{"id":"F2005L01322","name":"AD/S-PUMA/59 - Ice and Rain Protection - Electrical Multi-Purpose Air Intakes","slug":"ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":35073,"registerId":"commonwealth-F2005L01322-current","compilationNumber":null,"startDate":"2026-04-01","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/59 | Ice and Rain Protection - ElectricalMulti-Purpose Air Intakes | 7/2005 |\n| ------------ | ------------------------------------------------------------- | ------ |\n\n| Applicability: | AS 332 helicopter versions C, C1, L and L1 fitted with electrical multi-purpose air intakes (MPAIs) modified per Modifications 0725974 and 0725998 or in compliance with Eurocopter AS332 Service Bulletin (SB) No. 30.00.46 and fitted with pipes Part Numbers (P/N) 332A72-1893-00 (Left Hand side) and P/N 332A72-1893-01 (Right Hand side).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | A: Helicopters equipped with MPAI blanking covers (corresponding to the Modification 332A0725885 or in compliance with Eurocopter AS 332 Service Bulletin (SB) No. 30.00.44).1. Check the bullet seal inflation per instructions described in Alert SB 30.00.52 original issue or later EASA / DGAC approved revisions.B: Helicopters NOT equipped with MPAI blanking covers (corresponding to Modification 332A0725885 or in compliance with Eurocopter AS332 SB No. 30.00.44).2. Add the following temporary prohibitions for flights in the icing conditions listed in Basic Flight Manual Section 2:a) It is forbidden to fly into clouds or in fog at an observed OAT equal to or lower than plus 3° Celsius.b) It is forbidden to fly in rain at an observed OAT within the following temperature range:- equal to or above minus 3° Celsius,- equal to or lower than plus 3° Celsius.c) It is forbidden to fly in falling or recirculating snow at an observed OAT equal to or above minus 3° Celsius.d) It is forbidden to take off after standing-by on ground or taxiing in falling snow at observed OAT equal to or above minus 3° Celsius.3. Check the bullet seal inflation per instructions described in AS 332 Alert SB No. 30.00.52 original issue or later DGAC / EASA approved revisions. |\n\n|             | 4. As a result of the bullet seal inflation check per Requirement 3, if the pressure read on the pressure gage is equal to or more than 3 bars (RH and LH sides), the pipes meet the requirements and no action is necessary before resuming flights.5. As a result of the bullet seal inflation check per Requirement 3, if the pressure read on the pressure gage is less than 3 bars on one of the 2 sides, replace the pipe(s) that does (do) not meet the requirements, as per instructions of the Alert SB 30.00.52 original issue or later DGAC / EASA approved revisions.Note: French DGAC Airworthiness Directive (AD) F-2002-257-080 R1, approved under EASA reference number 2005-1916 dated 22 February 2005 refers. |\n| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Compliance: | 1. On the next engine removal after the effective date of this AD but not later than 550 flight hours or 24 months after the effective date of this AD, whichever comes first.2. With in 10 days after the effective date of this AD but before performing any flight in the conditions defined above.3. On the next engines removal after the effective date of the AD but not later than 550 flight hours or 24 months after the effective date of this AD or before performing any flight in the conditions defined above, whichever comes first.4. No action required.5. Before further flight.                                                                                                                              |\n|             | This Airworthiness Directive becomes effective on 7 July 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |\n| Background: | There have been reports of non-compliant P2 pipes, which might cause insufficient inflation of the bullet seal and lead to engine flame-out during flights in icing conditions.The actions specified in this Airworthiness Directive address the risk associated with non-compliant pipes and resultant engine flame-outs.                                                                                                                                                                                                                                                                                                                                                                                                       |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n26 May 2005","sortOrder":0},{"sectionNumber":"AD/S-PUMA/59","sectionType":"part","heading":"AD/S-PUMA/59","content":"## AD/S-PUMA/59","sortOrder":1},{"sectionNumber":"Ice and Rain Protection - ElectricalMult","sectionType":"part","heading":"Ice and Rain Protection - ElectricalMulti-Purpose Air Intakes","content":"## Ice and Rain Protection - Electrical  \nMulti-Purpose Air Intakes","sortOrder":2},{"sectionNumber":"7/2005","sectionType":"part","heading":"7/2005","content":"## 7/2005","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":6,"scope_assessment":{"changed":false,"description":"This AD is focused on a narrowly defined safety problem: non-compliant P2 pipes that can prevent bullet-seal inflation and risk engine flame-out in icing conditions. The measures (inspection, temporary operational restrictions for affected configurations, and replacement of failing pipes) stay within that original corrective scope. No substantive expansion beyond addressing that specific hardware non-compliance and the immediate operational risk is introduced by the text."},"complexity_factors":["Applicability depends on specific helicopter variants plus two distinct modification/service-bulletin compliance paths and two specific pipe part numbers","Two separate compliance tracks (with blanking covers vs without) that produce different operational requirements","Operational prohibitions defined by combinations of weather type and specific OAT thresholds (multiple temperature boundaries: -3°C and +3°C)","Inspection result is binary but hinges on a quantitative threshold (pressure gauge >= 3 bars) and separate left/right checks","Multiple and conditional compliance deadlines: 'next engine removal', '550 flight hours', '24 months', and 'within 10 days' depending on the action and flight intentions","Cross-references to multiple external documents (Alert SB 30.00.52, SB 30.00.44, Mod numbers, and DGAC/EASA approvals and a French AD)","Replacement required before further flight if threshold not met, creating immediate grounding risk for affected helicopters","Procedural dependency on maintenance organisation capability (engine removal logistics, correct use of Alert SB procedure and pressure measurement)"],"plain_english_summary":"**What this instrument does (mechanically):**\n\n- Orders specific inspections, temporary flight prohibitions and parts replacement for certain Eurocopter AS 332 (Super Puma) helicopters that use the electrical multi-purpose air intakes (MPAIs).  The directive targets a possible defect in the P2 intake pipes that can prevent proper inflation of a \"bullet\" (seal), which can lead to engine flame-out in icing conditions.\n\n**Who is affected:**\n\n- Owners and operators of Eurocopter AS 332 helicopters, versions C, C1, L and L1, that are modified per the listed modification numbers or service bulletins and that are fitted with the specified P/N pipes (332A72-1893-00 left; 332A72-1893-01 right).\n- Maintenance organisations that perform the prescribed checks, pipe replacements and engine removals.\n\n**Why it matters (purpose claim and the mechanical test):**\n\n- The regulator states the AD is intended to remove the risk of engine flame-out caused by insufficient inflation of the bullet seal in the MPAI assembly when operating in icing/rain/snow conditions.  The AD pursues that purpose by requiring inspections of seal inflation, temporary operational restrictions for aircraft without a particular blanking cover modification, and replacement of pipe(s) that fail the pressure check.\n\n**How it works (step-by-step, with the AD's requirements):**\n\n- Applicability: applies only to the listed AS 332 variants fitted with electrical MPAIs modified per the named modifications or SB, and fitted with the two specific pipe part numbers.\n\n- Two tracks depending on configuration:\n  - Requirement A (helicopters with MPAI blanking covers): require a pressure check of the bullet seal inflation following Alert Service Bulletin (SB) 30.00.52 (original or later approved revision).\n  - Requirement B (helicopters without the MPAI blanking covers):\n    - 1) Add temporary prohibitions to the flight manual prohibiting flight into certain cloud/fog/rain/snow conditions at specified outside air temperatures (OAT) (see below).  These are operational (pilot/operator) restrictions.\n    - 2) Perform the same bullet seal inflation check per Alert SB 30.00.52.\n\n- The operational prohibitions (Requirement B, item 2): operators must not fly in the following meteorological combinations (these are immediate operational constraints until compliance):\n  - Flying into cloud or in fog is forbidden at observed OAT <= +3°C.\n  - Flying in rain is forbidden at observed OAT between -3°C and +3°C inclusive.\n  - Flying in falling or recirculating snow is forbidden at observed OAT >= -3°C.\n  - Taking off after standing on ground or taxiing in falling snow is forbidden at observed OAT >= -3°C.\n\n- Pressure check result and follow-up (Requirements 4–5):\n  - If the pressure gauge reads >= 3 bars on both left and right sides, the pipes pass and no further action is required.\n  - If pressure < 3 bars on one or both sides, the affected pipe(s) must be replaced as per Alert SB instructions (original or later approved revision) before further flight.\n\n- Compliance timings (important practical constraints):\n  - The pressure check and any required replacements must be performed either at the next engine removal after the AD’s effective date or within 550 flight hours or 24 months after the effective date, whichever occurs first — except where shorter deadlines apply for operational safety.\n  - Some requirements must be met within 10 days of the AD’s effective date if the operator plans to fly in the prohibited conditions before the longer compliance window expires.\n  - Replacement of any failing pipe is required before further flight.\n\n**Who pays and who decides:**\n\n- Operators/owners pay: costs are borne by aircraft operators/owners (inspection labour, engine removal scheduling costs, replacement pipe parts and installation, and potential operational downtime).\n- The regulator (delegate of CASA) decides compliance is mandatory by issuing the AD and by referencing the approved service bulletins and foreign ADs.\n\n**Costs, incentives, trade-offs and practical effects:**\n\n- Direct costs: inspections, possible pipe replacements, and engine removals (the AD ties the main inspection to the next engine removal or fixed flight-hour/time windows) increase maintenance cost and downtime.\n- Operating constraints: the temporary prohibitions on flights in certain icing/rain/snow/OAT combinations reduce operational flexibility for operators who have the non-blanking-cover configuration.\n- Incentives created: operators have an incentive to either (a) ensure pipes meet the pressure standard or (b) install/retain the blanking cover modification (if that reduces the operational restrictions or simplifies compliance), and to schedule the next engine removal earlier if practical.\n- Concentrated vs diffuse effects: costs are concentrated on AS 332 operators fitted with the relevant configuration; benefits (reduced risk of engine flame-out) are safety gains distributed to crew/passengers and third parties.\n- Supply and timing risk: availability of replacement pipes and qualified maintenance slots could constrain compliance and prolong aircraft downtime. The AD references the manufacturer Alert SB and other authorities (DGAC/EASA) which may affect parts supply or approved procedures.\n- Compliance burden and enforcement: the measure imposes specific measurable criteria (pressure >= 3 bars) which reduces interpretive discretion, but it requires strict record-keeping, scheduling of engine removal events, and adherence to the temporary flight prohibitions until compliance.\n\n**Implementation risk and unintended consequences to watch for:**\n\n- Measurement accuracy: the instruction relies on correct pressure-gauge readings and adherence to the Alert SB procedure; inconsistent measurement technique or faulty gauges could generate false positives/negatives.\n- Operational disruption: the temperature-and-weather based flight prohibitions can disrupt missions at short notice and may force operators to cancel or reroute flights in marginal weather conditions.\n- Parts lead times: if many operators need replacement pipes, parts shortages could delay safe return-to-service.\n\n**Source attribution and cross-references:**\n\n- The AD references Eurocopter Alert SB 30.00.52 (original issue or later DGAC/EASA-approved revisions), other AS 332 SBs, specific modification numbers, and French DGAC AD F-2002-257-080 R1 (EASA ref. 2005-1916). Those cross-references define the exact inspection and replacement procedures the operator must use.\n\n(End of summary.)"},"kimi_summary":{"content_quality":"ok","complexity_score":6,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with focused scope. It addresses a specific safety defect in specific helicopter models with specific equipment configurations. The document does not show scope creep; it remains tightly targeted at the ice/rain protection system defect in the identified Super Puma variants."},"complexity_factors":["Bifurcated requirements based on equipment configuration (blanking covers vs. no blanking covers)","Multiple compliance deadlines with 'whichever comes first' logic (550 flight hours OR 24 months OR next engine removal)","Cross-references to external documents: Eurocopter Service Bulletins (SB 30.00.44, SB 30.00.46, Alert SB 30.00.52), French DGAC AD F-2002-257-080 R1, and EASA reference 2005-1916","Specific part number dependencies (P/N 332A72-1893-00 and 332A72-1893-01)","Modification number tracking (0725974, 0725998, 332A0725885)","Nested conditional logic: Requirement 5 only applies if Requirement 3 check fails","Technical aviation terminology requiring domain knowledge (bullet seals, P2 pipes, MPAIs, OAT — Outside Air Temperature)"],"plain_english_summary":"This mandatory CASA Airworthiness Directive targets certain Eurocopter AS332 Super Puma helicopters with specified P2 pipes in modified electrical multi‑purpose air intakes, where faulty pipes can prevent proper bullet‑seal inflation and cause engine flame‑out in icing/rain. It requires inspection of seal inflation pressure, immediate operational restrictions for aircraft without blanking covers, and replacement of any pipe reading under 3 bar before further flight. Compliance is time‑limited and intended to prevent catastrophic engine failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes","history":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes/history","analysis":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes/analysis","conflicts":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes/conflicts","importantCases":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes/important-cases","documents":"/api/acts/ad-s-puma-59-ice-and-rain-protection-electrical-multi-purpose-air-intakes/documents"}}