{"id":"F2008L01243","name":"AD/CESSNA 340/35 - Fuel Flow Transducer","slug":"ad-cessna-340-35-fuel-flow-transducer","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73481,"registerId":"commonwealth-F2008L01243-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 340 Series Aeroplanes","sectionType":"division","heading":"Cessna 340 Series Aeroplanes","content":"### Cessna 340 Series Aeroplanes\n\n| AD/CESSNA 340/35 | Fuel Flow Transducer | 5/2008 |\n| ---------------- | -------------------- | ------ |\n\n```html\n

Applicability:

Cessna Model 340A series aeroplanes with the following serial numbers:

0959
0961
0962
0967

0972
0978
0982
0983

0984
0985
0998
1002

1003
1012
1014
1019

Requirement:

1. Inspect fuel flow transducer Cessna part number (P/N) 9910395-9 (Aerosonics Corp P/N 33184-2) on each engine to determine the serial number.

2. If the P/N 9910395-9 transducer has a serial number included in the block 2364 through 2930, replace the transducer with a transducer whose serial number is not included in that block.

Note 1: The requirements of this Directive were most likely accomplished prior to the aircraft’s arrival in Australia and the aircraft’s maintenance records would indicate compliance with FAA AD 80-13-14, this is considered acceptable for compliance with this Directive.

Note 2: FAA AD 80-13-14 Amdt 39-3844 refers.

Compliance:

For Requirement 1 - Prior to the issue of an Australian Certificate of Airworthiness.

For Requirement 2 - Before further flight after the Requirement 1 inspection.

This Airworthiness Directive becomes effective on 8 May 2008.

Background:

This Directive follows an internal review of Australian Airworthiness Directives (AD) which indicated an Australian AD was not issued in response to FAA AD
80-13-14. The FAA AD was originally issued to detect and replace possible defective fuel flow transducers which may cause fuel leaks in the engine compartment.

\n```\n\n| | CASA acknowledges that currently there are no 340A aeroplanes within the affected serial number range registered in Australia. However, as one of these aircraft may be imported at a later date and may not have complied with the FAA AD, CASA is obliged to issue an AD reflecting the requirements of an AD issued by the State of design of the aircraft or appliance, in this case FAA AD 80-13-14. Consequently, given the time since the FAA AD was made and that similar incidents have not been reported in Australia, CASA has decided that the initial compliance should be ‘Prior to the issue of an Australian Certificate of Airworthiness’. |\n| --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png) \nDavid Punshon \nDelegate of the Civil Aviation Safety Authority\n\n6 March 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 340/35","sectionType":"part","heading":"AD/CESSNA 340/35","content":"## AD/CESSNA 340/35","sortOrder":1},{"sectionNumber":"Fuel Flow Transducer","sectionType":"part","heading":"Fuel Flow Transducer","content":"## Fuel Flow Transducer","sortOrder":2},{"sectionNumber":"5/2008","sectionType":"part","heading":"5/2008","content":"## 5/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Substantively mirrors FAA AD 80-13-14 (the same part and serial-number block), but CASA adjusted the compliance trigger: inspection is required 'prior to the issue of an Australian Certificate of Airworthiness' rather than imposing an immediate operational grounding for aircraft already in-service in Australia. This narrows immediate operational impact for the (currently absent) affected fleet while preserving the replacement requirement if the transducer serial is within 2364–2930 (Background; Compliance; Requirements 1–2; Note 2)."},"complexity_factors":["Narrow applicability to specific airframe serial numbers for Cessna 340A makes identification straightforward (Applicability).","Simple two-step technical requirement: inspect the listed part number for its serial number, and replace only if within a defined serial-number block (Requirements 1–2).","Timing of compliance is administrative: inspection required 'prior to the issue of an Australian Certificate of Airworthiness' and replacement 'before further flight' which affects imported aircraft timing but not ongoing operations where not applicable (Compliance).","Permits use of prior FAA compliance evidence in maintenance records, which reduces duplication but requires record verification (Note 1 / Note 2).","Practical cost and logistics: operators bear replacement costs and may need to source compatible transducers; supply or servicing delays could affect aircraft delivery or entry to service (Requirement 2)."],"plain_english_summary":"**What it does:** Requires owners/importers of certain Cessna 340A aeroplanes to inspect the fuel flow transducer (Cessna P/N 9910395-9) to identify its serial number and to replace it if the transducer’s serial falls in the block 2364–2930. **Who it affects and why it matters:** Aircraft owners/operators (and importers seeking an Australian Certificate of Airworthiness) must carry out the inspection and pay for any replacement to prevent potential fuel leaks (Requirements 1–2; Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It was issued specifically to correct an administrative gap — CASA had failed to issue an Australian AD corresponding to the US FAA's 1980 safety directive. The document explicitly states it applies only to aircraft that might be imported in future, with no expansion beyond the original safety issue of defective fuel flow transducers."},"complexity_factors":["Very short document (approximately 300 words)","Only 2 substantive requirements with clear sequential logic","Single defined part number (P/N 9910395-9) and specific serial number range (2364-2930)","No cross-references to other legislation beyond a single reference to FAA AD 80-13-14","Simple conditional structure: IF serial number in range THEN replace","Limited applicability (16 specific aircraft serial numbers only)","Straightforward compliance timeline with only two deadlines"],"plain_english_summary":"This AD mandates inspection of the fuel flow transducer on certain Cessna 340A aeroplanes and requires replacement of any transducer with serial number 2364–2930 before flight. It applies to owners/operators of the specified Cessna 340A airframes and to any such aircraft imported into Australia.\n\nThe measure prevents fuel leaks and fire risk from known defective transducers, aligns Australian requirements with a prior FAA AD, and must be completed before issuing an Australian Certificate of Airworthiness."},"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-cessna-340-35-fuel-flow-transducer","history":"/api/acts/ad-cessna-340-35-fuel-flow-transducer/history","analysis":"/api/acts/ad-cessna-340-35-fuel-flow-transducer/analysis","conflicts":"/api/acts/ad-cessna-340-35-fuel-flow-transducer/conflicts","importantCases":"/api/acts/ad-cessna-340-35-fuel-flow-transducer/important-cases","documents":"/api/acts/ad-cessna-340-35-fuel-flow-transducer/documents"}}