Asset transition has always been time- and effort-intensive. In this context, the redelivery process deserves specific attention. With standard lease terms of 6–10+ years and the increasing prevalence of longer leases and extensions, the volume of records that must be reconciled before redelivery continues to grow.

As a result, redelivery preparation begins well in advance of the contractual return date. This typically includes records review and build-up, aligning aircraft status with pre-agreed lease conditions, and closing historical gaps. Even with early preparation, many redelivery events still uncover additional findings, which can extend the transition timeline and lead to further costs or contractual penalties.

3 Common Records Findings during Asset Transition

With that, listen up operators or even fellow consultants and asset management, here are some of the common findings we’ve seen during managing redeliveries

• Utilization Recording Discrepancies

Missing or uncorrected utilization entries significantly compromise the historical integrity of an aircraft’s technical records. In practice, this often manifests as discrepancies in TSN and CSN, as well as TSO and CSO.

Whether caused by human error, incomplete data capture, or gaps in reporting, the implications are serious. These values form the basis of maintenance planning calculations and are critical for life-limited part tracking. Any inaccuracy introduces the risk of components being operated beyond their approved airworthiness limits.

• Incomplete Documentation from Shop Visits, Removals, Installations, and Preservation

Another recurring issue is incomplete documentation following shop visits. In many cases, packages contain only AD/SB status sheets and basic configuration records, while essential documents such as DFPs and ARCs are missing. These documents are necessary to confirm the scope of work performed and the parts installed.

The same documentation standard applies to engine removals and installations as assets move between aircraft or operators, as well as during preservation periods. This is especially critical for extended AOG conditions, where specific preservation tasks must be performed and recorded. Missing documentation creates traceability gaps and frequently delays acceptance during asset transition or induction into a maintenance program.

• Configuration Deviations and Deferred Tasks

Beyond the above, operational variations introduced during service must also be captured accurately, particularly during redelivery. For engines, this commonly includes thrust rating configurations. Airlines may elect to derate or uprate engines based on operational requirements, but incomplete or missing thrust rating statements compromise documentation accuracy. Where recorded thrust levels do not align with the certified rating, remaining life and performance-related calculations can be distorted.

Deferred maintenance is another critical area. Outstanding items may be documented through OEM-approved concessions (such as CDRs, TVs, or OTCs) or consolidated into a deferred maintenance list covering pending repairs, deviations, or open findings carried forward from the previous operator or last shop visit.

When these records are missing or incomplete, lessors and incoming lessees are unable to clearly assess open obligations. This creates uncertainty around maintenance responsibility, cost exposure, and technical risk.