{"id":"F2010L01771","name":"AD/B737/300 Amdt 1 - Fuselage Frame Air Conditioning Bracket Attachments","slug":"ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":153167,"registerId":"commonwealth-F2010L01771-current","compilationNumber":null,"startDate":"2026-04-04","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 737 Series Aeroplanes","sectionType":"division","heading":"Boeing 737 Series Aeroplanes","content":"### Boeing 737 Series Aeroplanes\n\n| AD/B737/300 Amdt 1 | Fuselage Frame Air ConditioningBracket Attachments | 13/2010 |\n| ------------------ | -------------------------------------------------- | ------- |\n\n| Applicability: | Model 737-200, -300, -400, and -500 series aircraft; as identified in Boeing Special Attention Service Bulletin 737-53-1216 Revision 1, or later FAA approved revision.                                                                                                                                                                                                                                                                                                                                                    |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2006-26-09 Amdt 39-14867.Corrective actions (repairs) that are on an FAA form 8100-9 and approved by the Manager, Seattle Aircraft Certification Office or an Authorised representative, as defined in paragraph (m)(2) of FAA AD 2006-26-09, as an Alternative Method of Compliance (AMOC) to the requirements of FAA AD 2006-26-09 Amdt 39-14867, may be carried out without the need to obtain an exclusion from CASA from this airworthiness directive. |\n| Compliance:    | The compliance time remains unchanged which was as specified in the Requirement document, with a revised effective date of 15 March 2007.                                                                                                                                                                                                                                                                                                                                                                                  |\n|                | This Amendment becomes effective on 25 June 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |\n| Background:    | The FAA received numerous reports of fuselage frame cracks detected at the attachment holes for support brackets for the air conditioning outlet extrusion. Such cracking, unless detected and corrected, could continue to grow and result in a severed frame. A severed frame, combined with existing multi-site damage at the stringer 10 lap splice, could result in rapid decompression of the aircraft.Amendment 1 allows the use of FAA approved AMOCs without the need to obtain an exclusion from CASA.           |\n\n![](image.001.png)  \n  \nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n22 June 2010","sortOrder":0},{"sectionNumber":"AD/B737/300 Amdt 1","sectionType":"part","heading":"AD/B737/300 Amdt 1","content":"## AD/B737/300 Amdt 1","sortOrder":1},{"sectionNumber":"Fuselage Frame Air ConditioningBracket A","sectionType":"part","heading":"Fuselage Frame Air ConditioningBracket Attachments","content":"## Fuselage Frame Air Conditioning  \nBracket Attachments","sortOrder":2},{"sectionNumber":"13/2010","sectionType":"part","heading":"13/2010","content":"## 13/2010","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of the airworthiness directive. The change is procedural only — removing a bureaucratic step (CASA exclusion requirement) for FAA-approved alternative repairs. The underlying safety requirement (addressing fuselage frame cracks) and affected aircraft models remain unchanged."},"complexity_factors":["Short, single-purpose amendment with narrow scope","Heavy reliance on external documents (FAA AD 2006-26-09, Boeing Service Bulletin) — the actual technical requirements are not reproduced in the text","Only one substantive change from previous version (removing CASA exclusion requirement for AMOCs)","Minimal defined terms (only implicit references to 'AMOC' and 'exclusion')","Simple conditional logic: if repair is on FAA Form 8100-9 and approved by specified FAA official, then no CASA exclusion needed","No nested exceptions or complex cross-referencing within the document itself"],"plain_english_summary":"This mandatory airworthiness directive requires operators of certain older Boeing 737 (-200/-300/-400/-500) to inspect and repair fuselage cracks where air‑conditioning brackets attach to prevent frame failure and possible rapid decompression.  \n\nThe amendment lets operators use FAA‑approved alternative repairs in Australia without needing prior CASA exclusion, simplifying compliance for airlines and maintenance organisations while retaining safety oversight."},"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment does not change the underlying inspection or repair requirements from FAA AD 2006-26-09 or the compliance times, but it changes the administrative approval pathway: FAA-approved Alternative Methods of Compliance (on FAA Form 8100-9 and approved by the Manager, Seattle ACO or authorised FAA representative, as defined in paragraph (m)(2) of FAA AD 2006-26-09) may be carried out in Australia without obtaining a separate CASA exclusion (Requirement)."},"complexity_factors":["Cross-reference to an external FAA AD (FAA AD 2006-26-09) creates dependence on a separate technical document for substantive requirements (Requirement).","Allowance of FAA-approved AMOCs (on FAA Form 8100-9) removes a CASA exclusion step but requires recognition of FAA approval and tracking of authorising documents (Requirement).","Safety-critical structural inspections/repairs with potential severe consequences (severed frame, decompression) increase operational and liability stakes (Background).","Multiple affected aircraft models and identification by a Boeing service bulletin requires operators to consult several documents for applicability (Applicability).","Effective date and unchanged compliance timing require operators to align maintenance scheduling without altering inspection deadlines (Compliance)."],"plain_english_summary":"This amendment requires operators of Boeing 737-200/300/400/500 series listed in Boeing Special Attention SB 737-53-1216 to follow the inspection and repair steps in FAA AD 2006-26-09 to address cracking at air‑conditioning bracket attachment holes. Compliance times remain as originally specified; the amendment is effective 25 June 2010.\n\nMechanically, it lets operators implement FAA‑approved Alternative Methods of Compliance (AMOCs) recorded on FAA Form 8100‑9 and approved by the Seattle ACO or authorised FAA representative without seeking a separate CASA exclusion, changing the approval pathway for repairs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments","history":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments/history","analysis":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments/analysis","conflicts":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments/conflicts","importantCases":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments/important-cases","documents":"/api/acts/ad-b737-300-amdt-1-fuselage-frame-air-conditioning-bracket-attachments/documents"}}