{"id":"F2008L00715","name":"AD/THIELERT/7 Amdt 1 - High Pressure Fuel Line Bracket","slug":"ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72753,"registerId":"commonwealth-F2008L00715-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Thielert Piston Engines","sectionType":"division","heading":"Thielert Piston Engines","content":"### Thielert Piston Engines\n\n| AD/THIELERT/7 Amdt 1 | High Pressure Fuel Line Bracket | 5/2008 TX |\n| -------------------- | ------------------------------- | --------- |\n\n| Applicability: | Thielert Aircraft Engines TAE125-02-99 (CENTURION 2.0) engines, Serial Number (S/N) from 02-02-1500, up to and including S/N 02-02-2279.Note 1: These engines are known to be installed on, but not limited to, Cessna 172 and (Reims-built) F172 series, Piper PA-28 series, APEX (Robin) DR 400 series, and Diamond DA40 and DA42 series aircraft.                                                                                                                                                            |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Unless previously accomplished, install a supporting high pressure fuel line bracket in accordance with Thielert Aircraft Engines Service Bulletin TM TAE 125-1005 P1, Revision 2 dated 6 March 2008 or later NAA approved revision.Note 2: EASA AD 2008-0056-E dated 07 March 2008 refers.                                                                                                                                                                                                                     |\n| Compliance:    | Before Further flight, after the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n|                | This Amendment becomes effective on 13 March 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                                              |\n| Background:    | In-flight engine shutdown incidents were reported on aircraft equipped with a TAE125-02-99 engine. This was found to be mainly the result of a cracked high pressure fuel line between the high-pressure pump and the fuel rail. These cracks were caused by vibration. This AD requires the installation of a supporting bracket on all affected TAE125-02-99 engines.The current Amendment reduces compliance time to ‘before further flight’.The original issue of this AD became effective on 3 March 2008. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n11 March 2008","sortOrder":0},{"sectionNumber":"AD/THIELERT/7 Amdt 1","sectionType":"part","heading":"AD/THIELERT/7 Amdt 1","content":"## AD/THIELERT/7 Amdt 1","sortOrder":1},{"sectionNumber":"High Pressure Fuel Line Bracket","sectionType":"part","heading":"High Pressure Fuel Line Bracket","content":"## High Pressure Fuel Line Bracket","sortOrder":2},{"sectionNumber":"5/2008 TX","sectionType":"part","heading":"5/2008 TX","content":"## 5/2008 TX","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope — requiring installation of a fuel line support bracket on affected Thielert engines. The only change from the original AD is making the compliance deadline more urgent (from a longer compliance period to 'before further flight'). This is a tightening of timing, not an expansion of scope."},"complexity_factors":["Very short document (approximately 250 words)","Only 1 defined term (Serial Number abbreviated as S/N)","Single straightforward requirement with no nested conditions or exceptions","No cross-references to other legislation beyond a reference to an EASA directive for information","Clear applicability table with specific serial number range","Simple compliance deadline ('before further flight')"],"plain_english_summary":"Australia's CASA has issued a mandatory Airworthiness Directive requiring owners/operators of Thielert TAE125-02-99 engines (S/N 02-02-1500 to 02-02-2279) — used in Cessna 172, Piper PA-28, Diamond DA40/DA42, Robin DR400, etc. — to install a support bracket on the high-pressure fuel line per Thielert Service Bulletin TM TAE 125-1005 P1 (Rev 2 or later).  \n\nAction is required before the aircraft next flies to prevent vibration-induced fuel-line cracking and in-flight engine shutdowns."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The amendment did not broaden the affected engine population but shortened the mandatory compliance time to 'before further flight'. The substantive remedy—installing the bracket per the manufacturer's service bulletin—remains the same; the amendment primarily increases the immediacy of compliance (Background; Compliance)."},"complexity_factors":["Narrow applicability: specific engine model and serial number range (Applicability).","Single corrective action: install a supporting bracket per a single service bulletin (Requirement: TM TAE 125-1005 P1 Rev 2).","Urgent compliance deadline: action must be done before further flight, shortening original compliance time (Compliance; Background).","Reliance on external documents and approvals: compliance requires following a manufacturer SB and any later NAA‑approved revision (Requirement).","Cross‑jurisdictional reference: AD refers to EASA AD 2008-0056-E (Requirement Note 2), adding regulatory linkage."],"plain_english_summary":"This airworthiness directive requires fitting a supporting high‑pressure fuel‑line bracket to Thielert TAE125‑02‑99 engines (S/N 02‑02‑1500 through 02‑02‑2279) to prevent vibration‑induced cracks between the high‑pressure pump and the fuel rail. Owners/operators of affected engines must have the bracket installed before further flight, following Thielert Service Bulletin TM TAE 125‑1005 P1 Revision 2 or a later NAA‑approved revision."}},"importantCases":[],"_links":{"self":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket","history":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket/history","analysis":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket/analysis","conflicts":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket/conflicts","importantCases":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket/important-cases","documents":"/api/acts/ad-thielert-7-amdt-1-high-pressure-fuel-line-bracket/documents"}}