Insights On Aircraft Programmed Depot Maintenance An Analysis Of F 15 Pdm

Author : Edward Geoffrey Keating
Publisher : Technical Report (RAND)
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.67/5 ( download)

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Download or read book Insights on Aircraft Programmed Depot Maintenance written by Edward Geoffrey Keating and published by Technical Report (RAND). This book was released on 2008 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical report describes the F-15 programmed depot maintenance (PDM) process as performed at the Warner Robins Air Logistics Center (WR-ALC) in FYs 2004-2006. The average WR-ALC F-15 PDM visit runs behind schedule and lasts about four months. Also, PDM can wait a long time for parts; aircraft move through PDM steps out of sequence, with missing parts catching up with the aircraft when they become available, or cannibalize other aircraft.

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.03/5 ( download)

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Download or read book Insights on Aircraft Programmed Depot Maintenance: An Analysis of F-15 PDM. written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical report describes the F-15 programmed depot maintenance (PDM) process as it was performed at the Warner Robins Air Logistics Center (WR-ALC) in the FY 2004 through FY 2006 time frame. The F-15 is an all-weather, extremely maneuverable tactical fighter designed to permit the Air Force to gain and maintain superiority in aerial combat. F-15s are on a 6-year PDM cycle (i.e., they are to return for PDM within 6 years of completion of a visit). WR-ALC has a sequential process that F-15s follow when undergoing PDM. Fuselage and wing work are, however, performed in parallel. The mean WR-ALC F-15 PDM visit completed in FY 2006 lasted 119.8 days. This total was down from 130.3 days in FY 2005 but similar to FY 2003 (123.1 days) and FY 2004 (117.5 days) mean durations. In FYs 2002 and 2003, the vast majority of WR-ALC F-15s completed PDM behind schedule. This problem was reduced in recent years, largely because planned durations became more realistic (i.e., longer). In FY 2006, the median F-15 was picked up 8 days after WR-ALC completed work. Pickup lags for F-15s based overseas are expected, because they are typically flown overseas in pairs to make more efficient use of aerial tanker refueling. However, even for continental United States (CONUS) based aircraft, it was not uncommon for operators to wait a week or more to retrieve their completed F-15s. There is considerable variation in how much time aircraft spend at specific steps or cells in the F-15 PDM process. WR-ALC is concerned about part issues. The PDM line does not have a particularly high priority, so it can wait considerable periods for parts. One symptom of and adaptation to part problems is "traveling work" (i.e., having an aircraft move forward through WR-ALC's cellular flow without all the tasks prescribed in a cell being completed). When the missing part is obtained, the part catches up with the aircraft and is installed. Another symptom of and adaptation to part problems is cannibalization.

Author : Edward Geoffrey Keating
Publisher : Rand Corporation
ISBN 13 : 0833039687
Total Pages : 68 pages
Book Rating : 4.82/5 ( download)

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Download or read book Valuing Programmed Depot Maintenance Speed written by Edward Geoffrey Keating and published by Rand Corporation. This book was released on 2006 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of a larger RAND Project Air Force study on capability-based programming, this report introduces a revealed preference methodology to estimate the value to the United States Air Force of expediting F-15 fighter jet programmed depot maintenance (PDM). Such a valuation estimate would be useful in depot-level cost-benefit analysis. The authors rely on the fact that the Air Force has chosen to pay for intermittent PDM on F-15s to assert that F-15s must have enough value after PDM visits to justify PDM costs. Air Force expenditure data suggest that a typical fiscal year 2005 PDM visit cost about $3.2 million. Using the aircraft valuation curves consistent with PDM being worthwhile, the authors find that expediting an F-15's last PDM visit by a month must be worth at least $60,000. However, using a plausible annual aircraft valuation decline rate, they find that expediting an old F-15's last PDM visit by a month would be worth around $75,000, while expediting a new F-15's first PDM visit by a month would be worth more than $180,000. This report also explores various robustness enhancements. Consideration of aging aircraft issues, for instance, tends to increase the estimated value of expedited PDM.

Author : Elvira N. Loredo
Publisher : Rand Corporation
ISBN 13 : 0833040154
Total Pages : 135 pages
Book Rating : 4.52/5 ( download)

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Download or read book Programmed Depot Maintenance Capacity Assessment Tool written by Elvira N. Loredo and published by Rand Corporation. This book was released on 2007 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes a model for evaluating the combined capacity of organic (U.S. Air Force owned and operated) and contractor maintenance assets to meet aircraft programmed depot maintenance (PDM) workloads. The PDM Capacity Assessment Tool (PDMCAT) forecasts the average number of aircraft that will be in PDM status each year over several decades, based on the initial number of aircraft in PDM status, the physical capacity of the facility or facilities (number of docks available for conducting PDM work), the PDM induction policy (the period allowed between the completion of one PDM and the start of the next), and the minimum hands-on flow time (the minimum time it would take a facility to complete a PDM if only one aircraft were in PDM status). While not directly part of the model, the derived induction data can be used to estimate both near- and long-term obligation authority requirements for different induction policies, labor rates, and workload forecasts. To illustrate the model's operations and capabilities, we applied the model to evaluate the U.S. Air Force's current capacity for supporting KC-135 PDM and examined several options for improving both near- and long-term availability. In the process, we discovered that, while future annual fleet costs increase and availability decreases with age and workload, they do so rather less rapidly because the aircraft induction rates (the number of aircraft inducted each year) decrease as the PDM flow time increases. This leads to a less-drastic cost and availability forecast than usual.

Author : Informa Healthcare
Publisher : CRC Press
ISBN 13 : 1482298538
Total Pages : 1980 pages
Book Rating : 4.36/5 ( download)

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Download or read book International Encyclopedia of Ergonomics and Human Factors - 3 Volume Set written by Informa Healthcare and published by CRC Press. This book was released on 2000-12-14 with total page 1980 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first encyclopedia in the field, the International Encyclopedia of Ergonomics and Human Factors provides a comprehensive and authoritative compendium of current knowledge on ergonomics and human factors. It gives specific information on concepts and tools unique to ergonomics. About 500 entries, published in three volumes and on CD-ROM, are pre

Author :
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.23/5 ( download)

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Download or read book Air Force Journal of Logistics written by and published by . This book was released on 1994 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Major Usaf John a Daniels
Publisher : CreateSpace
ISBN 13 : 9781479199693
Total Pages : 36 pages
Book Rating : 4.99/5 ( download)

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Download or read book C-130 Programmed Depot Maintenance written by Major Usaf John a Daniels and published by CreateSpace. This book was released on 2012-08-26 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current USAF process for establishing C-130 PDM intervals does not account for the wide range of aircraft variables within each aircraft MDS. This paper develops an analytical model that C-130 maintainers can use to forecast when a C-130 aircraft requires PDM. The model is based on five unique aircraft variables: 1) aircraft age, 2) total flying hours, 3) average yearly flying hours, 4) mission profile (expressed as a severity factors), and 5) operating location of the aircraft. Interviews with C-130 SPO personnel, combined with the use of the C-130 Service Life Data Base, provided the required data for developing the C-130 PDM interval model. The C-130 PDM interval model developed in this paper allows maintainers and operators to predict the optimum time between C-130 PDM activities. It eliminates the requirement to base PDM intervals on aircraft MDS. As a result, there is a potential for significant savings by deferring PDM for a portion of the C-130 fleet. Finally, the PDM interval model developed in this paper may be applicable for other Department of Defense aircraft for which MDS is used is the determinant of PDM intervals.

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ISBN 13 :
Total Pages : pages
Book Rating : 4.39/5 ( download)

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Download or read book C-130 Programmed Depot Maintenance written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309174473
Total Pages : 124 pages
Book Rating : 4.73/5 ( download)

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Download or read book Aging of U.S. Air Force Aircraft written by National Research Council and published by National Academies Press. This book was released on 1997-09-30 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the aircraft that form the backbone of the U.S. Air Force operational fleet are 25 years old or older. A few of these will be replaced with new aircraft, but many are expected to remain in service an additional 25 years or more. This book provides a strategy to address the technical needs and priorities associated with the Air Force's aging airframe structures. It includes a detailed summary of the structural status of the aging force, identification of key technical issues, recommendations for near-term engineering and management actions, and prioritized near-term and long-term research recommendations.

Author :
Publisher :
ISBN 13 :
Total Pages : 834 pages
Book Rating : 4.26/5 ( download)

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Download or read book American Book Publishing Record written by and published by . This book was released on 2006 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt: