dependence on approvals and revisions:

• The AD conditions use of later service bulletin revisions on FAA approval. Where the text says “Revision 4, or later FAA approved revision,” the AD requires either the specified revision or a later revision that has received FAA approval. The AD does not itself approve revisions; it prescribes FAA-approved later revisions as acceptable (source: “Applicability”).

Credit for prior compliance and paragraph linkages:

• The AD expressly states which prior service bulletin issues/revisions and dates are “acceptable for compliance” with particular paragraphs (g) and (k) of the Requirement document. Those cross-references mean CASA’s compliance assessment will rely on the FAA AD’s paragraph structure and on Boeing service bulletin history (source: “Compliance”).

What the AD text does not do:

• It does not state how it modifies or interacts with any specific Australian statutory provisions on airworthiness, certificates of airworthiness, or operator obligations. The AD is an instrument that requires action; it does not, in the provided text, recite the enabling statutory provisions. To understand legal effect in the broader Australian regulatory system, one would need to consult the CASA Act or the Civil Aviation Regulations, which are not included in the AD text provided.

Practical effects of these interactions:

• Operators must consult three separate documents at minimum to determine obligations: this CASA AD amendment, the FAA AD 2009-10-12 Amdt 39-15908 for technical and scheduling requirements, and the Boeing service bulletins named for aircraft identification and for assessing prior actions (source: “Applicability”, “Requirement”, “Compliance”).
• Because the AD accepts “later FAA approved revision” versions of Boeing service bulletins, operators must be attentive to subsequent FAA approvals of Boeing revisions. That introduces an administrative intersection: operators must track FAA approvals to determine which service bulletin versions are acceptable under this CASA AD (source: “Applicability”).

In short, the AD operates by integration with the FAA AD and Boeing service bulletins. It thereby creates a legal and technical dependency web among the CASA AD, the FAA AD, and manufacturer service documents. The AD itself contains no standalone technical steps or domestic statutory text in the extract provided; these interactions are central to operational compliance.

The document presented is identified as AD/B747/334 Amdt 1, i.e., an amendment to a previously issued AD. The AD explicitly records the original issue’s effective date and the effective date of the amendment. From the source:

• Original AD effective date. The AD states “The original issue of the Airworthiness Directive became effective 27 October 2005” (source: bottom left of the “Background” table and adjacent text).
• This amendment effective date. The AD states “This Amendment becomes effective on 2 July 2009” (source: “Compliance”).
• Issue and signature. The document is signed “David Villiers, Delegate of the Civil Aviation Safety Authority” and dated 22 May 2009. That date is the signing date for the amendment and precedes the amendment effective date (source: signature block).

What the amendment changes, per the AD text:

• The AD’s “Background” paragraph states that the amendment “adds an additional aircraft to the applicability.” That is the explicit substantive change documented in the instrument: a change in the set of aircraft to which the AD applies, expanding from the original set (source: “Background”).

Acceptability of prior work across time:

• The Compliance section records that actions completed before the original effective date may be acceptable for compliance with specified paragraphs of the FAA AD. Specifically, the AD lists service bulletin issues and revisions and dates that it will accept as fulfilling the corresponding requirements of paragraphs (g) and (k) of the Requirement document, subject to the precise revision or issue cited (source: “Compliance”).

Service bulletin revision chronology as recorded:

• Boeing Service Bulletin 747-25-3279 dated 16 May 2002 is referenced as an original issue whose actions done before 27 October 2005 are acceptable for paragraph (g) compliance (source: “Compliance”).
• Revisions referenced: Revision 1 dated 11 July 2002; Revision 2 dated 26 July 2006; Revision 3 dated 18 January 2007; and Revision 4 is the revision named for current applicability, or “later FAA approved revision” (source: “Applicability”, “Compliance”).

Administrative markers:

• The AD is titled repeatedly in the document header with the amendment reference and the subject “Escape Slides, Ramp Slides, and Slides/Rafts of Upper Deck, Off-wing, and Main Doors,” with a date reference “7/2009.” The document’s layout in the source repeats the title and amendment number across the heading rows as part of the formal record (source: top rows).

In summary, the amendment history within the text shows an original AD effective 27 October 2005 and an amendment that broadens applicability, signed 22 May 2009, and effective 2 July 2009. The amendment also formalises acceptance of prior work done to particular Boeing service bulletin issues and revisions as satisfying parts of the FAA AD’s paragraphs, thereby accommodating operators who had already undertaken qualifying modifications.

The source contains no record of litigation, court decisions, challenges, proceedings, or judicial review related to AD/B747/334 or its amendment. The document is an administrative safety instrument and records only the regulatory amendment, the technical cross-references, compliance credit positions, effective date, and signature by the CASA delegate (source: entire text).

What the source does indicate that is relevant to litigation risk and evidentiary issues, without asserting that litigation occurred:

• The AD’s acceptance of prior work performed to specific service bulletin revisions and dates creates potential future disputes about whether given maintenance actions exactly matched the service bulletin instructions. The AD ties acceptability to specific service bulletin issue dates and revisions and to paragraphs (g) and (k) of the FAA AD. That structure means contested compliance determinations, if they arose, would hinge on documentary proof that work was performed “in accordance with” the specified service bulletins and on the proper interpretation of the paragraphs referenced (source: “Compliance”).
• The AD incorporates the FAA AD for technical requirements. Any dispute over the meaning or application of technical steps would likely require consulting the FAA AD and the related Boeing service bulletins as part of the record. The AD itself does not provide the text of the incorporated FAA AD paragraphs and service bulletin steps; those would be central exhibits in any judicial or administrative review, but no such cases are recorded in the AD source (source: “Requirement”, “Applicability”).

Because the AD text provided does not reference any litigation or legal determinations, the only reliable statement supported by the source is that the document itself does not record any litigation history. Anyone seeking to establish whether disputes or litigation later occurred must look beyond the AD text to court records, administrative decisions, or enforcement notices, which are not part of the source document.

The AD contains several technical and administrative particulars that create pitfalls for operators and advisers. These are not speculative; each follows from explicit wording in the text.

1. Cross-reference dependence. The AD requires action “in accordance with the technical requirements of FAA AD 2009-10-12 Amdt 39-15908” rather than setting out the modifications itself (source: “Requirement”). Gotcha: to determine actual steps, testing and scheduling, you must consult the FAA AD. Failing to read the FAA AD and the referenced Boeing service bulletins is not excusable.

2. Applicability defined by service bulletin identification. The AD lists models but then points to Boeing Service Bulletin 747-25-3279 Revision 4 or later FAA-approved revision, or Boeing Service Bulletin 747-25-3232 original issue or later FAA-approved revision, “as applicable” (source: “Applicability”). Gotcha: an airframe model alone does not conclusively establish whether a particular serial/configuration is captured; you must check the Boeing SB lists to confirm whether the specific aircraft serial number and configuration is identified.

3. Acceptable prior actions are revision- and date-specific. The Compliance text sets out which earlier Boeing service bulletin issues/revisions and dates are “acceptable for compliance” with particular paragraphs of the FAA AD (source: “Compliance”). Gotcha: an operator whose maintenance was performed to a service bulletin that differs even slightly in revision or issue date may find that CASA does not accept that previous work as satisfying the AD. Documentation must expressly match the revisions and dates listed.

4. Paragraph-specific credits. The AD ties acceptance of prior actions to specific paragraphs (g) and (k) of the requirement document (source: “Compliance”). Gotcha: the AD does not explain what paragraphs (g) and (k) require. Consequently, an operator must examine the FAA AD to map paragraphs to technical steps. Reliance on a vague recollection of what was done may be insufficient.

5. “Later FAA approved revision” dependency. The AD allows Boeing service bulletin Revision 4 “or later FAA approved revision.” Gotcha: the permissibility of a later revision depends on FAA approval status. Operators must verify whether a later Boeing revision has obtained FAA approval to ensure it is acceptable under the AD.

6. No penalty language in the provided text. The AD does not specify penalties or enforcement steps in the text provided (source: full AD text). Gotcha: absence of explicit penalties in the AD does not mean non-compliance will be without consequence. Enforcement and penalty frameworks will be established elsewhere in the civil aviation regulatory regime; do not assume leniency.

7. Multiple documents to coordinate. The AD requires consulting at least three documents: the CASA AD amendment, the FAA AD, and the named Boeing service bulletins. Gotcha: records, schedules and technical steps must be reconciled across those documents. Inconsistency between maintenance records and the exact requirements of the FAA AD or the service bulletin revision cited could result in non-acceptance of prior work.

8. Effective date and timing for newly added aircraft. The amendment adds “an additional aircraft to the applicability” and became effective 2 July 2009 (source: “Background”, “Compliance”). Gotcha: if an aircraft was brought into that applicability after the original AD but before the amendment effective date, the operator must check which AD version applies and whether prior work qualifies under the credit provisions.

9. Evidence and audit trail demands. Because the AD indicates that certain prior work is “acceptable for compliance,” operators must maintain maintenance records showing work was done “in accordance with” the named service bulletin revision or issue and on the dates specified. Gotcha: incomplete records may mean the operator cannot claim the compliance credit and will have to undertake the modification anew.

10. Narrowly-worded acceptability references. The AD’s acceptability provisions distinguish between different service bulletin revisions for different paragraphs of the FAA AD (source: “Compliance”). Gotcha: failure to map prior actions to the precise paragraph that they are intended to satisfy could lead to non-acceptance; do not assume blanket acceptability across the FAA AD.

Each of these “gotchas” follows from particular phrases and cross-references in the AD text. The implications are practical and procedural: verify exactly which aircraft are captured, which technical steps must be followed, whether prior work matches the revision/date thresholds cited, and whether later Boeing revisions are FAA approved.

The AD directs compliance through a three-step documentary and technical process implied by the text. Below are the steps an operator or maintenance provider should take, strictly as required by the instrument’s wording.

1. Identify whether the individual aircraft is captured by the AD.

   • Check the aircraft’s model against the list in the Applicability row: Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, SP and SR series aircraft (source: “Applicability”).
   • Consult Boeing Service Bulletin 747-25-3279 Revision 4, or later FAA approved revision, and Boeing Service Bulletin 747-25-3232 original issue, or later FAA approved revision, to determine whether the specific airframe serial number and configuration appear in the service bulletin applicability lists (source: “Applicability”).

2. Read and follow FAA AD 2009-10-12 Amdt 39-15908.

   • The AD requires “Action in accordance with the technical requirements of FAA AD 2009-10-12 Amdt 39-15908.” That is the controlling technical and scheduling document (source: “Requirement”).
   • Determine the technical modification steps, parts, testing and any compliance timeframes contained in the FAA AD. The CASA AD does not reproduce those steps; it requires adherence to them.

3. Determine whether prior work is acceptable and assemble records.

   • If the aircraft has already undergone relevant work, check the Compliance paragraph to see if that work is listed as “acceptable for compliance” for specific paragraphs of the FAA AD. The AD lists the following as acceptable under specified conditions:
     • Actions accomplished before 27 October 2005 in accordance with Boeing Service Bulletin 747-25-3279 dated 16 May 2002 are acceptable for the corresponding requirements of paragraph (g) of the requirement document.
     • Actions accomplished before the AD effective date and in accordance with Boeing Service Bulletin 747-25-3279 Revision 2 dated 26 July 2006; or Revision 3 dated 18 January 2007 are considered acceptable for compliance with paragraph (g).
     • Actions accomplished before the AD effective date according to Boeing Service Bulletin 747-25-3279 dated 16 May 2002; Revision 1 dated 11 July 2002; Revision 2 dated 26 July 2006; or Revision 3 dated 18 January 2007 are considered acceptable for compliance with paragraph (k) (source: “Compliance”).
   • Retain documentary evidence (work orders, logbook entries, parts serials, technician signatures) showing the date of the work, the exact bulletin issue/revision to which the work was performed, and that the work conformed to the service bulletin procedures. The AD conditions acceptability on that precise mapping.

4. If work has not been completed or prior work does not qualify, arrange to perform the modification as per FAA AD.

   • Use the Boeing service bulletin referred to for identification and the FAA AD for the technical steps. Engage a certificated maintenance organisation capable of performing the inflation-system modification for the upper deck escape slides, off-wing escape ramps/slides, and doors 1, 2, 4, and 5 slides/rafts as required by the FAA AD (source: “Background”, “Requirement”).

5. Verify later revisions and approvals where applicable.

   • The AD permits Boeing Service Bulletin 747-25-3279 Revision 4 “or later FAA approved revision.” If using a later revision, confirm that the revision has FAA approval; the AD requires FAA-approved later revisions (source: “Applicability”).

6. Note AD effective date and timing.

   • The amendment becomes effective on 2 July 2009. Ensure actions are scheduled and performed in accordance with the timing and compliance windows set out in the FAA AD that the CASA AD incorporates (source: “Compliance”).

7. Prepare to present compliance evidence to CASA if requested.

   • Because the AD accepts certain prior actions only under explicitly enumerated revision/date combinations, maintain clear records to demonstrate compliance or credit for prior work. The AD’s acceptability statements create a documentary evidentiary standard for CASA compliance assessment (source: “Compliance”).

8. Where uncertain, consult the full texts.

   • Obtain the full FAA AD 2009-10-12 Amdt 39-15908 and the Boeing service bulletins referenced in the AD. Do not rely solely on the CASA AD summary lines. The CASA AD expressly makes the FAA AD the source of the technical requirements (source: “Requirement”).

This procedural map follows directly from the AD’s wording. The CASA AD defers technical specifics and compliance schedules to the FAA AD and the Boeing service bulletins, and it sets out which prior work it will accept for compliance credit. Compliance therefore requires documentary care, confirmation of FAA approvals for later revisions, and application of the precise revision and date mapping contained in the AD’s Compliance paragraph.