Aircraft Maintenance Metrics
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Questions and Answers

A high FSE rate indicates poor planning and execution of the weekly flying schedule.

False

Aircraft Availability is expressed as total time possessed plus depot possessed.

False

The Aircraft Availability rate is a percentage of a fleet's total active inventory that is not available.

False

The FSE rate is a measure of the unit's ability to provide sufficient aircraft to accomplish mission requirements.

<p>False</p> Signup and view all the answers

Definitions of possessed codes can be found in AFI 21-103.

<p>True</p> Signup and view all the answers

A low FSE rate always indicates poor planning and execution of the weekly flying schedule.

<p>False</p> Signup and view all the answers

A low MC rate may indicate a unit is experiencing many hard breaks that allow them to turn an aircraft for many hours or several days.

<p>False</p> Signup and view all the answers

Fixing aircraft well is more important than fixing aircraft fast according to the message units should hear from leadership.

<p>True</p> Signup and view all the answers

A unit with poor production problems may consistently exceed 4-/8-/12- hour fixes in a wide variety of systems.

<p>True</p> Signup and view all the answers

The TNMCM rate is perhaps the least common and useful metric for determining if maintenance is being performed quickly and accurately.

<p>False</p> Signup and view all the answers

TNMCS is driven principally by spare parts availability and maintenance practices.

<p>False</p> Signup and view all the answers

Maintenance should be driven to make undesirable CANNs just to keep the TNMCS rate low.

<p>False</p> Signup and view all the answers

The R/R rate is perhaps the most important and accurate measure of the quality of maintenance performed in a unit.

<p>True</p> Signup and view all the answers

A unit's goal should be to have at least one R/R per month.

<p>False</p> Signup and view all the answers

A high R/R rate may indicate lack of thorough troubleshooting and inordinate pressure to commit aircraft to the flying schedule for subsequent sorties.

<p>True</p> Signup and view all the answers

Ground aborts are the primary driver of sortie utilization rates.

<p>False</p> Signup and view all the answers

A high commitment rate has no influence on Flight Schedule Effectiveness (FSE).

<p>False</p> Signup and view all the answers

The Fully Mission Capable (FMC) rate is a leading indicator of parts demand.

<p>False</p> Signup and view all the answers

The Mission Capable (MC) rate is a responsive metric for measuring a unit's performance.

<p>False</p> Signup and view all the answers

A low MSE rate indicates a unit is performing efficient planning and maintenance.

<p>False</p> Signup and view all the answers

DDs are categorized into Awaiting Maintenance (AWM) and Awaiting Replacement (AWR).

<p>False</p> Signup and view all the answers

The Hourly Utilization Rate reflects only the performance of the operations team.

<p>False</p> Signup and view all the answers

Air aborts are always a result of system malfunctions.

<p>False</p> Signup and view all the answers

Maintenance should prioritize scheduling the flying schedule over maintenance.

<p>False</p> Signup and view all the answers

Cannibalization actions are only performed on engines.

<p>False</p> Signup and view all the answers

The Abort Rate is an indicator of only aircraft reliability.

<p>False</p> Signup and view all the answers

FSE rate is a measure of a unit's total performance.

<p>True</p> Signup and view all the answers

Supply should maintain an aggressive follow-up program to reduce the CANN rate.

<p>False</p> Signup and view all the answers

A CANN action is only taken when there is a surplus of spare parts.

<p>False</p> Signup and view all the answers

The Code 3 Break Rate measures the percentage of sorties that take off early.

<p>False</p> Signup and view all the answers

What is Aircraft Availability primarily measuring?

<p>The ability to provide sufficient aircraft for mission requirements</p> Signup and view all the answers

What is the primary goal of achieving a high FSE rate?

<p>To plan and execute the weekly flying schedule effectively</p> Signup and view all the answers

What is the relationship between Aircraft Availability and total active inventory?

<p>Aircraft Availability is a percentage of total active inventory that is available</p> Signup and view all the answers

What is the importance of sticking to the printed flying schedule?

<p>It reduces turmoil and personnel tension</p> Signup and view all the answers

What is the primary benefit of introducing turbulence intentionally?

<p>It avoids additional turbulence later</p> Signup and view all the answers

What is the importance of maintaining a good FSE rate?

<p>It reduces turmoil and personnel tension</p> Signup and view all the answers

What is the primary reason for a low MSE rate in a unit?

<p>The unit is experiencing turbulence due to poor planning</p> Signup and view all the answers

What is the primary purpose of a unit scheduling maintenance first?

<p>To avoid turbulence and ensure careful planning</p> Signup and view all the answers

What are the two categories of Deferred Discrepancies (DDs)?

<p>Awaiting Maintenance (AWM) and Awaiting Parts (AWP)</p> Signup and view all the answers

What is the primary purpose of a Cannibalization (CANN) action?

<p>To replace an unserviceable part with a serviceable one</p> Signup and view all the answers

What should supply do to maintain visibility on parts ordered for AWP deferred discrepancies?

<p>Maintain an aggressive follow-up program</p> Signup and view all the answers

What should maintenance schedulers do to minimize the AWM rate?

<p>Schedule an aircraft down for a day to work deferred discrepancies</p> Signup and view all the answers

What is the primary reason for a unit's high CANN rate?

<p>Base supply cannot deliver parts on time</p> Signup and view all the answers

What does the CANN rate measure?

<p>The average number of CANN actions per 100 sorties flown</p> Signup and view all the answers

What is the primary purpose of measuring the CANN rate?

<p>To measure the effectiveness of the supply chain</p> Signup and view all the answers

What should a unit do to prioritize maintenance over flying?

<p>Schedule maintenance first and then support the flying schedule</p> Signup and view all the answers

What is a major factor affecting the Flight Schedule Effectiveness (FSE) rate?

<p>Ground aborts</p> Signup and view all the answers

What is the primary indicator of aircraft system reliability and quality of maintenance?

<p>Abort rate</p> Signup and view all the answers

What is the impact of a high commitment rate on the FSE rate?

<p>It decreases the FSE rate</p> Signup and view all the answers

What is the purpose of tracking the Sortie Utilization (UTE) rate?

<p>To assess the effectiveness of the production effort</p> Signup and view all the answers

What is the Fully Mission Capable (FMC) rate used to measure?

<p>Parts demand</p> Signup and view all the answers

What is the primary reason for a low Mission Capable (MC) rate?

<p>Lack of spare parts</p> Signup and view all the answers

What is the relationship between the abort rate and FSE rate?

<p>A high abort rate decreases the FSE rate</p> Signup and view all the answers

What is the purpose of measuring the Hourly Utilization Rate?

<p>To reflect the combined performance of operations and maintenance</p> Signup and view all the answers

Why is it important to review chargeable deviations?

<p>Because they cause FSE to decrease</p> Signup and view all the answers

What may be indicated by a low MC rate?

<p>Many hard breaks that don't allow aircraft to be turned around quickly</p> Signup and view all the answers

What is crucial to minimizing downtime?

<p>Prioritization of jobs, good workload distribution, adequate facilities, and robust coordination</p> Signup and view all the answers

What does the TNMCM rate primarily indicate?

<p>The speed and accuracy of maintenance</p> Signup and view all the answers

What can maintenance do to lower the TNMCS rate?

<p>Consolidate feasible CANNs to as few aircraft as practical</p> Signup and view all the answers

What should be the goal of a unit regarding R/Rs?

<p>To have no R/Rs</p> Signup and view all the answers

What may be indicated by a high R/R rate?

<p>Lack of thorough troubleshooting; inordinate pressure to commit aircraft to the flying schedule for subsequent sorties; or a lack of experienced, qualified, or trained technicians</p> Signup and view all the answers

What is the 12-Hour Fix Rate?

<p>The percentage of aircraft breaks recovered within 12 hours of landing</p> Signup and view all the answers

What should leaders emphasize to units?

<p>Fixing aircraft well is more important than fixing aircraft fast</p> Signup and view all the answers

What should not be done to keep the TNMCS rate low?

<p>Drive maintainers to make undesirable CANNs</p> Signup and view all the answers

What should be examined to identify root causes and lasting fixes?

<p>Each R/R discrepancy</p> Signup and view all the answers

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