{"id":"F2007L01396","name":"AD/BEECH 33/45 - Landing Gear Up-lock Mechanism","slug":"ad-beech-33-45-landing-gear-up-lock-mechanism","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":65745,"registerId":"commonwealth-F2007L01396-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 33/45 | Landing Gear Up-lock Mechanism | 6/2007 |\n| -------------- | ------------------------------ | ------ |\n\n| Applicability: | Beechcraft (Debonair/Bonanza) aircraft:Models 35-33, 35-A33, 35-B33, 35-C33, E33, F33, and G33 serial numbersCD-1 through CD-1256, inclusive; andModels 35-C33A, E33A, and F33A serial numbers CE-1 through CE-349, inclusive; andModels E33C and F33C serial numbers CJ-1 through CJ-30, 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 33/45","sectionType":"part","heading":"AD/BEECH 33/45","content":"## AD/BEECH 33/45","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_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"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This AD updates and replaces earlier FAA direction (FAA AD 72-22-01) by mandating replacement of non‑greasable rollers, fitting hollow zerk bolts and instituting recurring lubrication intervals for specified Beechcraft 33/35 serial-number ranges. The 2007 directive therefore changes prior corrective actions and imposes recurring maintenance where the earlier AD has been superseded (see Requirement and FAA supersession note)."},"complexity_factors":["Technical specificity of parts and identification (greasible vs solid inner race rollers) (Requirement).","Multiple, staggered compliance deadlines including initial and recurring intervals (Compliance).","Applicability limited to specific models and serial-number ranges, requiring operators to verify applicability (Applicability).","Dependency on external service instructions and FAA AD reference for procedural detail (Requirement: Beechcraft SI No. 0448-211; FAA AD reference).","Operational cost and logistics: parts replacement, installation of hollow zerk bolts, and recurring lubrication impose recurring maintenance burden on owners/operators (Requirement & Compliance).","Safety‑critical hardware change with direct operational consequence (risk of gear‑up landing) (Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Beechcraft 33/35 (Debonair/Bonanza) aeroplanes to inspect the landing-gear up‑lock rollers, replace any solid (non‑greasable) rollers with greasible types, fit hollow zerk‑ended mounting bolts, and begin recurring lubrication per Beechcraft Service Instructions. Initial replacement/inspection actions must occur within about 100 hours time‑in‑service, with lubrication repeated at roughly 100±10 hour intervals.\n\nIt affects owners/operators of the listed models and serial numbers, who must fund parts, labour and the ongoing maintenance to reduce the risk of gear‑up landings from roller seizure."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific mechanical defect in a defined aircraft fleet. It does not expand beyond the landing gear up-lock mechanism issue identified in the background incident."},"complexity_factors":["Single, discrete safety issue with clear mechanical remedy","Limited applicability — specific aircraft models and serial number ranges only","Straightforward 4-step compliance requirement with explicit reference to manufacturer service instructions (SI 0448-211)","Simple compliance timeline: 100 hours time-in-service (TIS) for most items, with repetitive lubrication intervals","No nested exceptions, conditional clauses, or extensive cross-referencing to other legislation","Minor formatting redundancy in source document (repeated headers) but substance is clear"],"plain_english_summary":"This AD mandates owners/operators of specified Beechcraft Debonair and Bonanza (33 and 35-33 series, listed serials) inspect and modify the landing-gear up‑lock mechanism to prevent roller seizure. Affected aircraft must replace non‑greasable rollers with greasable ones, fit hollow bolts with grease (zerk) fittings, and begin recurring lubrication checks. It’s required to prevent gear‑up landings caused by jammed up‑locks."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism","history":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism/history","analysis":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism/analysis","conflicts":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism/conflicts","importantCases":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism/important-cases","documents":"/api/acts/ad-beech-33-45-landing-gear-up-lock-mechanism/documents"}}