Within aircraft leasing, the importance of having a good awareness of maintenance plans is a paramount concern. The AMP or aircraft maintenance program is a list of tasks and requirements of what must be done to the aircraft and when. It is derived of many sources which all detail intervals or thresholds for these tasks, an example of the sources for the maintenance program includes the maintenance planning data which is from the aircraft manufacturer along with many others such as airworthiness directives and also service bulletins and repairs carried out or modifications also.
The considerations for an aircraft reliability program and interrogation considerations can be initially daunting in the concept as to how we control the data, what we choose and how we determine its value.
There are regulations that require the reliability program for an aircraft and within the document there is also guidance. If we consider a EASA document there is a couple of bits to be aware of initially, it can be easy to skip the introduction in the regulation and go directly to the regulation itself.
While the aircraft is leased the lessor wants to maintain the value of the asset and in doing so wants to be updated as much as possible as to the aircraft’s condition and status etc. This is of course important, but there could be a level where this management of the asset could become intrusive and costly for a lessee if there was no guidance or conditions for this process.
There are multiple conditions and updates that must be regularly provided to the lessor at all times throughout the lease and to protect the lessee we often refer to a term called “Quiet Enjoyment”.This is basically the right of a lessee to operate the aircraft without intrusive and costly requirements from the lessor for in-depth records reviews.
When we mention aircraft reliability, we open up a lot of different topics all at once; ultimately though we get out what we put in as with many systems such as safety management also.
It is important to know the difference between data and information –information can be created from data. Data on its own can be meaningless or hard to interpret, the data is just facts and details for example that we must analyse.
The reliability programme is only going to be as good as you make it by determining the needs and objectives you want to achieve.