{"id":"F2008L03401","name":"AD/BEECH 55/97 - Circuit Breaker Toggle Switches","slug":"ad-beech-55-97-circuit-breaker-toggle-switches","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":120395,"registerId":"commonwealth-F2008L03401-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 55, 58 and 95-55 (Baron) Seri","sectionType":"division","heading":"Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes","content":"### Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes\n\n| AD/BEECH 55/97 | 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

95-B55
D55
E55
58
58P
58TC
G58

TC-1913, TC-1936 through TC-2456
TE-452 through TE-767
TE-768 through TE-1201
TH-1 through TH-2124
TJ-3 through TJ-497
TK-1 through TK-151
TH-2126, TH-2127, TH-2131 through TH-2134, TH-2136, TH-2137, TH-2139 through TH-2141, and TH-2143 through TH-2150

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 Hawker Beechcraft Recommended Service Bulletin SB 24-3807, Issued: May 2007 and 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 SBs, 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.

\n```\n\n| | For Requirement 2 - Before further flight after the circuit breaker toggle switch has been replaced in accordance with Requirement 1. |\n| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Airworthiness Directive becomes effective on 25 September 2008. |\n| 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| | 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| | 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 55/97","sectionType":"part","heading":"AD/BEECH 55/97","content":"## AD/BEECH 55/97","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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This Directive retains the FAA’s replacement mandate for the same affected parts and aircraft but alters timing and procedural scope: it permits prior accomplishment and extends the compliance deadline by 13 months (Background). Otherwise the technical scope (affected P/Ns and replacement P/Ns) remains unchanged (Applicability; Requirement 1)."},"complexity_factors":["Narrow applicability by model and serial number ranges (Applicability).","Part‑number specific replacement requirement: old P/N 35‑380132‑1–53 replaced by 35‑380132‑61–113 (Requirement 1).","Absolute prohibition on installing old P/Ns as initial fit or replacement spare (Requirement 2).","Mandatory compliance with manufacturer service bulletins SB 24‑3807 and SB 24‑3735, and acceptance of FAA‑approved later revisions as AMOC (Requirements & Note).","Two compliance timings: 24 months for replacement, and 'before further flight' for any aircraft where the switch has been replaced (Compliance; Requirement 2).","Cross‑reference to FAA AD 2008‑13‑17 and reliance on FAA AMOC process (Note / Background).","Allowance for prior accomplishment and an extended compliance deadline relative to FAA timing (Background)."],"plain_english_summary":"Requires owners/operators of listed Beechcraft 55/58/95‑55 series aeroplanes to replace specific circuit breaker toggle switches (P/N 35‑380132‑1 to ‑53) with improved parts (P/N 35‑380132‑61 to ‑113). CASA sets a 24‑month compliance window; operators pay for parts and labour. The AD also forbids reinstalling the old P/N switches and accepts later FAA‑approved service bulletin revisions as alternate compliance. The measure responds to reports of overheating that could cause cockpit smoke and inability to turn off the switch (Background)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a focused, single-purpose scope: addressing a specific defective part on specific aircraft models. The background indicates it follows the FAA's lead but extends the compliance timeframe by 13 months and allows for prior accomplishment. These are minor administrative adjustments to implementation timing, not an expansion of substantive scope beyond the original safety purpose."},"complexity_factors":["Specific part number ranges (35-380132-1 through 35-380132-53) requiring careful cross-checking against aircraft maintenance records","Multiple aircraft models and extensive serial number ranges listed in Table 1 (7 models with non-contiguous serial number ranges)","Reference to external technical documents (Hawker Beechcraft SB 24-3807 and Raytheon SB 24-3735) for compliance procedures","Conditional compliance: Requirement 1 has 24-month window; Requirement 2 is immediate ('before further flight')","Recognition of prior accomplishment and FAA Alternate Method of Compliance (AMOC) provisions creating alternative compliance paths","Cross-reference to corresponding FAA AD 2008-13-17 for context"],"plain_english_summary":"This AD requires owners/operators and maintenance organisations of specific Beechcraft Baron twin‑engine aeroplanes (listed by serial number) to replace a batch of overheating circuit breaker toggle switches with improved parts within 24 months and prohibits re‑installation of the old switches. It addresses a fire and jam‑in‑the‑on‑position hazard that could prevent shutting off power in an emergency. Previously completed replacements under the manufacturer’s service bulletins are accepted as compliance."},"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-beech-55-97-circuit-breaker-toggle-switches","history":"/api/acts/ad-beech-55-97-circuit-breaker-toggle-switches/history","analysis":"/api/acts/ad-beech-55-97-circuit-breaker-toggle-switches/analysis","conflicts":"/api/acts/ad-beech-55-97-circuit-breaker-toggle-switches/conflicts","importantCases":"/api/acts/ad-beech-55-97-circuit-breaker-toggle-switches/important-cases","documents":"/api/acts/ad-beech-55-97-circuit-breaker-toggle-switches/documents"}}