Mid Lease Inspection – Landing Gear Documentation & Records

During the review of the mid-lease inspection, there is a focus on the landing gear. These are a high-cost part of the aircraft and the impact of an overhaul is both a large consideration regarding the time frame and cost.

The landing gear cannot be overhauled “on wing” which means it must be removed to overhaul each landing gear and often it must be sent off-site to a specialist facility. The facility will then replace and overhaul the gear as required, the time frame for this can be several weeks and often we do not wait for the landing gear to be returned. Another replacement gear is commonly installed in this case to reduce the time on the ground for an aircraft.

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Aircraft Lease Transitions –Most common repeat findings

During a transition of an aircraft the aircraft technical records that detail all the maintenance for the aircraft is reviewed along with the supporting documentation and the status of the aircraft/components.

So,this week we are looking for your views on what the most common aircraft technical records issues that are found at Redelivery on an end-of-lease review.

From our experience, we have observed the following areas to be common and repeat findings that can have significant time and cost implications. They are in most case findings that while possibly not able to rectify in advance you can be aware of them and plan the response in advance.

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Mid-Lease Inspection –Technical Records Audit

The configuration of the aircraft can change significantly depending on the operation. For example, you might have a full freighter or a full-passenger aircraft.

It means as part of the mid-lease inspection that we must collect some general documents that relate to specific configurations regarding the fleet we operate.

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Aircraft Engine Lease Return – Conditions associated with engine lease hand back

Aircraft Engine Lease Return – Conditions associated with engine lease hand back

The engine is a high-cost asset and the value of the asset is directly related to the condition of the engine both regards to the component’s remaining life, but also to the condition and implications of the condition – for example, a compressor blade damaged by an impact might require action within a certain time frame and this, in turn, could require a visit to an overhaul shop.

If on the wing then after satisfactory completion of the demonstration flight the full video borescope inspection of all accessible gas path sections of each Engine (accessible whether by borescope port or other means), including the low-pressure compressor, high-pressure compressor, combustion chamber, high-pressure turbine, and the low-pressure turbine area would be carried out.

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Mid-Lease Inspection – Technical Records Audit 

The mid lease inspection is a topic that we have considered in a couple of posts prior to this and we continue to look at how we break down the requirements and what we might look at.

A large part of the aircraft lease agreement will, of course, be focussed on aircraft maintenance; it is important to know that during operation the aircraft will operate with a maintenance plan based on the current environment, utilisation and include influences such as the airline reliability programme.

This means that the maintenance plan currently being used might have adjusted intervals for some tasks or additional tasks for example – during operation, this is normal and not a concern. Additionally, there may be some repetitive tasks and items with limited life being carried too heavy maintenance inputs also – again these are not an issue as long as they are controlled during operation.

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