AD/CESSNA 180/88 Amdt 1 - Flexible Fuel Hose End Fittings

The central legal concept is the Airworthiness Directive itself. Under CASR Part 39, an AD is a direction issued by CASA that specifies mandatory inspections, modifications, or other actions to address an unsafe condition in an aircraft or aeronautical product. An AD has the force of law and is binding on the registered operator, the pilot in command, and any person performing maintenance. Failure to comply can render the aircraft unairworthy and ground it. The AD here is a “CASA adoption” of a Federal Aviation Administration (FAA) AD (2007-08-03), which itself superseded FAA AD 2006-17-04. This demonstrates the principle of cross border regulatory harmonisation: Australia often adopts or adapts FAA ADs under bilateral airworthiness agreements, but the Australian version has its own legal force and compliance date.

Another key concept is “time in service” (TIS). Compliance is measured not by calendar days but by actual operating hours. The 5 hour TIS requirement means that if the aircraft has not been flown since the effective date, the inspection must be performed before the sixth hour of flight. For an owner who flies two hours per week, the compliance window is about two and a half weeks from the first flight after 25 April 2007. This creates a real risk of inadvertent non-compliance if the aircraft is flown to another base without the inspection being done first.

The AD distinguishes between Group 1 aircraft (not equipped with the Garmin G1000 avionics system) and Group 2 aircraft (equipped with G1000). The hose routing differs between these groups, specifically the presence or absence of a fuel manifold valve in the sequence. The Group 1 list includes separate lines for turbo models, while Group 2 does not distinguish turbo because the G1000 installation changes the fuel system architecture. This distinction imposes a duty on the person conducting the inspection to correctly identify which group the aircraft falls into based on the avionics fitment, not merely the model designation.

The concept of “torque paint” or “torque putty” is also central. This is a visual indicator applied after final torquing to show that the fitting has been properly tightened and has not rotated since. The AD requires removal of all old torque putty before re-torquing. This step is not merely administrative: it ensures that any subsequent movement will be visible. The appendix then mandates application of fresh putty after correct torque is achieved.

Finally, the AD incorporates by reference the Cessna Service Bulletin SB07-71-01 Revision 1, dated 16 March 2007, or later FAA approved revisions. This means the specific torque values and any additional detail are not set out in the legislative instrument itself; they must be obtained from the manufacturer. The AD gives the person performing the inspection the right to use later FAA approved revisions, which introduces a degree of flexibility but also a compliance risk: the revision must be truly FAA approved and not merely a draft.

The primary affected parties are the registered owners of approximately 600 to 700 Cessna 182T and T182T aircraft with serial numbers falling within the ranges listed in the AD: Model 182T S/N 18281527 through 18281889, plus a few specific numbers (18281892, 18281895, 18281897, 18281899, 18281901, 18281904); and Model T182T S/N T18208381 through T18208659, plus several specific numbers. These aircraft are mostly in private, corporate, and flight school operations. The AD also affects approved maintenance organisations (AMOs) and licensed aircraft maintenance engineers (LAMEs) who perform the work. They must have access to the Cessna service bulletin and must follow the appendix instructions exactly.

Pilots and operators are affected because the AD imposes a pre flight airworthiness condition: if the inspection has not been completed within the 5 hour window, the aircraft is not airworthy and must not be flown. This can disrupt charter operations, training schedules, and personal flying. Insurance companies may also be affected because non compliance could void coverage or affect claims if an accident occurs. Buyers and sellers of affected aircraft must consider whether the AD has been complied with as part of the pre purchase inspection and disclosure obligations.

Indirectly, the AD affects Cessna as the manufacturer, who benefits from the mandatory adoption of its service bulletin, and CASA as the regulator who must administer compliance monitoring. There is also an effect on the aftermarket parts industry: if any fitting is damaged during the torque check, replacement parts must be sourced, which may create shortages or price increases.

The compliance burden is not trivial. For a typical owner, the labour cost of removing cowlings, performing the torque check on up to six hose joints, applying torque putty, and replacing cowlings is likely two to four hours at a commercial maintenance rate. If a non hose end fitting rotates and requires disassembly, cleaning, seal replacement, and reinstallation, the job could extend to eight hours or more. For a small operator with multiple affected aircraft, the aggregate cost can be significant. The AD does not provide any government subsidy or tax offset for these costs.

The AD imposes several specific duties. The primary duty is on the registered operator: to ensure that the inspection and any corrective action is carried out within the prescribed compliance time. This duty arises under CASR Part 39 and the Civil Aviation Act 1988 section 20A, which makes it an offence to operate an aircraft that does not comply with an applicable AD. The operator cannot delegate this duty; even if a maintenance organisation performs the work, the operator remains legally responsible for the aircraft’s airworthiness.

The person performing the inspection (usually a LAME or an AMO authorised under the operator’s maintenance control manual) has a duty to follow the procedures in the appendix exactly. This includes removing all old torque putty, using a suitable tool to restrain the opposite fitting, stopping the procedure if any non hose end fitting rotates, and then disconnecting the joint, cleaning, examining, and replacing the rotated fitting or seals before reinstallation. The technician also has a right to use a later FAA approved revision of the service bulletin, not necessarily the exact revision cited in the AD.

The operator has a right to request an alternative means of compliance from CASA. Under CASR 39.035, CASA may approve an alternative method if it provides an equivalent level of safety. This could be necessary if, for example, the service bulletin is unavailable or if the aircraft has been modified such that the torque values are different. However, this right is subject to CASA’s discretion and there is no guaranteed turnaround time.

The AD also implies a duty on the operator to maintain records. After compliance, the maintenance logbook must be endorsed with the AD number, the date of compliance, the hours TIS at compliance, and the signature and licence number of the person certifying the work. Failure to document could lead to enforcement even if the work was actually done.

Owners also have the right to sell an aircraft that has not yet complied with the AD, but they must disclose the non compliance to the buyer. The buyer then assumes the duty to comply within the remaining TIS window, if any. This creates a transactional risk: the buyer may have little time left to perform the inspection before the aircraft must be grounded.

Operating an aircraft that does not comply with an AD is a serious breach. Under the Civil Aviation Act 1988 section 20A(1), a person commits an offence if they operate an aircraft when an applicable AD has not been complied with. The maximum penalty for an individual is 50 penalty units (currently $11,100 as of 2007, adjusted for inflation) and for a body corporate, 250 penalty units ($55,500). Additionally, under section 20A(1A), there is an aggravated offence if the operation is reckless as to whether the AD was not complied with, carrying up to two years imprisonment for individuals. These penalties apply per flight, so a series of non compliant flights could attract multiple charges.

CASA also has administrative enforcement powers. It can issue a direction to ground the aircraft until compliance is achieved. It can suspend or cancel the aircraft’s certificate of airworthiness or registration. It can impose conditions on the operator’s air operator’s certificate if it holds one. In practice, CASA’s enforcement branch conducts random audits of maintenance records; detection of a missing AD entry is one of the most common findings.

The AD itself does not specify a penalty; it relies on the general provisions of the Act and CASR. The enforcement risk is heightened because the compliance time is only 5 hours TIS. An operator who flies 10 hours in two days without doing the inspection will already be in breach. The cost of non compliance can far exceed the cost of doing the work, but the deterrence effect varies among owners.

There is also potential for civil liability. If an accident occurs due to a fuel system failure that could have been prevented by the AD, the operator may face negligence claims from injured parties. The AD sets a regulatory standard of care; failure to meet it could be evidence of negligence per se.

This AD is made under the Civil Aviation Safety Regulations 1998, specifically Part 39 (Airworthiness Directives). It therefore forms part of the broader framework of continuing airworthiness regulation under the Civil Aviation Act 1988. It interacts with the Civil Aviation Safety Regulations Part 42 (Continuing Airworthiness) and Part 145 (Approved Maintenance Organisations). The AD takes precedence over any conflicting maintenance manual instructions or service bulletins; the mandatory action of the AD cannot be superseded by a manufacturer’s less restrictive recommendation.

The AD also interacts with the FAA’s regulatory system. The background notes that FAA AD 2007-08-03 (Amendment 39-15020) is the source parent. In Australia, CASA may issue a separate AD that is either identical to or differs from the FAA version. In this case, the CASA AD expands the serial number range beyond that of the original FAA AD and adds the appendix. For aircraft that are also registered in the United States, the operator must comply with both ADs, though the procedures are functionally identical. This can create a double compliance burden if the compliance dates differ.

The AD incorporates by reference the Cessna Service Bulletin. Under the Legislation Act 2003, incorporation of external documents is permissible, but the operator must have access to that document. The AD does not provide a free copy; the operator must purchase it from Cessna or obtain it through a dealer. This adds a transaction cost.

The AD also interacts with other Australian laws. Under Work Health and Safety Acts, a maintenance engineer who is required to disconnect fuel system components must follow safe procedures, including ensuring no fuel leaks or ignition sources. The AD’s appendix does not address safety precautions; the engineer must separately comply with WHS obligations. Additionally, under the Competition and Consumer Act 2010, an operator who sells an aircraft with an uncompleted AD and fails to disclose it could be liable for misleading or deceptive conduct.

The AD is an amendment to an existing instrument. The original AD/CESSNA 180/88 first became effective on 4 September 2006. That original AD adopted FAA AD 2006-17-04 (Amendment 39-14725). The original applied to a smaller range of serial numbers and did not include the detailed appendix. Between 4 September 2006 and 25 April 2007, operators of the original serial numbers were required to comply with the original inspection and torque requirements, which presumably referenced an earlier version of the Cessna service bulletin.

On 5 April 2007, the FAA issued AD 2007-08-03, which superseded AD 2006-17-04 and expanded the applicability to additional serial numbers. CASA then issued this Amendment 1 to AD/CESSNA 180/88, effective 25 April 2007, to align with the FAA action. The amendment added the additional serial numbers listed in the applicability table and introduced the appendix containing the procedural steps. The appendix is new content not present in the original AD.

The amendment history is important for compliance: if an operator’s aircraft falls into the original serial number range, they should have already complied with the original AD. If they did, then they must perform the new inspection requirements only if the original compliance was not done to the revised torque values in the later service bulletin. However, the AD does not specify whether previous compliance satisfies the new requirements; it is silent on that point. A conservative interpretation is that the new AD requires a fresh inspection even if the aircraft was already inspected under the original AD, because the compliance interval is 5 hours TIS after the effective date of this amendment. This could be a gotcha: an operator who thought they were compliant may now have a new obligation.

No further amendments are noted in the text. The AD remains in force unless superseded by a later instrument or withdrawn by CASA. Later amendments may have occurred after 2007, but the source text does not mention them.

There is no reported litigation directly challenging this AD. Airworthiness directives are rarely the subject of judicial review in Australia. The Administrative Decisions (Judicial Review) Act 1977 (ADJR Act) allows a person aggrieved by a decision to apply for review, but the AD itself is a legislative instrument, not a reviewable decision under the ADJR Act. Any challenge would have to be by way of constitutional writs or an action for a declaration that the AD is invalid. No such case appears in the public record.

The absence of litigation does not mean the AD is beyond challenge. Grounds could include that the AD was made without sufficient evidence of an unsafe condition, that the delegate exceeded power under CASR Part 39, or that the AD is unreasonable in the sense that it imposes a disproportionate burden. But given the standard of review for safety regulations, courts grant substantial deference to CASA’s technical judgment.

There is also no reported case of a person being prosecuted for breach of this specific AD. This likely reflects the fact that most operators comply, or that CASA pursues administrative remedies rather than prosecution. However, the risk of prosecution remains. A diligent lawyer advising an operator should note that the AD creates a legal duty and that any breach could be used as evidence of negligence in a civil claim following an accident. In a hypothetical engine failure due to a loose fuel line, if the operator had not performed the AD, the plaintiff’s bar would use the non compliance as strong evidence of fault.

Several aspects of this AD can trap the unwary. First, the applicability is extremely narrow but easy to misread. The header says “Cessna 180, 182 and Wren 460 Series Aeroplanes”, which suggests a wide scope, but the actual applicability is limited to specific 182T and T182T serial numbers. An owner of a Cessna 180 or a Wren 460, or a 182 with a serial number outside the listed ranges, is not subject to this AD, but they might mistakenly think they are after seeing the title. Conversely, an owner of a 182T with a serial number just outside the listed range might assume they are safe, but the AD includes a note that later models may be added by future amendments.

Second, the Group 1 versus Group 2 distinction depends on whether the aircraft is equipped with the Garmin G1000 system. An owner may not know whether their aircraft is G1000 equipped, or may have a retrofit. The AD does not provide guidance on how to determine this; the person performing the inspection must check the avionics configuration. If an aircraft has been retrofitted with G1000 after delivery, it may fall into Group 2, but the serial number list was published before such retrofits, creating potential ambiguity.

Third, the compliance time of 5 hours TIS after the effective date is very short. An operator who flies the aircraft to a distant maintenance base on day one after the effective date will consume some of those 5 hours before the inspection can be performed. If the flight is 3 hours, only 2 hours remain. This creates a risk that the aircraft will be flown again before the inspection is done, putting the operator in breach. The AD does not allow a grace period for ferry flights to a maintenance facility.

Fourth, the appendix step that requires stopping the torque procedure if any non hose end fitting rotates is a significant escalation trigger. It converts a simple torque check into a repair task that may require sourcing new fittings or seals. The AD does not specify what torque values should be used when reinstalling those rotated fittings; presumably they must come from the same service bulletin, but the bulletin may not cover all fittings. This can cause a maintenance delay.

Fifth, the AD requires removal of old torque putty before torquing. If an aircraft has been maintained previously, it may have multiple layers of putty from different maintenance events. The instruction does not specify how to remove it without damaging the fitting. Using a solvent that enters the fuel line could cause contamination.

Sixth, the AD relies on the Cessna service bulletin which is not reproduced in the legislative instrument. An operator who does not purchase the bulletin cannot comply. The bulletin may be copyrighted and may not be available free of charge.

Seventh, the AD does not specify a recurring interval. An operator who complies now may assume they are done forever. But if later service experience reveals that the fittings loosen over time, CASA may issue a new AD requiring periodic checks. The current AD creates a baseline but not a guarantee of permanent airworthiness.

To comply with AD/CESSNA 180/88 Amdt 1, an operator should follow these steps, which are derived from the AD text and the appendix.

1. Determine applicability: Check the aircraft model and serial number against the lists in the AD. If the aircraft is a Cessna 182T or T182T with a serial number falling within the ranges, or the specifically listed individual numbers, the AD applies. Also identify whether the aircraft is Group 1 (non G1000) or Group 2 (G1000 equipped). This determines which hoses must be inspected.

2. Obtain the service bulletin: Purchase or otherwise obtain a copy of Cessna Service Bulletin SB07-71-01, Revision 1, dated 16 March 2007, or a later FAA approved revision. This bulletin contains the required torque values for each hose end fitting.

3. Plan compliance within 5 hours TIS: The inspection must be performed within 5 hours after the first flight following the effective date of 25 April 2007. If the aircraft has already flown some hours since that date, calculate the remaining hours. The inspection must be completed before the aircraft accrues a total of 5 hours TIS after that date.

4. Perform the inspection: Remove the upper and side cowlings. Remove any existing torque putty or paint from the hose end fittings. For each of the applicable hoses listed in the AD, follow the procedure:

   • Using a suitable tool, loosen the hose end fitting while restraining the opposite fitting to prevent rotation.
   • Compare the torque value at which the fitting loosens with the specified torque from the service bulletin. If incorrect, proceed to re torque.
   • If any non hose end fitting rotates during this process, stop immediately. Disconnect the entire joint. Remove the rotated fitting, clean it, visually examine it for damage, and replace it or the seals as needed. Reinstall the fitting to the correct torque, then reconnect the hose end fitting.
   • Once the hose end fitting is at the correct torque, apply the applicable torque paint or putty to mark the fitting.

5. Document compliance: Enter the AD number, the date of compliance, the aircraft TIS at compliance, the torque values found, any fittings replaced, and the signature and licence number of the certifying person in the aircraft maintenance logbook or the applicable airframe log. Keep a copy of the service bulletin used.

6. Verify before flight: Before each flight, ensure that the AD has been complied with. If the 5 hour TIS window has expired without compliance, the aircraft is unairworthy and must not be flown until the AD is satisfied.

7. Consider alternative means: If compliance within 5 hours is impossible due to parts unavailability or other reasons, contact CASA to request an alternative means of compliance under CASR 39.035. Be prepared to provide evidence that the delay is unavoidable and that an equivalent level of safety is maintained in the interim.

8. Monitor for future changes: After compliance, stay alert for any new ADs that may impose recurring inspections or supersede this one. Subscribe to CASA’s airworthiness bulletin service or check regularly.

The cost of compliance is the labour, the cost of new parts if any fitting is damaged, and the opportunity cost of aircraft downtime. For most owners, this will be several hundred dollars. The alternative cost of non compliance is far higher in terms of fines, grounding, and liability risk. The AD is a mandatory legal obligation that cannot be waived by the operator. A competent maintenance provider should be able to complete the task within a few hours on a properly equipped aircraft, assuming no unexpected rotations occur.