{"id":"F2007L00091","name":"AD/S-PUMA/64 Amdt 1 - CPI 503 Emergency Locator Transmitter","slug":"ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":68146,"registerId":"commonwealth-F2007L00091-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter AS 332 (Super Puma) Series He","sectionType":"division","heading":"Eurocopter AS 332 (Super Puma) Series Helicopters","content":"### Eurocopter AS 332 (Super Puma) Series Helicopters\n\n| AD/S-PUMA/64 Amdt 1 | CPI 503 Emergency Locator Transmitter | 2/2007 |\n| ------------------- | ------------------------------------- | ------ |\n\n| Applicability: | AS 332 L2 helicopters equipped with an optional type CPI 503 (Crash Position Indicator) emergency locator transmitter, fitted with an immersion sensor (water activated switch) part number (P/N) 50323. |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Check that the battery is installed in the interface unit and electrically inhibit the immersion detection function in compliance with the instructions specified in paragraph 2 of Eurocopter AS332 Alert Telex 25.01.71. |\n| | 2. Insert a copy of this Directive in the Aircraft Flight Manual (AFM) in order to inform crews that the immersion detection function is ineffective in the event of forced ditching. The emergency locator transmitter beacon can still be released manually via the control unit and automatically in the event of a crash. |\n| | Note 1: Although the immersion detection function is electrically inhibited, the emergency locator transmitter beacon can be set to transmit manually via its control unit. |\n| | 3. Remove from service any immersion sensors (water-activated switches)P/N 50323, installed on aircraft or held as spares. |\n| | 4. Replace immersion sensor (water-activated switch) P/N 50323 with an immersion sensor (water-activated switch) P/N 503232 and return the immersion detection function to an operative condition, in compliance with the instructions specified in paragraph 2 of the Eurocopter AS332 Alert Service Bulletin 25.01.71 dated 8 June 2006 or later EASA approved revision. |\n| | 5. Remove the copy of the AD/S-PUMA/64 from the Aircraft Flight Manual (AFM). The copy of the Directive is no longer necessary once the immersion detection function is restored, as automatic deployment is once again ensured in the event of forced ditching. |\n| | Note 2: EASA AD 2006-0300 dated 5 October 2006 refers. |\n| Compliance: | For Requirement 1 - Remains unchanged as ‘Within 50 flying hours after the effective date of the original issue of this Directive but no later than 6 March 2006. |\n\n| | For Requirement 2 - Concurrent with the Requirement 1 deactivation of the immersion detection function. |\n| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | For Requirements 3, 4 and 5 - Within three months after the effective date of this Amendment. |\n| | This Amendment becomes effective on 15 February 2007. |\n| Background: | The original issue of this Directive was issued following advice from the Direction Générale de l’Aviation Civile (DGAC) of France that some cases of untimely deployment of the emergency locator transmitter beacon on AS 332 L2 helicopters had been reported. At that time further rulemaking by the DGAC to correct the unsafe condition was expected.The analysis carried out by the manufacturer has revealed an anomaly on the immersion sensor, which can give rise to untimely deployment of the emergency locator transmitter beacon. Furthermore, some interface units may have been installed without a battery. In addition to the loss of the emergency locator transmitter function, the dropping of the emergency locator transmitter beacon could be a danger to persons on the ground. |\n| | The original issue of this Directive required the immersion sensor to be inhibited and a copy of the Directive to be inserted into the AFM. This Amendment requires the replacement of the immersion sensor, the return to service of the sensor circuit and removal of the copy of the Directive from the AFM. |\n| | The original issue of this Directive became effective on 6 February 2006. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n13 December 2006","sortOrder":0},{"sectionNumber":"AD/S-PUMA/64 Amdt 1","sectionType":"part","heading":"AD/S-PUMA/64 Amdt 1","content":"## AD/S-PUMA/64 Amdt 1","sortOrder":1},{"sectionNumber":"CPI 503 Emergency Locator Transmitter","sectionType":"part","heading":"CPI 503 Emergency Locator Transmitter","content":"## CPI 503 Emergency Locator Transmitter","sortOrder":2},{"sectionNumber":"2/2007","sectionType":"part","heading":"2/2007","content":"## 2/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Yes. The original Directive required only temporary inhibition of the immersion sensor and insertion of the Directive into the AFM (original issue, Background). This Amendment expands the scope by mandating removal of immersion sensors P/N 50323 from service, replacement with P/N 503232, restoration of immersion-detection functionality, and removal of the AFM insert once fixed (Requirement 3–5; Background). Practically, operators and maintenance organisations bear the cost and labour of replacement and record changes; CASA (via its delegate) enforces the timeline (Compliance; Background)."},"complexity_factors":["Technical specificity: actions hinge on precise part numbers (P/N 50323 to be removed; P/N 503232 to be installed) (Applicability; Requirement 3–4).","Staged compliance with short deadlines: interim inhibition and AFM insertion first, then sensor removal/replacement and AFM removal within specified timeframes (Requirement 1–5; Compliance).","Operational/safety trade-off: temporary electrical inhibition of immersion detection reduces automatic ditching activation risk but relies on manual ELT release or crash-triggered release during the interim (Requirement 1; Note 1; Background).","Administrative burden: inserting and later removing a copy of the Directive from the AFM requires operator action and crew notification (Requirement 2–5).","Supply and maintenance burden: replacing installed or spare immersion sensors requires parts availability, maintenance labour and record updates (Requirement 3–4; Compliance: three months).","Cross-regulatory references and approvals: compliance depends on following Eurocopter Alert Telex and Service Bulletin instructions and EASA AD cross-reference (Requirement 1; Requirement 4; Note 2).","Potential for variation in implementation: some interface units may have been installed without a battery, introducing diagnostic steps and discretionary maintenance decisions (Background).","Timing and verification complexity: multiple effective dates and an Amendment effective date (original issue effective 6 February 2006; this Amendment effective 15 February 2007) require tracking by operators and regulators (Background; Compliance)."],"plain_english_summary":"This Directive changes how AS 332 L2 helicopters fitted with CPI 503 emergency locator transmitters handle water-activation. It requires operators to electrically inhibit the immersion-detection circuit, notify crews via the Aircraft Flight Manual, remove and replace faulty immersion sensors P/N 50323 with P/N 503232, and then restore automatic immersion detection. The measure targets owners, operators and maintenance organisations because it prevents untimely ELT deployment while ensuring a technical fix is installed."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Amendment (Amdt 1) does not expand the scope beyond the original directive's purpose. The original AD addressed unsafe conditions with the CPI 503 ELT immersion sensor. This amendment simply completes the remediation by requiring replacement of the faulty part and restoration of the safety function, rather than leaving it permanently disabled. The scope remains tightly focused on the specific helicopter model and specific part number identified in the original issue."},"complexity_factors":["Single, specific aircraft type and part number scope (AS 332 L2 with CPI 503 ELT, P/N 50323)","Five sequential requirements with clear dependencies (must complete 1 & 2 before 3, 4, 5)","Two distinct compliance timeframes (immediate/50 hours vs. 3 months)","Cross-reference to Eurocopter technical documents (Alert Telex 25.01.71 and Service Bulletin 25.01.71)","Reference to corresponding European regulator document (EASA AD 2006-0300)","Simple conditional logic: different actions required depending on whether the immersion sensor has been replaced yet"],"plain_english_summary":"This CASA Airworthiness Directive targets Eurocopter AS332 L2 Super Puma helicopters fitted with CPI 503 ELTs using the P/N 50323 water‑activation (immersion) sensor. The sensor can deploy the beacon erroneously — and some were fitted without batteries — risking false drops and non‑function in real water emergencies.\n\nOperators must disable and inspect the water‑activation and batteries, carry a temporary flight‑manual warning, remove the faulty sensors within three months, and replace them with the updated P/N 503232 to restore safe automatic activation."},"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-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter","history":"/api/acts/ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter/history","analysis":"/api/acts/ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter/analysis","conflicts":"/api/acts/ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter/conflicts","importantCases":"/api/acts/ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter/important-cases","documents":"/api/acts/ad-s-puma-64-amdt-1-cpi-503-emergency-locator-transmitter/documents"}}