AD/BEECH 50/34 Amdt 1 - Forward Elevator Cable

Airworthiness Directive (AD). A binding regulatory instrument issued by CASA under the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998. An AD mandates corrective action to address an unsafe condition found in an aircraft type. Failure to comply is an offence under regulation 39.001 of the Civil Aviation Safety Regulations 1998 (or equivalent provision at the time of issue).

Forward elevator control cable assembly. The cable that transmits pilot input to the elevator control surface. The AD concerns only the “forward” cable, not the entire elevator control system. The cable assembly includes the cable itself and any terminal fittings.

Figure 1 applicability criteria. The AD applies only to aeroplanes fitted with a forward elevator control cable configuration that matches Figure 1. Figure 1 is adapted from the Beechcraft Illustrated Parts Catalogue and was introduced in this amendment to help registered operators self determine applicability. If the aircraft’s cable routing differs from Figure 1, the AD does not apply.

Inspection criteria. The required inspection must check for wear, broken wires and corrosion of the forward elevator cable assembly. The AD does not specify a method but provides acceptable means of compliance by reference: FAA Advisory Circular AC 43 13 1B, Chapter 7, Section 8, paragraph 7 149(d), or Beechcraft maintenance data. The operator may also use other methods if they can be shown to be equivalent, but the AD explicitly endorses those two.

Defective cable. A cable that fails the inspection criteria , i.e., it shows unacceptable wear, broken wires, or corrosion , is considered defective. The AD mandates removal from service.

Prohibition on reinstallation. Cables or parts removed under Requirement 2 must not be installed on any aircraft. This is a permanent quarantine. No repair is permitted; the only allowed action after removal is scrapping.

Positioning flight. A limited concession. If inspection cannot be performed at the current location, one flight with only the pilot on board is allowed to move the aircraft to a place where inspection can be done. This flight is permitted only for that purpose.

Credit for prior compliance. Aircraft that had the forward elevator cable replaced or inspected in accordance with the original issue (16 January 2012) are deemed to have satisfied Requirement 1 of this amendment. They do not need to repeat the inspection unless a later inspection under the manufacturer’s ICA triggers a need.

Manufacturer’s Instructions for Continuing Airworthiness (ICA). The document published by Beechcraft (now Textron Aviation) that sets out ongoing inspection intervals and criteria. The AD explicitly relies on these ICA as sufficient to prevent cable failure, so the original repeat inspection and 15 year replacement mandates are removed. This shifts the compliance emphasis from a one size fits all rule to adherence to manufacturer recommendations.

Amendment structure. The AD is a CASA instrument signed by a delegate. It references an original issue and this amendment. The effective dates are clear: original 16 January 2012; amendment 27 February 2012. The amendment makes two changes: clarifying applicability via Figure 1 and removing the repeat/age requirements. All other parts of the original AD remain.

Background as interpretive aid. The background section is not operative but explains the safety rationale and the reasons for the amendment. It can be used to understand the intended scope of the inspection and why the mandatory age replacement was removed.

The AD primarily affects registered operators of Beechcraft 50 series (Twin Bonanza) aeroplanes that have the forward elevator cable configuration shown in Figure 1. These operators bear the duty to arrange inspection or replacement and to ensure that any defective cable is removed. The AD also affects aircraft maintenance organisations (AMOs) and licensed aircraft maintenance engineers (LAMEs) who perform the inspection or replacement. They must be familiar with the acceptable means of compliance (FAA AC 43 13 1B or Beechcraft data) and must certify the work in the aircraft maintenance release. Pilots are affected indirectly: the one positioning flight allowance permits only a pilot on board, meaning no passengers or cargo may be carried during that repositioning. Sellers and installers of used aircraft parts are affected by Requirement 3: they must not supply or install any forward elevator cable or part that was removed under this AD. That prohibition is absolute and applies even if the cable appears serviceable after removal. Aircraft owners who lease aircraft are affected because the compliance responsibility rests with the registered operator, who may pass contractual duties to the lessee. Manufacturers (Textron Aviation, originally Beechcraft) are affected insofar as their ICA now forms the continuing compliance benchmark; any changes to those ICA may trigger further obligations. The AD does not directly impose duties on private owners who do not operate their own aircraft, but they must ensure the operator is compliant if they allow use of the aircraft. CASA itself is affected as the issuer and enforcer: it must maintain records of compliance, handle reports of non compliance, and potentially take enforcement action. The AD’s narrowing of applicability via Figure 1 may reduce the population of affected aircraft, which benefits operators whose cable configuration is different and who may have been erroneously complying under the original broader applicability. However, it also imposes a verification cost: each operator must obtain or reproduce Figure 1, compare it to their aircraft, and confirm whether the AD applies. For fleet operators with multiple Beechcraft 50 series aircraft, the compliance burden is multiplied if each aircraft has a different cable configuration. The AD does not specify who provides Figure 1; the operator must locate it from the AD text or from Beechcraft parts catalogues. The removal of the 15 year mandatory replacement affects all aircraft with cables older than 15 years that had not yet been replaced under the original AD - they are no longer forced to replace at that age, which reduces cost for those operators but shifts risk to condition based monitoring.

Duty to inspect or replace (Requirement 1). The registered operator must ensure that the forward elevator cable assembly is either inspected for wear, broken wires and corrosion, or replaced. The choice is the operator’s, but if the inspection reveals a defect, replacement becomes mandatory under Requirement 2. The inspection must be performed using an acceptable means: FAA AC 43 13 1B (Ch 7, Sec 8, para 7 149(d)) or Beechcraft maintenance data. The operator may also use another method if it can be justified as equivalent, but the AD does not explicitly permit that. The time limit: before further flight after 16 January 2012, unless the aircraft had already complied with the original AD (in which case no further action under this requirement is needed).

Right to a positioning flight. If the inspection cannot be carried out at the aircraft’s current location, one positioning flight with only the pilot on board is allowed to transport the aircraft to a place where inspection can be done. This is a limited right: only one flight, no passengers or cargo, pilot only. It is a concession to avoid stranding an aircraft in a remote location without maintenance facilities.

Duty to remove defective cables (Requirement 2). Any cable found defective during inspection must be removed from service before further flight. There is no grace period. “Defective” means failing the wear/broken wires/corrosion criteria.

Prohibition on reinstallation (Requirement 3). A cable removed under Requirement 2 must not be installed on any aircraft. This applies to the whole cable assembly or any parts of it. The prohibition is permanent and absolute. It extends to sale, transfer, or re use on a different aircraft.

Right to rely on prior compliance. An aircraft that already had the cable inspected or replaced in accordance with the original AD (effective 16 Jan 2012) is considered compliant with Requirement 1 of this amendment. This means that operator does not need to repeat the inspection unless a later inspection under the manufacturer’s ICA reveals a need. However, this credit applies only to Requirement 1; if the cable later becomes defective for another reason, Requirement 2 still applies.

Duty to follow manufacturer’s ICA (continuing). Although the AD does not explicitly mandate that the operator follow the ICA, the background states that the ICA are considered satisfactory to prevent cable failure. By removing the mandatory repeat inspections and age replacement, CASA is effectively delegating ongoing airworthiness management to the ICA. If the operator chooses not to follow the ICA, it may create an unsafe condition and could be used as evidence of non compliance with the operator’s general duty under regulation 42.10 of the Civil Aviation Safety Regulations (aircraft to be maintained in an airworthy condition). The AD creates an implicit expectation that the ICA will be followed, though it does not say “you must follow the ICA”. This creates some legal uncertainty: the operator might be compliant with the AD but still in breach of the broader duty if the cable fails due to not following the ICA.

Right to use alternative inspection data. The AD explicitly accepts FAA AC 43 13 1B and Beechcraft data as acceptable means of compliance. This gives operators flexibility. However, it does not endorse later versions of the FAA AC or alternative maintenance manuals; the operator should verify that the edition referenced is still valid.

Obligation to document compliance. Not stated in the AD, but a necessary consequence: the inspection and any replacement must be certified in the aircraft maintenance release and logbook as part of the continuing airworthiness records. CASA may audit these records.

The AD itself does not set out specific penalty amounts because it is issued under the broader criminal and civil penalty regime of the Civil Aviation Safety Regulations 1998 (CASR). For the period around 2012, the relevant provisions were regulation 39.001 of the Civil Aviation Safety Regulations 1998, which made it an offence to operate an aircraft in contravention of an airworthiness directive. Under the Civil Aviation Act 1988, section 20AB provides for infringement notices, and section 23 allows CASA to suspend or revoke certificates for non compliance. Penalties at the time could be up to 50 penalty units (about AUD 5,500 for an individual) per offence, and for body corporates up to 250 penalty units (about AUD 27,500), with daily penalties for continuing offences. More serious cases could lead to prosecution under section 22 of the Act (dangerous operation of aircraft). In practice, CASA enforcement includes:

• Issuing a notice of non compliance requiring rectification within a specified period.
• Issuing an infringement notice (on the spot fine).
• Suspending the airworthiness certificate of the aircraft until compliance is shown.
• Referring the matter for prosecution (rare for an AD breach alone but possible if combined with other safety breaches).

Consequences beyond CASA penalties. Breach of an AD can void insurance coverage and expose the operator to civil liability in the event of an accident. It may also be used as evidence of negligence in a common law claim.

Enforcement by delegated persons. The AD was signed by a delegate of CASA. CASA surveyors and authorised persons may inspect aircraft and records to verify compliance. The AD does not confer a private right of action; only CASA can enforce.

Practical enforcement probability. This AD concerns a critical flight control cable. CASA likely prioritises compliance because failure could cause loss of control. The original AD was issued quickly after a single cable separation report, showing a low tolerance for delay. The amendment relaxed some requirements but CASA still expects full compliance with the remaining duties.

Positions flight limitation. If an operator uses the positioning flight allowance beyond the single flight or carries passengers, that is a further breach of the AD and likely of the operator’s certificate.

Record keeping. Lack of documented inspection may be treated as non compliance. Operators should retain evidence of inspection or replacement.

Self reporting. If an operator discovers a defective cable after the compliance deadline but before further flight, they must ground the aircraft. Failure to ground is a separate contravention.

Supply chain liability. The prohibition on reinstallation of removed cables creates a duty for part suppliers and maintenance organisations. Selling or installing a cable removed under this AD could attract liability for aiding and abetting a breach.

Limitation period. Prosecutions under the Civil Aviation Act generally must be commenced within two years of the offence (section 20AE). This may influence enforcement strategy.

Civil Aviation Safety Regulations 1998 (CASR). This AD is issued under the CASR framework, likely under regulation 39.003 (issue of airworthiness directives) which was in force at the time. The AD’s legal force derives from regulation 39.001, which prohibits operation of an aircraft in contravention of an AD. The AD also interacts with:

• CASR Part 145 (maintenance organisations): AMOs performing the inspection must be approved for work on Beechcraft 50 series airframe. The inspection can be performed by a LAME or by the operator if they hold the appropriate authorization.
• CASR Part 66 (licensing): The person certifying the inspection must hold a category B1 (mechanical) license with appropriate type rating or have been granted an extension.
• CASR Part 42 (continuing airworthiness): Operators have a general duty to ensure the aircraft is maintained in an airworthy condition. Compliance with this AD is a necessary but not sufficient condition; the operator must also follow the manufacturer’s ICA even though the AD no longer mandates it by a dead line.

FAA Advisory Circular AC 43 13 1B. The AD accepts this as an acceptable means of compliance. In Australia, FAA ACs are not automatically regulatory; they become relevant through this specific endorsement. If an operator uses a different edition or a later version, they should confirm it does not conflict with the AD’s reference.

Beechcraft maintenance data. The AD references Beechcraft data without specifying a revision. The operator must use the data that was current at the time of the inspection. If the maintenance manual has been amended since the AD, the later version should generally be used unless it would conflict with the AD’s requirements.

Manufacturer’s Instructions for Continuing Airworthiness (ICA). The AD acknowledges the ICA and relies on them to replace the mandatory age replacement and repeat inspections. However, the ICA are not themselves regulatory unless CASA adopts them by reference. The operator should follow the ICA as a recommended practice; failure to do so may breach general airworthiness duties but not this AD directly. This creates a tension: the AD removes the prescriptive rule because the ICA are „satisfactory“, but it does not make the ICA mandatory. The operator is left with a less certain legal status.

Civil Aviation Act 1988. Section 20AB allows CASA to issue infringement notices for minor breaches. Section 23 allows CASA to suspend or cancel certificates. Section 22 (endangering safety of aircraft) could apply if non compliance leads to accident.

Common law. The AD sets a standard of care. In a negligence action, breach of an AD is prima facie evidence of negligence. Compliance with the AD may not be a complete defence if the operator knew of additional risks not covered by the AD.

International obligations. Australia is a signatory to the Chicago Convention. The AD follows the international practice of issuing airworthiness directives based on safety information. The acceptance of FAA AC 43 13 1B aligns with the bilateral airworthiness agreement.

Insurance policies. Most aviation insurance policies require compliance with all airworthiness directives. Breach voids cover. The AD’s removal of mandatory replacement at 15 years may affect underwriting risk assessments, but the insurer may impose conditions requiring adherence to the manufacturer’s ICA.

This AD, AD/BEECH 50/34 Amdt 1, is an amendment to an original AD issued with the same number but without the “Amdt 1” suffix. The original AD became effective on 16 January 2012. The amendment was signed on 23 February 2012 by Peter Boyd, Delegate of CASA, and became effective on 27 February 2012.

The amendment makes three specific changes:

1. Addition of Figure 1 to the applicability section. Figure 1 is adapted from the Beechcraft Illustrated Parts Catalogue and depicts the forward elevator control cable configuration that triggers the AD. The background explains this was added to assist registered operators in determining whether the AD applies to their aircraft. Prior to the amendment, the applicability simply referred to “all Beechcraft 50 series (Twin Bonanza) aeroplanes fitted with forward elevator control cable configuration” without a diagram. This broad wording could have captured aircraft with different cable routings that did not pose the same risk. The amendment narrows the applicability by providing a visual reference.

2. Removal of mandatory age based replacement. The original AD required replacement of any forward elevator cable that exceeded 15 years in service. The amendment removes that requirement entirely. The background states that the removal follows the publication of Instructions for Continuing Airworthiness (ICA) by the manufacturer. CASA considers those ICA satisfactory to ensure the failure does not occur, provided the ICA is adhered to during inspection.

3. Removal of repeat inspection requirements. The original AD mandated repeat inspections of the entire elevator control system at specified intervals. The amendment removes those repeat inspection requirements. Again, the justification is the existence of the manufacturer’s ICA.

The amendment does not change the core requirement to inspect or replace the forward elevator cable, nor the duties to remove defective cables and prohibit reinstallation. All compliance deadlines remain the same for aircraft that had not previously complied.

The original AD was triggered by a specific incident: a forward elevator cable failure (separation) immediately before take off. A second aircraft was found with extensive fraying in the same location. After the original AD, CASA received reports of five more unserviceable cables. The removal of the age and repeat requirements therefore represents a deliberate risk assessment by CASA that ongoing inspection under the manufacturer’s ICA is adequate, even for cables that might be older than 15 years.

This amendment history shows a regulatory evolution from a prescriptive, blanket rule (inspect all, replace at 15 years, repeat) toward a more targeted approach (narrow applicability, rely on manufacturer ICA). The original AD was a rapid response; the amendment is a refinement after more data and after the manufacturer updated its guidance.

The text of this AD contains no references to any litigation. No court or tribunal case is cited. This is typical for a routine airworthiness directive issued by CASA. Airworthiness directives are legislative instruments made under delegated authority and are rarely challenged in court because they apply to a small population of aircraft and require immediate safety compliance, leaving little time for legal contest. Operators who disagree with an AD may request a variation or exemption from CASA under section 20 of the Civil Aviation Act, but that is an administrative process, not litigation.

There is no public record of an appeal against this specific AD. The original AD and the amendment were issued by a delegate of CASA, which is a lawful exercise of power. Any legal challenge would likely argue that the AD is beyond power or procedurally invalid, but no such challenge is recorded.

The background tells us that five more unserviceable cables were found after the original AD, which suggests operators were complying and reporting, not challenging.

The amendment actually reduced compliance burden (removing age replacement and repeat inspections), which would have been welcomed by operators and likely reduced any incentive to litigate.

If litigation were to arise in the future, it could involve an operator who disagrees with a finding that their aircraft meets the Figure 1 configuration, or an operator who disputes that a cable was defective. But that would be factual disagreement rather than challenge to the AD’s validity.

In summary, this section is necessarily brief due to the absence of any litigation history recorded in or associated with the document. The AD is a non controversial technical instrument that has operated without judicial scrutiny.

1. Applicability depends on Figure 1, not just aircraft model. The AD does not apply to all Beechcraft 50 series aircraft. It applies only to those “fitted with forward elevator control cable configuration as detailed in figure 1”. If the operator cannot locate Figure 1 or does not know the cable routing on their aircraft, they may incorrectly assume compliance or non compliance. The AD does not provide a means to obtain Figure 1 other than noting it is “adapted from Beechcraft Illustrated Parts Catalogue”. An operator may need to purchase the IPC or contact Textron Aviation.

2. Credit for prior compliance is limited. Aircraft that complied with the original AD by inspecting or replacing the cable are deemed compliant with Requirement 1 of this amendment. But that credit does not extend to Requirements 2 or 3. If on a later check the cable is found defective, Requirement 2 still applies immediately. Also, the credit applies only to Requirement 1, not to future duties under the manufacturer’s ICA. An operator who relies on prior compliance and does not follow ICA could later be found non compliant.

3. The positioning flight is severely restricted. Only one flight is allowed, and only with the pilot on board. If the inspection cannot be performed at the destination either, the aircraft is effectively grounded again. The flight cannot be used to reposition for commercial purposes or to carry passengers.

4. Prohibition on reinstallation applies to all parts, not just whole cables. Requirement 3 says “a cable assembly or parts thereof”. Even a small component like a swage terminal or a pulley that was part of a removed cable must not be installed. This is often missed in practice.

5. No explicit ongoing duty to inspect. The AD removes repeat inspections, but the background says the manufacturer’s ICA are considered satisfactory. The operator may assume no further action is needed, but the ICA likely require periodic inspections. The AD does not state how often; it is left to the ICA. If the operator fails to follow ICA, they may be safe from AD enforcement but could be vulnerable under general airworthiness regulations.

6. Figure 1 may be ambiguous. The AD reproduces an image in the original but in this text it is shown as “”. The operator must obtain the actual image from the official CASA publication. A misinterpretation of the drawing could lead to wrong applicability determination.

7. The compliance deadline for Requirement 1 has already passed. For any aircraft that has not yet complied and is being operated, they are already in breach. The AD says for those aircraft not previously inspected/replaced within the last maintenance release period, compliance is “before further flight after the 16 January 2012”. That date is long gone. New owners or operators of an aircraft that has sat idle since 2012 may mistakenly think the AD no longer applies because it’s old. But the requirement continues; the aircraft must be inspected before further flight.

8. Requirement 3 applies to all aircraft, not just the one from which the cable was removed. The words “any aircraft” mean you cannot sell a removed cable for use on a different type, even if that type is not a Beechcraft 50. This is an absolute bar.

9. The acceptable means of compliance reference may be outdated. The AD cites FAA AC 43 13 1B, which has been superseded by later versions (e.g., 1C or 2). Using a later version may be reasonable, but the AD does not approve it. An inspector could argue that the operator must use the exact version referenced. The Beechcraft maintenance data reference is also revision specific in practice.

10. The amendment removed the 15 year rule but did not grandfather inspections done under that rule. If an operator replaced a cable at age 14 years purely to comply with the original AD’s age requirement, they have spent money unnecessarily. The amendment does not provide reimbursement or any relief.

Compliance with AD/BEECH 50/34 Amdt 1 requires a systematic approach. The steps are as follows:

Step 1: Determine applicability. Obtain an official copy of the AD from CASA’s website or a service provider. Locate Figure 1, which is adapted from the Beechcraft Illustrated Parts Catalogue. Physically inspect the forward elevator cable routing on the aircraft. Compare the routing to Figure 1. If the cable configuration matches, the AD applies. If it does not match, the AD does not apply, but note that the cable should still be maintained per the aircraft maintenance manual. Document the determination in the aircraft records.

Step 2: Check prior compliance. Review the aircraft maintenance release and logbook. If the forward elevator cable was inspected or replaced in accordance with the original AD (before 16 January 2012) or in accordance with this amendment after that date, record that fact. If prior compliance is confirmed, no further action is required under Requirement 1. However, ensure that the cable is not defective now - if any defect is discovered during subsequent operations, Requirement 2 applies.

Step 3: Perform inspection or replacement (if not already compliant). If the aircraft has not been inspected or replaced since the original AD, before further flight you must either:

• (a) Inspect the forward elevator cable assembly for wear, broken wires and corrosion using FAA AC 43 13 1B, Chapter 7, Section 8, paragraph 7 149(d) or Beechcraft maintenance data; or
• (b) Replace the cable assembly with a new serviceable part.

If the aircraft is located where inspection cannot be performed, you may conduct one positioning flight with only the pilot on board to a place where inspection can be done. After that flight, inspection must occur before further flight. Do not use the positioning flight for any other purpose.

Step 4: Deal with defective cables. If inspection reveals wear, broken wires, or corrosion that exceeds limits per the accepted data, the cable is defective. Remove it from service before further flight. Replace it with a new or serviceable part that meets the type design.

Step 5: Observe the prohibition on reinstallation. Any cable or part removed under Requirement 2 must not be installed on any aircraft. Scrap it or return it to the manufacturer. Do not sell it as a used part, even for non critical applications. Ensure that maintenance personnel and part suppliers are aware of this rule.

Step 6: Follow the manufacturer’s ICA. Although the AD no longer mandates repeat inspections at specific intervals, the manufacturer’s Instructions for Continuing Airworthiness should be obtained from Textron Aviation. Follow the inspection intervals and procedures specified. This is not strictly a requirement of the AD, but is necessary to maintain an airworthy condition and to avoid regulatory action under general airworthiness regulations.

Step 7: Certify and record. After the inspection or replacement, have a licenced aircraft maintenance engineer (LAME) with appropriate type rating certify the work in the maintenance release and the aircraft logbook. Include the AD number, the compliance method (inspect with reference to FAA AC or Beechcraft data, or replace), the results, and any parts removed. Retain records for the life of the aircraft.

Step 8: Monitor for future amendments. CASA may issue further amendments if manufacturer ICA change or if new incidents occur. Subscribe to CASA’s airworthiness bulletin service or use a commercial tracking service.

Cost and time considerations. The inspection is a visual or dye penetrant check of the cable, typically taking one to two hours for a qualified engineer. Replacement cost includes part price (cable assembly) plus labour. The removal of the 15 year replacement saves significant cost for older aircraft. The main burden is the initial compliance verification and the ongoing record keeping.

Common pitfalls. Forgetting to check Figure 1; assuming all Twin Bonanzas are affected; not recording the compliance before further flight; using the positioning flight for multiple trips; allowing passengers on the positioning flight; reusing a removed cable on a different aircraft; failing to follow ICA after the AD inspection.

When in doubt, contact CASA. The AD does not provide a contact, but the regional airworthiness office can clarify applicability or grant an extension if circumstances prevent compliance.