{"id":"F2006B04035","name":"AD/BEECH 55/89 Amdt 1 - Right Hand Fuselage Rivets","slug":"ad-beech-55-89-amdt-1-right-hand-fuselage-rivets","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43644,"registerId":"commonwealth-F2006B04035-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/89 Amdt 1 - Right Hand Fuselage Rivets","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BEECH 55/89 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)\n\nBeechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes\n\nAD/BEECH 55/89\n\nAmdt 1\n\n  \nRight Hand Fuselage Rivets 3/2003\n\n| Applicability: | ModelGroup 1 aircraft: | Serial Number                                    |\n| -------------- | ---------------------- | ------------------------------------------------ |\n|                | 58                     | TH-1 through TH-1811 and TH-1813 through TH-1897 |\n|                | Group 2 aircraft:      |                                                  |\n|                | 58A                    | TH-1 through TH-1811 and TH-1813 through TH-1897 |\n\nRequirement: Group 1 and Group 2 aircraft:\n\nInspect for missing rivets between fuselage station (F.S.) 83.00 and F.S. 91.00 at water line (W.L.) 90.3.\n\nInspect in accordance with the ACCOMPLISHMENT INSTRUCTIONS paragraph of Raytheon Mandatory Service Bulletin SB 53-3341 Revision 1, Revised May 2000, or SB 3341 Revision 2, Revised October 2002, and the Baron Model 58 Series Maintenance Manual.\n\nIf rivets are found to be missing, before further flight, install these rivets.\n\nNote: FAA AD 2003-01-01 Amdt 39-13012 refers.\n\nCompliance: For Group 1 aircraft: Within 100 hours’ time-in-service after 22 March 2001\\. For Group 2 aircraft: Within 100 hours’ time in service after 20 March 2003.\n\nThe compliance time remains unchanged for aircraft affected by the original issue of this Directive.\n\nThis Amendment becomes effective on 20 March 2003.\n\nBeechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes\n\nAD/BEECH 55/89 Amdt 1 (Continued)\n\nBackground: The manufacturer has identified several instances of missing rivets on affected aircraft. These rivets must be present for the fuselage to carry the ultimate load and prevent critical structural failure, with loss of aircraft control.\n\nAmendment 1 is issued in response to a new FAA AD which corrects applicability.\n\nThe original issue of this Airworthiness Directive became effective on 22 March 2001.\n\n![](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 7 February 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original 2001 directive only applied to Model 58 aircraft (Group 1). Amendment 1 expands the scope to include Model 58A aircraft (Group 2) with the same serial number ranges, effectively doubling the number of affected aircraft. This expansion was triggered by a new FAA directive that corrected the applicability."},"complexity_factors":["Multiple defined aircraft groups (Group 1 and Group 2) with different compliance dates","Specific technical references to fuselage stations (F.S.) and water lines (W.L.) requiring engineering knowledge to locate","Cross-references to external technical documents (Raytheon Service Bulletin SB 53-3341 Revisions 1 and 2, Baron Maintenance Manual, and FAA AD 2003-01-01)","Conditional logic: different compliance deadlines based on aircraft group and whether affected by original directive","Precise serial number ranges (TH-1 through TH-1811 and TH-1813 through TH-1897) with a specific gap (TH-1812 excluded)"],"plain_english_summary":"This AD requires owners/operators of certain Beechcraft Baron 58 and newly included 58A airplanes to inspect the right‑hand fuselage for missing rivets and replace any found before further flight. \n\nMissing rivets in that area can lead to structural failure and loss of control; the amendment expands the original 2001 directive to add Model 58A aircraft per the FAA."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 corrects the applicability (which serial numbers/groups are covered) in response to a new FAA AD but does not change the substantive safety action required: inspect the rivets between F.S. 83.00 and F.S. 91.00 at W.L. 90.3 and install any missing rivets before further flight. The amendment adjusts which aircraft must comply but does not expand the AD’s technical requirement or introduce new types of action beyond inspection and repair."},"complexity_factors":["Short standalone AD (single main requirement)","Two groups with different compliance start dates (Group 1 and Group 2)","Specific serial‑number ranges listed in the applicability section","References to external technical documents (Raytheon SB 53‑3341 Rev 1 or Rev 2 and the Baron Model 58 Series Maintenance Manual)","Cross‑reference to FAA AD 2003‑01‑01","Requirement to act “before further flight” if defects found (binary operational constraint)","Amendment revokes and replaces original AD (historical cross‑reference)"],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- It revokes the earlier Airworthiness Directive (AD/BEECH 55/89) and reissues it with an amendment (Amdt 1). The operative requirement is an inspection of the right‑hand fuselage rivets on specified Beechcraft Baron series aeroplanes and immediate repair if rivets are missing.\n\n- The inspection must cover the fuselage between fuselage station (F.S.) 83.00 and F.S. 91.00 at waterline (W.L.) 90.3 and must be carried out in accordance with the Raytheon Mandatory Service Bulletin SB 53‑3341 (Revision 1 or Revision 2) and the Baron Model 58 Series Maintenance Manual (Requirement section).\n\n- If missing rivets are found, the AD mandates that those rivets be installed before the aircraft is flown again (Requirement section).\n\n**Which aircraft are affected**\n\n- Specified serial-number ranges of Beechcraft Model 58 and 58A (Baron) series aircraft. The AD lists the exact serial number blocks that make up Group 1 and Group 2 applicability (Applicability section).\n\n**Timing / compliance**\n\n- Group 1 aircraft: inspect within 100 hours’ time‑in‑service measured from 22 March 2001.\n- Group 2 aircraft: inspect within 100 hours’ time‑in‑service measured from 20 March 2003.\n- For aircraft already covered by the original issue of the AD, the compliance time remains the same as previously set (Compliance section).\n\n**Why the AD was issued (stated reason)**\n\n- The manufacturer identified instances of missing rivets in the specified area. The AD states these rivets are required for the fuselage to carry ultimate load and to prevent critical structural failure that could cause loss of aircraft control (Background section). The amendment was issued to correct the applicability in response to a new FAA AD (Background section).\n\n**Who pays and who decides**\n\n- Aircraft owners/operators pay for the inspection and, if necessary, rivet replacement (inspection labour, parts, and any associated maintenance downtime). This is the immediate, direct cost.\n\n- The Civil Aviation Safety Authority (CASA), through its delegate, issues and enforces the AD (preamble and signature block). The AD prescribes the mandatory actions and the timing.\n\n**What behaviour changes are required**\n\n- Operators of affected Beechcraft 58/58A must schedule and carry out the specified inspection within the stated compliance window, and must install any missing rivets before the next flight.\n\n**Implementation, compliance and risk trade-offs**\n\n- The AD references external technical documents (Raytheon Service Bulletin and the Manufacturer’s Maintenance Manual) to define how the inspection is to be done; operators must follow those procedures exactly to be compliant (Requirement section). That creates a reliance on accurate, accessible service documentation.\n\n- The direct compliance cost per aircraft is the labour time for the inspection and any rivet replacement plus any aircraft downtime. These are concentrated costs on owners/operators of the affected models but are dispersed across the owner population.\n\n- The AD requires repair before further flight if rivets are missing, which places a binary operational constraint: affected aircraft found non‑compliant cannot lawfully fly until rectified (Requirement section).\n\n- The amendment corrects applicability; it does not introduce a new technical requirement beyond the inspection and repair instructed in the earlier AD (Background section). The corrective change may require additional operators to act who were not covered by the original wording.\n\n**Reference to other instruments**\n\n- The AD explicitly refers to Raytheon Mandatory Service Bulletin SB 53‑3341 (Rev 1 and Rev 2), the Baron Model 58 Series Maintenance Manual, and the FAA AD 2003‑01‑01 (Note and Requirement sections). Compliance therefore depends on following those external documents as well as this AD.\n\n**Short practical summary for an operator**\n\n- If you operate a Beechcraft 58/58A in the serial ranges listed, you must inspect the right‑hand fuselage rivets between F.S. 83.00 and F.S. 91.00 at W.L. 90.3 within the stated 100‑hour windows, and you cannot fly the aircraft again until any missing rivets are installed in accordance with the manufacturer’s service bulletin and maintenance manual."},"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-55-89-amdt-1-right-hand-fuselage-rivets","history":"/api/acts/ad-beech-55-89-amdt-1-right-hand-fuselage-rivets/history","analysis":"/api/acts/ad-beech-55-89-amdt-1-right-hand-fuselage-rivets/analysis","conflicts":"/api/acts/ad-beech-55-89-amdt-1-right-hand-fuselage-rivets/conflicts","importantCases":"/api/acts/ad-beech-55-89-amdt-1-right-hand-fuselage-rivets/important-cases","documents":"/api/acts/ad-beech-55-89-amdt-1-right-hand-fuselage-rivets/documents"}}