{"id":"F2008L03400","name":"AD/BEECH 56/35 - Circuit Breaker Toggle Switches","slug":"ad-beech-56-35-circuit-breaker-toggle-switches","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":120392,"registerId":"commonwealth-F2008L03400-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 56TC (Turbo Baron) Series Aer","sectionType":"division","heading":"Beechcraft 56TC (Turbo Baron) Series Aeroplanes","content":"### Beechcraft 56TC (Turbo Baron) Series Aeroplanes\n\n| AD/BEECH 56/35 | Circuit Breaker Toggle Switches | 10/2008 |\n| -------------- | ------------------------------- | ------- |\n\n```html\n

Applicability:

Aeroplane models and serial numbers listed in Table 1 that have any circuit breaker toggle switch with a part number (P/N) 35-380132-1 through 35-380132-53 installed.

Table 1

Model

Serial Number Range

A56TC

TG-84 through TG-94

Requirement:

1. Unless previously accomplished, replace all circuit breaker toggle switches P/N 35-380132-1 through 35-380132-53 with an improved circuit breaker toggle switch, P/N 35-380132-61 through 35-380132-113, as applicable, as specified in Raytheon Aircraft Company (RAC) Recommended Service Bulletin SB 24-3735, Issued: August 2005.

2. Circuit breaker toggle switches P/N 35-380132-1 through 35-380132-53 may not be installed on any aeroplane as an initial fit or as a replacement spare.

Later revisions of the above SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2008-13-17, are considered acceptable for compliance with the equivalent Requirements of this Directive.

Note: FAA AD 2008-13-17 Amdt 39-15580 refers.

Compliance:

For Requirement 1 - Within the next 24 months after the effective date of this Directive.

For Requirement 2 - Before further flight after the circuit breaker toggle switch has been replaced in accordance with Requirement 1.

This Airworthiness Directive becomes effective on 25 September 2008.

Background:

The FAA has received reports of certain circuit breaker toggle switches used in various electrical systems throughout Beech F33, F33A, F33C, G33, V35B, A36, A36TC, B36TC, 95-B55, D55, E55, A56TC, 58, 58P, 58TC, G58 and 77 model aeroplanes overheating. Failure of the circuit breaker toggle switch could result in smoke in the cockpit and the inability to turn off the switch.

\n```\n\n| | This Directive follows the intent of the FAA Directive, requiring the replacement of circuit breaker toggle switches with a P/N 35-380132-1 through 35-380132-53. However, it is revised to allow prior accomplishment, as the RAC service bulletin was issued in 2005 and may have already been accomplished. The Directive also extends compliance by 13 months until 25 September 2010, the final compliance time required by the FAA was 6 August 2009. |\n| --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | A draft version of this Directive was posted for public comment on the Civil Aviation Safety Authority (CASA) internet site on 9 July 2008. As of the date that this Directive was made, no comments or objections have been received by CASA. |\n\n![](image.001.png)\n\nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n8 August 2008","sortOrder":0},{"sectionNumber":"AD/BEECH 56/35","sectionType":"part","heading":"AD/BEECH 56/35","content":"## AD/BEECH 56/35","sortOrder":1},{"sectionNumber":"Circuit Breaker Toggle Switches","sectionType":"part","heading":"Circuit Breaker Toggle Switches","content":"## Circuit Breaker Toggle Switches","sortOrder":2},{"sectionNumber":"10/2008","sectionType":"part","heading":"10/2008","content":"## 10/2008","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope focused specifically on circuit breaker toggle switch replacement in Beechcraft 56TC aircraft. While it references the broader FAA AD that covered multiple Beechcraft models, the Australian directive deliberately limits applicability to only the A56TC model series. The extension of compliance time and allowance for prior accomplishment are procedural accommodations rather than scope expansion."},"complexity_factors":["Single specific aircraft model and narrow serial number range (A56TC, TG-84 through TG-94)","Precise part number ranges for both prohibited and approved switches (35-380132-1 through -53 vs -61 through -113)","Reference to external technical document (Raytheon Service Bulletin SB 24-3735) for compliance procedures","Cross-reference to US FAA Airworthiness Directive 2008-13-17 for alternative compliance methods","Two-tier compliance timeline (24 months for replacement, immediate for installation ban)","Conditional applicability based on existing installation status ('unless previously accomplished')"],"plain_english_summary":"This AD requires owners/operators of Beechcraft A56TC (Turbo Baron) aeroplanes serial TG-84 through TG-94, if fitted with circuit breaker toggle switches P/N 35-380132-1 through -53, to replace them with improved P/Ns 35-380132-61 through -113 within 24 months (by 25 Sep 2010) and prohibits reinstalling the old switches. It addresses overheating/smoke and potential in-flight loss of electrical shutoff, and gives a 13‑month longer compliance window than the corresponding FAA rule."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Compared with the FAA AD intent, CASA revised scope by permitting prior accomplishment of the Raytheon service bulletin and by extending the compliance window by 13 months (final compliance 25 Sep 2010 versus FAA's 6 Aug 2009). Mechanically this relaxes the immediate retrofit timing and recognises already‑completed replacements, while retaining the prohibition on installing the older P/N parts."},"complexity_factors":["Narrow technical scope: specific aircraft model/serial range and discrete part numbers (P/N 35‑380132‑1–53 replaced by 35‑380132‑61–113).","Two operational rules: mandatory replacement within 24 months and a before‑further‑flight prohibition on flying with the old P/N once replacement is done (Requirement 1 and Requirement 2).","Cross‑reference to external documents: Raytheon Service Bulletin SB 24‑3735 and FAA AD 2008‑13‑17 are normative sources; later FAA‑approved SB revisions acceptable as AMOC.","Regulatory timing divergence: CASA extended the final compliance date (to 25 Sep 2010), creating a different deadline than the FAA AD, which affects scheduling and compliance planning.","Compliance burden concentrated on aircraft owners/operators who bear parts and labour costs and must track prior accomplishment status.","Enforcement mechanics are simple (part replacement and verification) but require technical inspection/record checks to confirm part numbers and compliance."],"plain_english_summary":"This directive requires owners/operators of listed Beechcraft A56TC aeroplanes (serials TG‑84–TG‑94) fitted with circuit breaker toggle switches P/N 35‑380132‑1 through ‑53 to replace them with improved switches P/N 35‑380132‑61 through ‑113, and forbids using the older P/Ns as initial fit or replacement. CASA cites FAA reports of overheating that can cause cockpit smoke and jammed switches; replacement is due within 24 months of the directive (effective 25 Sep 2008) with CASA extending final compliance to 25 Sep 2010. Owners/operators pay parts and installation, must verify compliance before further flight, and may follow FAA‑approved service bulletin revisions as an alternate method."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches","history":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches/history","analysis":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches/analysis","conflicts":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches/conflicts","importantCases":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches/important-cases","documents":"/api/acts/ad-beech-56-35-circuit-breaker-toggle-switches/documents"}}