Aircraft Operational Availability A KPI to Monitor Fleet Performance

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

Presented by

Jacques-Olivier Chevallier Maintenance Economics Performance & forecast

Customer Services

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11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

Content

1. Context and definition

2. Data reporting and standard

3. Operational Availability at Airbus

4. Conclusion

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11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

CONTEXT & DEFINITION

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Context

Stating the obvious:

An aircraft makes money when flying

An aircraft costs money whether it is flying or not

Optimized aircraft availability is crucial to profitable operations

Airlines feedback: need decision criteria allowing to Maximize

revenue at a reasonable cost

Many Airlines use to monitor availability but scope and definition

are different from one to the other

The aircraft availability for Revenue Service is a key

information for airlines

Need to get a standard

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Aircraft Operational Availability Principle

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Operations Operational Interruptions

&

Maintenance

AIRLINE

Available For Operations

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Aircraft Operational Availability Principle (contd)

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

Unavailable for operations

AIRLINE

Operations Operational Interruptions

&

Maintenance

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Operational availability description

TOTAL TIME

Operating time

non-operating time

Unplanned Out of service

time

Planned Out of service

time Standby time Service time

Revenue making for an A/L :

Time during block hours, including:

Flight route prepared & "flight

authorization" ready

Pre-flight inspection

Pax & cargo boarding & unboarding

Fuelling & servicing

Catering

Taxi

Flight

Flight closure by crew

Night stop

Transit TAT

Other natural

downtime

MPD tasks

Modification

Packages

Cabin refurbishment

Check Overrun

Operational

interruptions

AOG

Technical Non-technical

Aircraft operational unavailability

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Definition and scope

Definition:

Aircraft Operational Availability Measures the capability that an aircraft is

determined to be fit for revenue service within Airline Operations

Scope:

Aircraft operational availability is obtained by focusing on unavailability reasons

Operational unavailability covers maintenance activities, both planned and unplanned, for technical reasons, having a direct impact on aircraft

operations

it includes factors that an aircraft manufacturer can influence and measure

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

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Benefits & constraint

Benefits

Monitor availability vs. targets

Benchmark with other airlines

Optimize grounding times

Assess maintenance organization / strategy vs. availability

Optimize aircraft availability

Constraint:

The aircraft operational availability definition needs data collection

Some data is already reported (e.g. delays etc.)

Some data is not reported today (e.g. Check overrun duration, AOG time)

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

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11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

DATA COLLECTION

&

STANDARD

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Data Collection

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Unavailability data are reported at event level

Unavailability data usually comes from maintenance

planning team within M&E organisation

Data are generally extracted from Airline Maintenance

Information System (MIS) but no automatic extract is

feasible

need a standard to support data collection (data elements,

format etc.)

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Data reporting example

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Aircraft

reg.

Unavailabil

ity event

type

Event

start

date

Event

start

time

Event

end

date

Event

end

time

Event

duratio

n

(Hours)

Planned,

event detail

Unplanned

, event

detail

Unplanned

events

associated

ATA

chapter

Event description Planned

event detail

XX-XXA Planned 31/05/1

3 12:00 01/06/13 04:00 16 Light check

Weekly Check/TS on #4 Eng

defect/TS on #2 Eng Cowling

unable to close

Weekly

XX-XXB Planned 03/06/1

3 00:01 03/06/13 08:00 8

Defect

correction /

troubleshooti

ng

TS on #2 Eng

XX-XXA Planned 03/06/1

3 12:30 03/06/13 23:59 11.5 Light check A1 Check A Check

XX-XXC Unplanned 05/06/1

3 13:00 07/06/13 06:00 41

Technical

unavailabilit

y (AOG)

52 Door 2L crack rectification

XX-XXF Planned 06/06/1

3 00:30 06/06/13 01:30 1 Light check Weekly Check Weekly

XX-XXE Planned 06/06/1

3 11:00 06/06/13 15:00 4 Light check Weekly Check Weekly

XX-XXD Planned 09/06/1

3 00:01 11/06/13 10:00 58

Modification

package Door 2L replacement

XX-XXE Unplanned 17/06/1

3 23:00 19/06/13 10:00 35

Technical

unavailabilit

y (AOG)

49 Pre-dep walk around found APU Oil

Leak

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Data Reporting & ATA SPEC 2000

Availability is addressed within ATA e-business Reliability Interest Group (RIG)

Out Of Service Record has been defined (draft in validation phase)

Availability reporting capability will be included in ATA SPEC 2000 Chapter 11 (Reliability Data Collection/Exchange)

Availability reporting capability could be available with next release by mid 2014 (at best)

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OPERATIONAL AVAILABILITY

AT AIRBUS

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Nov. 13

ATA Spec 2000

validated

What has been achieved and launched

12 airlines involved

OA requirement has been confirmed by A380 operators (feedback from Support symposiums)

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

Roll out to

A380 operators

A380 OR

seminar A380

symposium

Pilot

launch

Pilot

closure

Pilot phase Intelligence

2011 2012

Implementation

on dedicated

fleets

2013

Scope and

definitions

OA in A350 EIS

phase

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Pilot quantitative results Long range aircraft type

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Next steps

Make Operational Availability a KPI existing right from A350 EIS (on-going discussions with first operators)

Roll out for A320 and A330/340 Programmes

Industrialisation of data collection and reporting

Manage Operational Availability KPI the same way as the

Operational Reliability

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DR/OR

Severity Index (SI)

Operational availability

OA: the decisive KPI to monitor fleet performance

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

Fleet

performance

understanding

scope chargeable OIs OI costs

Aircraft Inherent reliability

OI operational

impact weight

Technical Unavailability

Maintenance

organisation/

strategy

operational

impact

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CONCLUSION

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Conclusion

Operational Availability complements existing KPI to better understand fleet performance from an airline perspective

Maximize aircraft availability for revenue service by

optimizing technical downtimes

Now it is time to use it extensively

Consolidate definition & standard

Industrialize data collection and reporting

11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

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11-13 September 2013 9th IATA Maintenance Cost Conference - Dublin

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