{"id":"F2005L01345","name":"AD/B717/9 Amdt 1 - Wing Rear Spar","slug":"ad-b717-9-amdt-1-wing-rear-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":35128,"registerId":"commonwealth-F2005L01345-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 717 Series Aeroplanes","sectionType":"division","heading":"Boeing 717 Series Aeroplanes","content":"### Boeing 717 Series Aeroplanes\n\n| AD/B717/9 Amdt 1 | Wing Rear Spar | 7/2005 |\n| ---------------- | -------------- | ------ |\n\n| Applicability: | Model 717-200 aircraft, with manufacturer’s fuselage numbers 5002 through 5058 inclusive.                                                                                                                                                                                                                                                                                                                                             |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Modify the attachment holes in the rear spar of the left and right wings in accordance with Boeing Service Bulletin 717-57-0001, Revision 01 or later revision that has been approved by the FAA as an alternative method of compliance (AMOC).Note: FAA AD 2003-10-10 Amdt 39-13155 refers.                                                                                                                                          |\n| Compliance:    | Before the accumulation of 30,000 total flight cycles or within 10 years after 7 August 2003, whichever occurs first.                                                                                                                                                                                                                                                                                                                 |\n|                | This Amendment becomes effective on 7 July 2005.                                                                                                                                                                                                                                                                                                                                                                                      |\n| Background:    | The FAA requires certain modifications to prevent fatigue cracking of the wing rear spar. Such cracking could result in reduced structural integrity.This amendment is issued to allow the use of later revisions of the service bulletin, provided they are approved by the FAA as an alternative method of compliance (AMOC). There is no change to the compliance.The original issue of this AD became effective on 7 August 2003. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n25 May 2005","sortOrder":0},{"sectionNumber":"AD/B717/9 Amdt 1","sectionType":"part","heading":"AD/B717/9 Amdt 1","content":"## AD/B717/9 Amdt 1","sortOrder":1},{"sectionNumber":"Wing Rear Spar","sectionType":"part","heading":"Wing Rear Spar","content":"## Wing Rear Spar","sortOrder":2},{"sectionNumber":"7/2005","sectionType":"part","heading":"7/2005","content":"## 7/2005","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment did not broaden or materially change the substantive scope of the original AD. It preserves the same applicability (same fuselage numbers), the same required action (modify rear spar attachment holes) and the same compliance deadlines. The only substantive change is procedural: it permits the use of later revisions of Boeing Service Bulletin 717-57-0001 provided the FAA has approved those revisions as an AMOC. That is a narrow administrative change to allow updated technical guidance; it does not expand the set of affected aircraft, extend compliance time, or alter the required modification itself."},"complexity_factors":["Short, single-subject AD focused on one structural modification (rear spar attachment holes).","One defined applicability range (fuselage numbers 5002–5058).","Single compliance condition with two alternative triggers (30,000 total flight cycles OR within 10 years after 7 August 2003, whichever first).","One procedural reference: Boeing Service Bulletin 717-57-0001 (Revision 01), plus allowance for later revisions only if FAA approves as AMOC.","Cross-reference to FAA AD 2003-10-10 but no additional nested exceptions or multiple compliance options.","Amendment only relaxes the document-version constraint (permits later SB revisions subject to FAA approval) without adding conditional layers."],"plain_english_summary":"This AD mandates a physical modification to the rear wing spar attachment holes on certain Boeing 717‑200s (fuselage numbers 5002–5058) to prevent fatigue cracking, to be completed by 30,000 total flight cycles or within 10 years of 7 Aug 2003. Operators bear the cost and must track cycles.\n\nThe Amendment does not change the required work or deadlines; it only permits using later revisions of Boeing Service Bulletin 717‑57‑0001 if the FAA has approved them as an AMOC."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope precisely. The change is purely administrative — permitting use of later approved revisions of the technical instructions without altering the safety objective, affected aircraft, or compliance timeframe."},"complexity_factors":["Single, specific technical requirement (modify attachment holes per specified service bulletin)","Only one defined term of note (AMOC — Alternative Method of Compliance)","Clear, single compliance deadline with simple 'whichever occurs first' logic","Narrow applicability (specific aircraft model and fuselage number range)","No nested exceptions or conditional sub-clauses","Cross-reference to only one external document (FAA AD 2003-10-10) for context","Total length: approximately 200 words of substantive content"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific Boeing 717-200 aircraft to modify the attachment holes in the rear spar (a critical structural beam) of both wings. This involves drilling or reworking specific holes to prevent metal fatigue.\n\n**Who must follow it:** Anyone operating Boeing 717-200 aircraft with fuselage numbers 5002 through 5058 — that's a specific batch of 57 planes.\n\n**The deadline:** Operators must complete this modification before the aircraft reaches 30,000 total flight cycles, or within 10 years of 7 August 2003, whichever comes first.\n\n**Why it matters:** Fatigue cracking in the wing rear spar could weaken the aircraft's structure, potentially compromising flight safety. The FAA (American regulator) identified this risk first, and Australia is adopting the same fix.\n\n**What's new in this version:** This amendment (Amdt 1) allows operators to use updated versions of Boeing's technical instructions (Service Bulletin 717-57-0001), provided the FAA has approved them as an \"alternative method of compliance\" (AMOC — basically, a permitted variation on how to meet the safety standard). The safety requirement and deadline remain unchanged."},"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-b717-9-amdt-1-wing-rear-spar","history":"/api/acts/ad-b717-9-amdt-1-wing-rear-spar/history","analysis":"/api/acts/ad-b717-9-amdt-1-wing-rear-spar/analysis","conflicts":"/api/acts/ad-b717-9-amdt-1-wing-rear-spar/conflicts","importantCases":"/api/acts/ad-b717-9-amdt-1-wing-rear-spar/important-cases","documents":"/api/acts/ad-b717-9-amdt-1-wing-rear-spar/documents"}}