{"id":"F2008L00824","name":"AD/BEECH 33/46 - Grimes Strobe Lights","slug":"ad-beech-33-46-grimes-strobe-lights","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72920,"registerId":"commonwealth-F2008L00824-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 33 and 35-33 (Debonair/Bonanz","sectionType":"division","heading":"Beechcraft 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes","content":"### Beechcraft 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes\n\n| AD/BEECH 33/46 | Grimes Strobe Lights | 4/2008 |\n| -------------- | -------------------- | ------ |\n\n| Applicability: | F33A model aeroplanes, serial numbers CE-436 through CE-537 inclusive, equipped with either Grimes part number (P/N) 30-0467-1 or P/N 30-0467-3 strobe light assemblies.                                                                                                                                                                                                                             |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Unless previously accomplished, deactivate the strobe light system in accordance with Beech Service Instruction (SI) 0655-362, Rev. I, or later approved revisions and add a temporary placard near the strobe light switch stating \"STROBE LIGHT SYSTEM DEACTIVATED\".                                                                                                                            |\n|                | Note 1: This requirement is only applicable until the strobe light system is modified per Requirement 2.                                                                                                                                                                                                                                                                                             |\n|                | 2. Unless previously accomplished, modify the strobe light system in accordance with SI 0655-362, Rev. I, or later approved revisions.                                                                                                                                                                                                                                                               |\n|                | If an aeroplane has been modified by the aircraft manufacturer in accordance with Requirement 2 above and the aircraft manufacturer has made an entry in the aircraft permanent maintenance record that the modification was \"in accordance with either AD 74-20-11 or 74-24-03, as amended\", or words to that effect, such modification is considered acceptable for compliance with Requirement 2. |\n|                | Note 2: FAA AD 74-24-03 Amdt 39-2016 refers.                                                                                                                                                                                                                                                                                                                                                         |\n| Compliance:    | For Requirement 1 - Within the next 25 hours time in service after the effective date of this Directive.                                                                                                                                                                                                                                                                                             |\n|                | For Requirement 2 - Prior to 10 October 2008.                                                                                                                                                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 10 April 2008.                                                                                                                                                                                                                                                                                                                                     |\n| Background:    | This Directive follows an internal review of Australian Airworthiness Directives which indicated an AD was not issued for Beech Model F33A aeroplanes. When FAA AD 74-24-03 was received there were no Beech Model F33A aeroplanes on the Australian register.                                                                                                                                       |\n\n|     | This Directive requires the strobe light system to be deactivated until it is modified, theses measures are necessary to eliminate a possible ignition source in an area where fuel/fuel vapour may exist. |\n| --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n13 February 2008","sortOrder":0},{"sectionNumber":"AD/BEECH 33/46","sectionType":"part","heading":"AD/BEECH 33/46","content":"## AD/BEECH 33/46","sortOrder":1},{"sectionNumber":"Grimes Strobe Lights","sectionType":"part","heading":"Grimes Strobe Lights","content":"## Grimes Strobe Lights","sortOrder":2},{"sectionNumber":"4/2008","sectionType":"part","heading":"4/2008","content":"## 4/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive targets the same limited set of aircraft and assemblies identified in the source FAA AD and imposes deactivation then modification per Beech Service Instruction. It does not expand applicability beyond the stated model/serial numbers, but accepts equivalent prior manufacturer modifications if documented."},"complexity_factors":["Narrow, specific applicability limited to a single model and serial number range (CE-436–CE-537).","Two-step compliance: short-term deactivation and placarding (Requirement 1) followed by a mandatory modification (Requirement 2).","Fixed, short compliance windows (25 hours time-in-service for deactivation; calendar deadline of 10 Oct 2008 for modification).","Reliance on an external technical document: Beech Service Instruction 0655-362, Rev. I (or later approved revisions) for the work required.","Accepts prior manufacturer modifications only if recorded in the permanent maintenance record with specified wording (affects evidentiary burden).","Cross-reference to FAA AD 74-24-03 creates dependency on foreign AD history and revisions.","Administrative actions required (temporary placard, maintenance-record entry) add low-level compliance tasks and verification points."],"plain_english_summary":"This Airworthiness Directive applies to Beechcraft F33A aeroplanes (serials CE-436 to CE-537) fitted with Grimes strobe lights (P/N 30-0467-1 or 30-0467-3). It requires operators to deactivate the strobe system immediately (add a temporary placard) and to complete a mandated modification per Beech Service Instruction 0655-362 by 10 October 2008. Aircraft owners/operators must carry out and record the work and bear the cost. The directive’s stated purpose is removing a possible ignition source where fuel or vapour may be present."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific safety defect in specific aircraft models. It does not expand beyond the original ignition source hazard identified."},"complexity_factors":["Very short document (approximately 300 words)","Only 2 substantive requirements with clear deadlines","Single applicability criterion (specific model + serial number range + part numbers)","One cross-reference to FAA AD 74-24-03 and manufacturer service instruction SI 0655-362","Simple conditional logic (unless previously accomplished)","No defined terms section — all terms are ordinary technical aviation language"],"plain_english_summary":"This AD mandates owners/operators of Beechcraft F33A (serial CE-436–CE-537) fitted with certain Grimes strobe systems to immediately disable the strobes (within 25 flight hours) and apply a temporary warning label, then complete a required permanent modification by 10 Oct 2008 per Beech Service Instruction 0655-362. It responds to a fire/explosion hazard: the strobes may act as an ignition source in fuel/fuel‑vapour areas. Exemption if already modified and documented."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-46-grimes-strobe-lights","history":"/api/acts/ad-beech-33-46-grimes-strobe-lights/history","analysis":"/api/acts/ad-beech-33-46-grimes-strobe-lights/analysis","conflicts":"/api/acts/ad-beech-33-46-grimes-strobe-lights/conflicts","importantCases":"/api/acts/ad-beech-33-46-grimes-strobe-lights/important-cases","documents":"/api/acts/ad-beech-33-46-grimes-strobe-lights/documents"}}