{"id":"F2007L01394","name":"AD/BEECH 36/51 - Landing Gear Up-lock Mechanism","slug":"ad-beech-36-51-landing-gear-up-lock-mechanism","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":65726,"registerId":"commonwealth-F2007L01394-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 36 (Bonanza) Series Aeroplane","sectionType":"division","heading":"Beechcraft 36 (Bonanza) Series Aeroplanes","content":"### Beechcraft 36 (Bonanza) Series Aeroplanes\n\n| AD/BEECH 36/51 | Landing Gear Up-lock Mechanism | 6/2007 |\n| -------------- | ------------------------------ | ------ |\n\n| Applicability: | Beechcraft Bonanza aircraft models 36 and A36, serial numbers E1 through E-283, inclusive.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Using the information contained in Beechcraft Service Instructions (SI) No. 0448-211 at any FAA approved revision status:1. Determine if each up-lock roller is of the greasible type (one having a drilled and grooved inner race).2. Replace any non-greasible up-lock roller (one having a solid inner race) with the greasible type.3. Install hollow zerk-ended mounting bolts on the up-lock rollers.4. Lubricate the up-lock mechanism.Note: FAA 2007-08-08 Amendment 39-15025 dated 06 April 2007 refers. FAA AD 2007-08-08 supersedes FAA AD 72-22-01 Amendment 39-1544. |\n| Compliance:    | 1. Unless already accomplished, within 100 hours time in service (TIS) after the effective date of this AD.2. Before further flight, after the determination required by Requirement 1 of this AD.3. Unless already accomplished, within 100 hours TIS after the effective date of this AD.4. Unless already accomplished, initially within 100 plus/minus 10 hours TIS, and repetitively thereafter, at intervals not to exceed 100 plus/minus 10 hours TIS.                                                                                                                     |\n|                | This Airworthiness Directive becomes effective on 7 June 2007.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n\n| Background: | This AD results from a recent incident involving a Beechcraft Model 95-B55B(T-42A) airplane where a seizure of the uplock rollers occurred. The Requirements of this AD are aimed at decreasing the possibility of gear-up landings caused by seizure of the up-lock rollers. |\n| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n26 April 2007","sortOrder":0},{"sectionNumber":"AD/BEECH 36/51","sectionType":"part","heading":"AD/BEECH 36/51","content":"## AD/BEECH 36/51","sortOrder":1},{"sectionNumber":"Landing Gear Up-lock Mechanism","sectionType":"part","heading":"Landing Gear Up-lock Mechanism","content":"## Landing Gear Up-lock Mechanism","sortOrder":2},{"sectionNumber":"6/2007","sectionType":"part","heading":"6/2007","content":"## 6/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"Scope has not been expanded beyond the expressed target in this instrument: it applies specifically to Beechcraft Bonanza models 36 and A36, serials E1–E283 (Applicability). The AD prescribes inspection, replacement of non-greasable rollers, installation of hollow zerk-ended bolts, and recurring lubrication per Beechcraft SI No.0448-211 (Requirement; Compliance). Costs and implementation fall to aircraft owners/operators (Compliance), who must source parts and schedule initial work within 100 hours TIS and maintain recurring lubrication at 100±10 hour intervals (Compliance). The AD also cross-references FAA AD 2007-08-08 (Requirement/Background) but does not broaden the aircraft or action scope set out here."},"complexity_factors":["Model- and serial-number-limited applicability (Applicability) — narrows affected population but requires checking serial records.","Technical identification requirement (Requirement) — must determine whether each up-lock roller is the greasible type (drilled/grooved inner race) or solid.","Parts replacement and hardware change (Requirement) — replacing rollers and fitting hollow zerk-ended mounting bolts creates procurement and installation tasks.","Reference to external technical document at an approved revision status (Requirement) — mandatory reliance on Beechcraft SI No.0448-211 at any FAA-approved revision increases procedural specificity and dependence on that document.","Multiple and mixed compliance timings (Compliance) — actions range from 'before further flight' to within 100 hours TIS and recurring 100±10 hour intervals, creating urgent and ongoing scheduling needs.","Cross-reference to FAA ADs (Requirement/Background) — cites FAA AD 2007-08-08 and superseded FAA ADs, adding normative external regulatory linkage.","Who bears costs and operational burden (Compliance/Requirement) — owners/operators must fund parts, labour and recurring maintenance (inspection, replacement, lubrication).","Limited administrative discretion (Compliance) — the AD prescribes specific actions and intervals, leaving little room for alternative compliance without further approved action."],"plain_english_summary":"Requires owners/operators of Beechcraft Bonanza models 36 and A36 (serial numbers E1–E283) to inspect the landing gear up‑lock rollers and, where needed, replace solid (non‑greasable) inner‑race rollers with greasable ones, fit hollow zerk‑ended mounting bolts, and lubricate the up‑lock mechanism per Beechcraft Service Instructions No. 0448‑211. Initial work is generally due within 100 hours time-in-service and lubrication is required at recurring 100±10 hour intervals. The stated aim is to reduce gear‑up landings by preventing roller seizure."},"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":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Short, single-purpose directive with only 4 specific mechanical requirements","Limited applicability — only 2 specific aircraft models with defined serial number range","Clear compliance timeline with specific flight hour intervals (100 hours TIS, 100±10 hours)","Single external reference to manufacturer service instructions (Beechcraft SI 0448-211)","No nested exceptions, conditional clauses, or extensive defined terms","Minor complexity from cross-reference to FAA AD 2007-08-08 and its amendment history"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of specified Beechcraft Bonanza 36/A36 (serials E1–E-283) inspect and modify the landing gear up‑lock rollers so they can be greased. Any non‑greasable rollers must be replaced, zerk‑ended hollow bolts fitted, and the mechanism lubricated on a recurring 90–110 flight‑hour interval. Initial inspection/replacement is required within 100 flight hours to prevent roller seizure and possible gear‑up landings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism","history":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism/history","analysis":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism/analysis","conflicts":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism/conflicts","importantCases":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism/important-cases","documents":"/api/acts/ad-beech-36-51-landing-gear-up-lock-mechanism/documents"}}