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BEFORE commencing an inspection obtain the pilot's report on the previous flight. In the course of the following inspections, as with all inspections, components which are found to be damaged or defective must be repaired, if possible, or replaced. However, before repairing a component, the relevant repair instructions must be consulted. Unless otherwise stated, these inspections are carried out every 40 hours.

SERVICING plays no small part in the successful operation of an aircraft, since, apart from reliable running, an aircraft which is easily maintained offers a considerable saving in time, labour and cost. In the design of the Aerovan, particular attention has been given to the servicing aspect which is outlined in the following notes.

SOME literature on the subject of jet‐propulsion power units for aircraft is now available. These have, however, in the main, been primarily concerned with the description and performance of these units. Little, if anything, of the serviceing and serviceing requirements of the gas turbine has been written.

SERVICING, at specified intervals, is essential to the safe and reliable running of all mechanical devices. This is, perhaps, even more important in the case of the jet engine than with other mechanisms. With this object in view, the following paragraphs outline the servicing requirements of the Derwent jet propulsion power unit.

THIS article is an attempt to explain the way in which the actual servicing schedules now used by the Royal Air Force are evolved and also to give an outline of the organization necessary for this work. The whole field of R.A.F. planned flying and planned maintenance has already been very effectively covered by S/Ldr Harrop's paper and this present article contains a more detailed account of some of the practical problems involved in the one aspect of the production of schedules.

The purpose of this paper is to efficiently assist the decision makers in evaluating and selecting the most appropriate third-party logistics (3PL) provider from environmental sustainability perspective using a two-phase model based on data envelopment analysis (DEA) and analytic network process (ANP).

The study uses an integrated approach of DEA and ANP as an evaluation and selection methodology to select an efficient and requisite 3PL. The integrated model is a sound technique for 3PL evaluation and selection. DEA effectively screens the maximally efficient 3PLs, whereas ANP easily performs the cumbersome process of weighting diverse criteria and ranks various alternatives according to their performance on the basis of these criteria. This study lists the prominent evaluation and selection criteria taking into consideration the environmental sustainability. Finally, a real-life industrial application is presented to demonstrate the proposed method.

The current research work is devoted to the emerging research topic of environmental sustainability in logistics industry and supply chain management. The results of study indicate that eco-efficient transportation and 3PLs lead better transportation planning, better inventory and warehouse management, lower inventory cost and sustainable supply chain operations. Also, the applied approach enables the decision makers to better understand the complex relationships of the relevant criteria in the decision-making process.

This study does not investigate the relationships between environmental performances and differentiation advantage from the perspective of 3PLs. Also, sensitivity analysis is not performed.

The developed integrated model enables decision analysts to better understand the complete evaluation process of 3PL evaluation and selection considering environmental sustainability perspective. Furthermore, the developed approach provides a more flexible, simple, accurate, effective, and systematic decision support tool for 3PL evaluation and selection.

The current study is first of its kind to use the integrated approach in evaluation and selection of 3PLs from environmental sustainability perspective considering the inter-dependencies among the evaluation and selection criteria.

The purpose of this paper is to examine the effects of political connections surrounding an exogenous Supreme Court decision (Citizens United) that lifted long-standing restrictions on corporate political contributions.

This study examines key characteristics of politically connected firms compared to non-politically connected firms, including their market reaction to Citizens United, as well as cash holdings levels and governance characteristics before vs after the landmark decision.

The results indicate a significant negative market reaction to politically connected firms surrounding the announcement of Citizens United. Additionally, there is a significant increase in the cash holdings of politically connected firms relative to before the event and relative to non-politically connected firms. For politically connected firms, this result is exacerbated by poor corporate governance quality. Collectively, these findings are consistent with a positive association between agency costs and political connections.

This study provides novel evidence by exploiting an exogenous enhancement in the implications of political connections that accompanied the Citizens United decision. The use of this quasi-natural experiment offers an ideal research setting to extract fresh insights into the effects of corporate political connections.