{"id":"F2005L03169","name":"AD/B737/161 Amdt 2 - Main Wheel Well Electrical Connectors","slug":"ad-b737-161-amdt-2-main-wheel-well-electrical-connectors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":134411,"registerId":"commonwealth-F2005L03169-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 737 Series Aeroplanes","sectionType":"division","heading":"Boeing 737 Series Aeroplanes","content":"### Boeing 737 Series Aeroplanes\n\n| AD/B737/161 Amdt 2 | Main Wheel Well Electrical Connectors | 12/2005 |\n| ------------------ | ------------------------------------- | ------- |\n\n| Applicability: | All Model 737-300, -400 and -500 series aeroplanes. |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Perform a detailed visual inspection of electrical connectors D5162P, D5162J, D5164P and D5164J (connectors are linked to the fuel shut-off valves and outboard landing lights), located in the main wheel wells, to detect discrepancies (missing spare contacts and filler rods, improper plugs or filler rods, contamination or corrosion), as specified in Boeing Service Letter (SL)737-SL-24-138 dated 24 May 1999. |\n| | Note 1: For the purposes of this Directive, a detailed visual inspection is defined as:”An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.” |\n| | 2. Repair any discrepancies found during the Requirement 1 inspection in accordance with SL 737-SL-24-138. |\n| | 3. Modify the electrical connectors located in the main wheel well in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-28-1196, Revision 3, dated 1 April 2004. |\n| | Modifications accomplished before the effective date of this Amendment in accordance with Boeing Special Attention SB 737-28- 1196, dated 5 December 2002; Revision 1, dated 13 March 2003; or Revision 2, dated 21 August 2003 are considered acceptable for compliance with this Requirement. |\n| | Note 2: Accomplishment of Requirement 3 is terminating action for the Requirement 1 repetitive inspections |\n| | 4. Carry out any necessary corrective action identified during the Requirement 3 modification in accordance with the service bulletin. |\n| | Note 3: FAA AD 2001-14-06 Amdt 39-12316 and AD 2005-10-11 Amdt 39-14088 refer. |\n\n| Compliance: | For Requirement 1 - Within 12 months after the effective date of the original issue of this Directive and thereafter at intervals not to exceed 24 months until Requirement 3 is accomplished. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| | For Requirement 2 - Before further flight after the Requirement 1 inspection. |\n| | For Requirement 3: |\n| | a. Aeroplanes on which the Requirement 1 inspection has not been accomplished - Within 12 months after the effective date of Amendment 1. |\n| | b. Aeroplanes on which the Requirement 1 inspection has been accomplished - Either within 18 months after accomplishing the last inspection or within 6 months after the effective date of Amendment 1, whichever occurs later. |\n| | For Requirement 4 - Before further flight after the Requirement 3 modification. |\n| | This Amendment becomes effective on 24 November 2005. |\n| Background: | The United States Federal Aviation Administration has been advised by Boeing of reports indicating engine shutdown during flight due to uncommanded movement of the engine shutoff valve. |\n| | The original issue of this Directive required repetitive inspections of certain connectors located in the main wheel wells to detect discrepancies and, if necessary, corrective action. These actions were necessary to detect and correct discrepancies in electrical connectors located in the main wheel wells which could result in electrical arcing of the connectors, uncommanded closure of the engine fuel shut-off valves and consequent in-flight loss of thrust or engine shutdown from lack of fuel. |\n| | Amendment 1 provided terminating action to the repetitive inspections by way of a modification. |\n| | This Amendment corrected a typographic error in the title of the Directive, compliance remains unchanged. |\n| | Amendment 1 of this Airworthiness Directive became effective on 4 August 2005. |\n| | The original issue of this Airworthiness Directive became effective on 6 September 2001. |\n\n![](image.001.png) \nJayaprakashan Ambali \nDelegate of the Civil Aviation Safety Authority \n13 October 2005","sortOrder":0},{"sectionNumber":"AD/B737/161 Amdt 2","sectionType":"part","heading":"AD/B737/161 Amdt 2","content":"## AD/B737/161 Amdt 2","sortOrder":1},{"sectionNumber":"Main Wheel Well Electrical Connectors","sectionType":"part","heading":"Main Wheel Well Electrical Connectors","content":"## Main Wheel Well Electrical Connectors","sortOrder":2},{"sectionNumber":"12/2005","sectionType":"part","heading":"12/2005","content":"## 12/2005","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":5,"scope_assessment":{"changed":false,"description":"Amendment 2 did not change the directive's substantive scope or obligations. The instrument still applies to all Boeing 737‑300/‑400/‑500 series aeroplanes and retains the inspection, repair and terminating modification requirements and the original compliance timelines (see 'Applicability', 'Requirement 1–4' and 'Compliance'). The Background expressly states: 'This Amendment corrected a typographic error in the title of the Directive, compliance remains unchanged.'"},"complexity_factors":["Multiple action types: repetitive detailed visual inspections, on‑the‑spot repairs before further flight, and a terminating modification (Requirements 1–4; Note 2).","Technical inspection standard explicitly defined (Note 1) — requires lighting, aids, possible surface cleaning and access work, increasing labour and time per inspection.","Reference to external Boeing documents and specific revisions (Boeing Service Letter SL737‑SL‑24‑138; Boeing Special Attention SB 737‑28‑1196 Revision 3) creates dependency on service‑document availability and revision history (Requirement 1; Requirement 3).","Conditional and overlapping compliance windows: different deadlines depending on whether prior inspections were done and relative timing to Amendment 1 (Compliance: a & b), complicating scheduling for fleets.","Acceptable prior compliance paths: earlier SB revisions are explicitly accepted as compliant for Requirement 3, requiring record checks (Requirement 3).","Safety consequence linkage: Background cites risk of in‑flight engine shutdown from connector arcing, making corrective action time‑sensitive and operationally critical.","Cross-reference to FAA ADs for related context and corrective framework (Note 3), requiring operators to reconcile multiple regulatory documents."],"plain_english_summary":"Requires operators of Boeing 737-300/-400/-500 series aeroplanes to carry out detailed inspections, repairs and a mandated modification of specific main wheel-well electrical connectors to prevent arcing that could cause unintended closure of engine fuel shut‑off valves and in‑flight engine shutdown. Amendment 2 only corrects a typographical error in the directive title; the inspection, repair, modification requirements and compliance timelines remain unchanged."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This Amendment 2 explicitly states it only corrects a typographic error in the title. The substantive safety requirements (inspections, repairs, modifications) and compliance timeframes remain unchanged from Amendment 1. The scope has not expanded beyond the original purpose of addressing unsafe electrical connectors in main wheel wells."},"complexity_factors":["Multiple compliance pathways depending on prior inspection history (Requirements 3a vs 3b)","Cross-references to external Boeing technical documents (Service Letter 737-SL-24-138 and Service Bulletin 737-28-1196 Revision 3) that are not reproduced in the directive","Nested conditional logic: Requirement 3 has two sub-pathways based on whether Requirement 1 has been accomplished","Terminating action concept (Note 2) creates interdependency between requirements","Reference to prior amendments and their effective dates for context","Specific connector part numbers and document revision dates that must be tracked precisely"],"plain_english_summary":"This AD requires operators of Boeing 737‑300/‑400/‑500 aircraft to inspect and modify electrical connectors in the main wheel wells that control fuel shut‑off valves and outboard landing lights. The goal is to stop electrical arcing that could falsely close fuel shut‑off valves and cause an in‑flight engine shutdown.\n\nIt affects Australian operators of those 737s: recurring inspections are required until the mandated modification is completed, repairs must be done before flight, and Amendment 2 only corrects a title typo."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors","history":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors/history","analysis":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors/analysis","conflicts":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors/conflicts","importantCases":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors/important-cases","documents":"/api/acts/ad-b737-161-amdt-2-main-wheel-well-electrical-connectors/documents"}}