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GAO-11-274R: 

United States Government Accountability Office: 
Washington, DC 20548: 

February 11, 2011: 

The Honorable Kay Bailey Hutchison:
United States Senate: 

Subject: Depot Maintenance: Air Force Is Assessing Engine Maintenance 
Options for Work Currently Performed at Kelly Aviation Center: 

Dear Senator Hutchison: 

This report responds to questions that you raised about Air Force 
engine maintenance and repair work currently performed at Kelly 
Aviation Center (KAC) and the potential transfer of that work to 
another location. In 1999, Oklahoma City Air Logistics Center (OC-ALC) 
awarded a contract to KAC to perform work, including depot-level 
maintenance, repair, and overhaul on TF39 engines, which are typically 
used for C-5 Galaxy aircraft; T56 engines, which are typically used 
for C-130 aircraft; and fuel accessories on these engines. The Air 
Force estimates the total expenditure under the contract for this work 
to be $3.7 billion from February 16, 1999, through December 1, 2010. 
The contract is not to exceed 15 years (the contract had an initial 7-
year ordering period that could be extended to 15 years or reduced to 
5 years based on performance), and will expire not later than February 
15, 2014. The Air Force will need to determine how to conduct the 
engine maintenance work after the term of the contract ends. 

You requested that we review the potential transfer of the engine 
maintenance and repair workload from KAC. Our objectives were to 
determine (1) the extent to which the Air Force has identified the 
costs and benefits of possibly moving engine maintenance for selected 
aircraft from KAC and (2) the steps the Air Force has taken and plans 
to take to mitigate any potential aircraft readiness risks that might 
occur if the work is moved. 

To conduct this work, we reviewed related laws, policies, and other 
guidance for selecting maintenance depot sources of repair, conducting 
cost-benefit analyses, and mitigating risk. We also reviewed documents 
(including the current KAC contract, workload-related information, and 
other memorandums) and identified the factors (including depot 
workload, maintenance facility capacity, costs, and benefits) to be 
considered and the processes to be used in determining best value to 
the government in selecting the depot-level source of repair. We 
compared depot-level source-of-repair and cost-benefit analysis 
criteria to the Air Force's procedures and plans for determining the 
source of repair. In addition, we reviewed the documents and 
information on four examples where the Air Force has experience 
mitigating risk when depot-level maintenance work has been transferred 
from or performed at a single site. We compared risk mitigation 
analysis criteria to the Air Force's efforts to assess risk associated 
with the possible options resulting from the business case analyses. 
For both objectives, we discussed issues with officials from the 
Department of Defense (DOD), Air Force Headquarters, the Air Force 
Materiel Command, OC-ALC, the Defense Contract Management Agency, and 
KAC. 

We conducted this performance audit from May 2010 through February 
2011 in accordance with generally accepted government auditing 
standards. Those standards require that we plan and perform the audit 
to obtain sufficient, appropriate evidence to provide a reasonable 
basis for our findings and conclusions based on our audit objectives. 
We believe that the evidence obtained provides a reasonable basis for 
our findings and conclusions based on our audit objectives. 

In summary, we found that the Air Force is assessing various options 
(DOD depot only, contractor only, or a combination of the two) for 
performing the engine repair after the term of the existing contract 
ends, and is conducting separate cost-benefit analyses for the TF39 
and T56 engine maintenance work. Under Air Force guidance for depot-
level source-of-repair selection, cost is to be considered, although a 
formal costing effort is not always necessary. The Air Force has 
decided to conduct a business case analysis to determine how to best 
accomplish the long-term, depot-level maintenance for these engines. 
Air Force officials estimate that the source-of-repair decision will 
be made by January 2012, but if this decision designates some or all 
of the work to be competitively sourced, the final decision on the 
source of repair could be later because of steps in the competitive 
bidding process. These steps typically include soliciting proposals 
for the work, receiving and evaluating proposals from potential 
providers of the work, and awarding the contract. 

Regarding any potential readiness risks that may result from 
transferring the engine work, we found that the Air Force recognizes 
the importance of risk mitigation planning. However, the Air Force has 
not developed specific risk mitigation plans for the TF39 or T56 
engines because it is still assessing how the work will be performed 
after the term of the contract ends. DOD guidance identifies risk 
assessment as a factor to be considered when assigning maintenance 
work, and Air Force guidance requires that a business case analysis 
include sensitivity and risk analyses. If a decision were made to 
transfer the work, Air Force officials said that the service could 
apply risk mitigation strategies similar to those it has successfully 
used in the past. These strategies have included increasing its shelf 
stock of component parts and identifying in advance other depot and 
commercial facilities capable of performing specific workloads. 

We are not making any recommendations in this report. 

Enclosure I contains briefing slides that provide additional details 
regarding our findings. After reviewing a draft of this report, DOD 
officials said that the department had not comments. 

We are sending copies of this report to the appropriate congressional 
committees; the Secretary of Defense; the Deputy Secretary of Defense; 
the Under Secretary of Defense (Acquisition, Technology and 
Logistics); and the Secretary of the Air Force. The report also is 
available at no charge on the GAO Web site at [hyperlink, 
http://www.gao.gov]. 

Should you or your staff have questions concerning this report, please 
contact me at (202) 512-8246 or edwardsj@gao.gov. Contact points for 
our Offices of Congressional Relations and Public Affairs may be found 
on the last page of this report. Key contributors to this report were 
Carleen Bennett, Assistant Director; Lee Cooper; Jennifer Madison; 
Charles Perdue; and Michael Willems. 

Sincerely yours, 

Signed by: 

Jack E. Edwards:
Director, Defense Capabilities and Management: 

Enclosure - 1: 

[End of section] 

Enclosure I: 

Depot Maintenance: Air Force Is Assessing Engine Maintenance Options 
for Work Currently Performed at Kelly Aviation Center: 

Briefing for the Honorable Kay Bailey Hutchison: 
United States Senate: 

February 11, 2011: 

Contents: 

Introduction; 
Objectives; 
Scope and Methodology; 
Summary of Findings; 
Objective 1: Cost-Benefit Analyses; 
Objective 2: Analyses on Risks to Readiness; 
Agency Comments. 

Introduction: 

As a result of a 1995 Base Realignment and Closure decision, the San 
Antonio Air Logistics Center on Kelly Air Force Base, Texas, including 
the maintenance depot, was closed in 2001. 

* To mitigate the impact of the closing of an Air Force depot on the 
local communities and employees, the administration announced its 
intention to maintain employment levels by privatizing the maintenance 
depot's workload in place. 

* Much of the work that had been performed by the San Antonio Air 
Logistics Center was to be performed by a private contractor at the 
same location. 

The Oklahoma City Air Logistics Center (OC-ALC) entered into a public-
private partnership[Footnote 1] with Lockheed Martin at Kelly Aviation 
Center (KAC), formerly San Antonio Air Logistics Center, to conduct 
work previously performed by a Department of Defense (DOD) maintenance 
depot. 

In 1999, OC-ALC awarded a contract under a previously established 
public-private partnership with KAC to perform work, including depot 
maintenance, repair, and overhaul on: 

* TF39 engines, which are typically used in the C-5 Galaxy (models A 
to C) aircraft; 

* T56 engines, which are typically used in the C-130 (models E and H) 
aircraft; and; 

* fuel accessories on these engines. 

The Air Force estimates the total expenditure under the contract for 
this work to be $3.7 billion from February 16, 1999, through December 
1, 2010. 

The contract is not to exceed 15 years (the contract had an initial 7-
year ordering period that could be extended to 15 years or reduced to 
5 years based on performance), and will expire not later than February 
15, 2014. 

The Air Force will need to determine how to conduct the engine 
maintenance work after the term of the contract ends. 

The former Ranking Member of the Subcommittee on Military 
Construction, Veterans Affairs, and Related Agencies, Senate Committee 
on Appropriations, requested that we analyze the potential transfer of 
engine maintenance and repair workload from KAC. 

Our objectives were to determine the following: 

(1) The extent to which the Air Force has identified the costs and 
benefits of possibly moving engine maintenance for selected aircraft 
from KAC. 

(2) The steps the Air Force has taken and plans to take to mitigate 
any potential aircraft readiness risks that might occur if the work is 
moved. 

Scope and Methodology: 

For both objectives, we: 

* Reviewed related laws, policies, and other guidance available for 
selecting maintenance depot sources of repair, conducting cost-benefit 
analyses, and mitigating risk. 

* Discussed issues with officials from DOD, Air Force Headquarters, 
the Air Force Materiel Command, OC-ALC, the Defense Contract 
Management Agency, and KAC. 

For objective 1, we: 

* Reviewed documents (including the current KAC contract, workload-
related information, and other memorandums). 

* Identified the factors (including depot workload, maintenance 
facility capacity, costs, and benefits) to be considered and the 
processes to be used in determining best value to the government in 
selecting depot-level source of repair. 

* Compared depot-level source-of-repair and cost-benefit analysis 
criteria to the Air Force's procedures and plans for determining the 
source of repair. 

For objective 2, we: 

* Reviewed the previously cited documents and information on four 
examples where the Air Force has experience mitigating risk when depot-
level maintenance work has been transferred from or performed at a 
single site. 

* Compared risk mitigation analysis criteria to the Air Force's 
efforts to assess risk associated with the possible options resulting 
from the business case analyses. 

We conducted this performance audit from May 2010 through February 
2011 in accordance with generally accepted government auditing 
standards. Those standards require that we plan and perform the audit 
to obtain sufficient, appropriate evidence to provide a reasonable 
basis for our findings and conclusions based on our audit objectives. 
We believe that the evidence obtained provides a reasonable basis for 
our findings and conclusions based on our audit objectives. 

Summary of Findings: 

Objective 1: The Air Force is assessing various options (DOD depot 
only, contractor only, or a combination of the two) for performing the 
engine repair after the term of the existing contract ends, and is 
conducting separate cost-benefit analyses for the TF39 and T56 engine 
maintenance work. Under Air Force guidance for depot-level source-of-
repair selection, cost is to be considered, although a formal costing 
effort is not always necessary. The Air Force has decided to conduct a 
business case analysis to determine how to best accomplish the long-
term, depot-level maintenance for these engines. Air Force officials 
estimate that the source-of-repair decision will be made by January 
2012, but if this decision designates some or all of the work to be 
competitively sourced, the final decision on the source of repair 
could be later because of steps in the competitive bidding process. 
These steps typically include soliciting proposals for the work, 
receiving and evaluating proposals from potential providers of the 
work, and awarding the contract. 

Objective 2: The Air Force recognizes the importance of risk 
mitigation planning, but has not developed specific risk mitigation 
plans for the TF39 or T56 engines because it is still assessing how 
the work will be performed after the term of the contract ends. DOD 
guidance identifies risk assessment as a factor to be considered when 
assigning maintenance work, and Air Force guidance requires that a 
business case analysis include sensitivity and risk analyses. Air 
Force officials said that if a decision were made to transfer the 
work, the Air Force could apply risk mitigation strategies similar to 
those it has successfully used in the past. These strategies have 
included-increasing shelf stock of component parts and identifying in 
advance other depot and commercial facilities capable of performing 
specific workloads. 

Objective 1: Cost-Benefit Analyses: 

The Air Force Is Assessing Depot-Level Source-of-Repair Options for 
the TF39 and T56 Engines: 

With up to 4 years left in the current contract, the Air Force began 
the current process to select the depot-level source of repair. The 
process includes steps to identify and assess options for conducting 
depot maintenance on the TF39 and T56 engines once the current 
contract has been completed. 

DOD Instruction 4151.20 prescribes procedures to identify required 
core capabilities for depot maintenance and the associated workloads 
needed to sustain those capabilities. 

* Core refers to a depot maintenance capability that is government 
owned and operated (including government personnel and government-
owned and government-operated equipment and facilities maintained by 
DOD) to ensure a ready and controlled source of technical competence 
and resources necessary for effective and timely response to a 
mobilization, national defense contingencies, or other emergency 
requirements.[Footnote 2] 

* Non-core workload is workload that is not needed to support core 
capability requirements and therefore can be performed by either the 
public or private sector. 

The Air Force took the following actions during the 2009-2010 time 
frame: 

* Designated TF39 and T56 engine maintenance as non-core work and 
tasked OC-ALC to complete a cost-benefit analysis to determine the 
best source to perform the maintenance when the term of the existing 
contract ends not later than February 2014. 

* Determined that the repair work could be done at a DOD depot, by a 
contractor, or by a combination of the two. 

* Began gathering data on costs, workloads, benefits, and other source-
of-repair information for TF39 and T56 engine maintenance. 

Air Force's Guidance for Depot-Level Source-of-Repair Selection Requires
Analyses for Determining Best Value to the Government: 

Air Force criteria allow commands flexibility in conducting analyses 
for determining the best value for the government. 

* Under Air Force guidance[Footnote 3] for depot-level source-of-
repair selection, cost is to be considered, although a formal costing 
effort is not always necessary. The program manager is to determine 
the scope and methodology. 

* Other Air Force guidance[Footnote 4] describes the procedures for 
conducting a business case analysis, including that the analysis: 

- is a decision support document that identifies alternatives and 
presents business, economic, risk, and technical arguments for 
selection and implementation of a given alternative to achieve stated 
objectives; 

- includes a problem statement, cost-benefit analysis, and sensitivity 
and risk analyses, among other items, to make a recommendation for 
maintenance to be performed by a DOD depot, a contractor, or some 
combination of the two (the cost-benefit analysis assigns quantitative 
values to each alternative); and; 

- has an ultimate objective of providing an analysis that effectively 
supports a timely decision-making process. 

In a December 2009 memo, OC-ALC informed the Air Force Materiel 
Command that because of the sensitivities of these maintenance 
efforts, it would conduct a business case analysis to determine how to 
best accomplish the long-term, depot-level maintenance for these 
engines.
Accountability * Integrity t Reliability 

The Air Force Estimate for a Source-of-Repair Decision for the TF39 
and T56 Engines Is January 2012 or Later: 

Once the Air Force's analyses are complete, the results will be 
forwarded to an interservice board for a final decision on the source 
of work (depot, contractor, or a combination). 

* The Air Force estimates that it will provide a recommendation to the 
board by mid-2011. 

* The Air Force said the board could announce its source-of-repair 
decision for the TF39 and T56 engines by January 2012. 

If the board determines that the maintenance efforts are to be 
satisfied using competitive sourcing, a decision on the specific 
provider of work for each engine could be later because of steps in 
the competitive bidding process. These steps typically include 
soliciting proposals for the work, receiving and evaluating proposals 
from potential providers of the work, and awarding the contract. 

Objective 2: Analyses on Risks to Readiness: 

Air Force Has Not Assessed Readiness Risks Because Its Cost-Benefit 
Analyses Are Ongoing: 

The Air Force recognizes the importance of risk mitigation planning, 
but it has not developed specific risk mitigation plans for the TF39 
or T56 engines because it has not determined how the workload will be 
performed after the term of the contract ends. The Air Force may 
follow risk analysis practices that it has successfully used in the 
past. 

* An Air Force Headquarters official told us that the 1995 Base 
Realignment and Closure decisions resulted in accepting the risk of 
conducting depot maintenance at single locations for engine and 
aircraft workloads at KAC, OC-ALC, and other contractor and government 
locations. 

* DOD guidance[Footnote 5] requires that source-of-repair assignments 
for depot-level maintenance workloads shall consider requirements for 
maintenance of identical or similar DOD materiel and combine or 
consolidate similar requirements for maintenance work whenever 
feasible, which Air Force officials said supports single-site engine 
maintenance work. This guidance also requires that the services apply 
a risk mitigation analysis when choosing a source of repair for non-
core depot-level maintenance workloads. 

* The Air Force has requirements to apply risk analysis. Air Force 
Manual 65-510[Footnote 6] requires that a business case analysis 
include sensitivity and risk analyses and notes that it is important 
to: 

- identify and analyze risks to determine which risks present the 
greatest threat to the initiative's successful outcome and: 
-- assess, for each risk, 
-- the likelihood of that risk occurring, 
-- the potential impact on the project, and, 
-- an approach to overcome or lessen the negative consequences should 
the risk occur. 

The Air Force Has Experience Managing Risk: 

The Air Force has experience managing risk when a weapon system's 
maintenance is conducted at a single site. For example, the Air Force 
has the current work for the TF39 and T56 engines at a single 
location--KAC. 

The Air Force also has used other options to mitigate depot-level 
maintenance risk when transitioning work from one source of repair to 
another. For example, Air Force officials: 

* provided information on an interim maintenance contract to prevent a 
gap in mission support until a final source-of-repair decision is made 
for the provider of work and until the new provider builds operational 
capability and; 

* said that in the past the service has increased production of 
certain component parts to ensure that sufficient quantities are 
available on inventory shelves, which can help the Air Force to 
maintain its aircraft readiness rate goals. 

An Air Force Headquarters official said the service also maintains 
knowledge of depot and commercial sites capable of performing 
workloads in case a maintenance facility were to be rendered 
inoperable. 

Agency Comments: 

We provided a draft of this report to DOD for its review and comment. 
Department officials indicated that they had no comments. 

[End of section] 

Footnotes: 

[1] DOD Instruction 4151.21, Public-Private Partnerships for Depot-
Level Maintenance (Apr. 25, 2007), defines public-private partnerships 
tor depot-level maintenance as cooperative arrangements between the 
Department of Defense (DOD) and one or more private-sector entities to 
perform DOD or defense-related work, utilize DOD depot facilities and 
equipment, or both. 

[2] DOD Instruction 4151.20, Depot Maintenance Core Capabilities 
Determination Process (Jan. 5, 2007). 

[3] Air Force Instruction 63-101, Acquisition: Acquisition and 
Sustainment Life Cycle Management (Apr. 17, 2009, Incorporating 
Through Change 3, Oct. 26, 2010). 

[4] Air Force Manual 65-510, Financial Management: Business Case 
Analysis Procedures, September 22, 2008, identifies a business case 
analysis as considerably broader in scope than a cost-benefit analysis. 

[5] DOD Directive 4151.18, Maintenance of Military Materiel (Mar. 31, 
2004). 

[6] Air Force Manual 65-510, Financial Management: Business Case 
Analysis Procedures. 

[End of section] 

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