Is the aircraft leasing industry on the way to a perfect storm? Finding answers through a literature review and a discussion of challenges
Bibliographic record
Abstract
Since the emergence of the first private aircraft leasing companies in the 1970’s, the airline industry has undergone tremendous changes. Supported by several decades of growing demands and rising world economies, the share of leased aircraft across airlines worldwide has grown steadily, exceeding 50% for the first time during the peak of the COVID-19 pandemic. Given that earlier research has quantified the optimal lease rate for an airline between 40% and 60%, the industry might be facing challenges soon — potentially counteracting the recent recovery from COVID-19. This study reviews the existing research on aircraft leasing; a subject which has been rather scattered in the literature for the past few decades. We summarize more than 70 scientific papers published on aircraft leasing and closely related subjects. Based on the dissection and categorization of existing studies, we derive a set of important challenges for the aircraft leasing industry, which should be addressed by the community.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.012 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.007 | 0.011 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.004 | 0.006 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".