Maintenance Plan Transitions During a Lease

An aircraft lease can be a complex event when dealing with the multiple tasks and considerations regarding the return conditions as defined in a lease agreement.

The task’s associated with reviewing those conditions against the aircraft and its associated records protect the value of the asset and also ensure a known standard for the next transition.

Depending on your role in a transition you might well find that you will be involved also in a “bridging check”.

An aircraft can only operate under one Aircraft Maintenance Plan(AMP); so typically, different operators, or even a lessor receiving an aircraft will have different requirements to the AMP which is currently in use.

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Lease Conditions and Maintenance Considerations

When an aircraft is returned at the end of a lease period the aircraft’s maintenance plan will have evolved from that at the time when the aircraft lease began, which is normal, as for example the Maintenance Planning Data (MPD) changes and so the AMP (Aircraft Maintenance Programme) evolves in line.

It is also possible based on an operator’s requirements that task intervals will change (increase or decrease); typically, this might be based on reliability or the specific operating environment – additionally there might be local regulation requirements that apply.

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Technical Specifications

Throughout the aircraft’s lease life-cycle the lessor will carry out due diligence on their asset at a frequency agreed in the Aircraft Lease Agreement, this due diligence is commonly referred to as the “Mid-Lease” or “Mid-Term” Inspection.
Lessors will typically contract this work to a service provider and their consultant will perform the physical inspection and technical records sample review . The data collected will form a report that in turn will be used to update the Technical Specifications on the lessors IT system.

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EEL – Emergency Equipment List

The emergency equipment list or EEL is an important document onboard an aircraft during service, but also very important during a lease transition or review.

The EEL will typically contain a graphical location of emergency equipment on board the aircraft along with a description and part number associated with each item accordingly. The part numbers may be on a separate sheet associated with the pictorial representation.

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Aircraft Status List

On a normal aircraft redelivery or at an early lease termination the importance of receiving a certified status list from the airline CAMO or Quality Assurance department ( for non EASA) is critically important when performing the technical records review. The certified and dated list is the benchmark or “hard point” DATE that allows the reviewer record the Open Item List (OIL) findings and build the records folders with the compliant documents.

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