CH-54A and CH-54B aircraft : preventive maintenance daily.

"10 July 1984."

UH-1C/M aircraft : preventive maintenance, daily inspection checklist.

"14 March 1980"--P. [1].

CH-47B and CH-47C helicopters : preventive maintenance daily inspection checklist.

"17 August 1982"--P. 1.

OH-58A/C helicopters : preventive maintenance daily inspection checklist.

"8 August 1980."

OH-6A helicopter : preventive maintenance services.

"8 August 1983."

UH-1M aircraft : preventive maintenance, daily inspection checklist.

"18 July 1988"--Change no. 1.

OH-6A helicopter : preventive maintenance services.

"8 August 1983."

Organizational preventive maintenance : turret for combat engineer vehicle, M728 (2350-00-795-1797).

"15 September 1980."

AH-1G/S and TH-1G helicopter : preventive maintenance daily.

"14 October 1980."

Preventive maintenance services : periodic inspection checklist : UH-60A and EH-60A helicopters.

"12 April 1988."

UH-1H/V and EH-1H/X aircraft : preventive maintenance daily inspection checklist.

"11 January 1983."

Warranty and discrete preventive maintenance

Preventive maintenance actions over the warranty period have an impact on the warranty servicing cost to the manufacturer and the cost to the buyer of fixing failures over the life of the product after the warranty expires. However, preventive maintenance costs money and is worthwhile only when these costs exceed the reduction in other costs. The paper deals with a model to determine when preventive maintenance actions (which rejuvenate the unit) carried out at discrete time instants over the warranty period are worthwhile. The cost of preventive maintenance is borne by the buyer. (C) 2003 Elsevier Ltd. All rights reserved.

Optimal periodic preventive maintenance policy for leased equipment

For leased equipment the lessor incurs penalty costs for failures occurring over the lease period and for not rectifying such failures within a specified time limit. Through preventive maintenance actions the penalty costs can be reduced but this is achieved at the expense of increased maintenance costs. The paper looks at a periodic preventive maintenance policy which achieves a tradeoff between the penalty and maintenance costs. (c) 2005 Elsevier Ltd. All rights reserved.

Optimal preventive maintenance of leased equipment with corrective minimal repairs

For leased equipment, the lessor carries out the maintenance of the equipment. Usually, the contract of lease specifies the penalty for equipment failures and for repairs not being carried out within specified time limits. This implies that optimal preventive maintenance policies must take these penalty costs into account and properly traded against the cost of preventive maintenance actions. The costs associated with failures are high as unplanned corrective maintenance actions are costly and the resulting penalties due to lease contract terms being violated. The paper develops a model to determine the optimal parameters of a preventive maintenance policy that takes into account all these costs to minimize the total expected cost to the lessor for new item lease. The parameters of the policy are (i) the number of preventive maintenance actions to be carried out over the lease period, (ii) the time instants for such actions, and (iii) the level of action. (c) 2005 Elsevier B.V. All rights reserved.

Application of reliability-centred maintenance technology on electric trains

This paper demonstrates the application of the reliability-centred maintenance (RCM) process to analyse and develop preventive maintenance tasks for electric multiple units (EMU) in the East Rail of the Kowloon-Canton Railway Corporation (KCRC). Two systems, the 25 kV electrical power supply and the air-conditioning system of the EMU, have been chosen for the study. RCM approach on the two systems is delineated step by step in the paper. This study confirms the feasibility and effectiveness of RCM applications on the maintenance of electric trains.