http://www.defence.ie/website.nsf/do...2571CA00340B3D
Value for Money (VFM) Reviews
Expenditure Review - Maintenance of Aircraft in the Air Corps
Military personnel from the Army and the Air Corps, and civilian personnel from the Department of Defence produced this Expenditure Review of Maintenance of Aircraft in the Air Corps. This review topic was approved by Government for inclusion in the 2002 – 2004 programme of expenditure reviews.
The two key performance indicators for the Air Corp Maintenance function are the aircraft serviceability rate and the maintenance cost per hour. The serviceability rates varied over the reporting period. The age and diversity of the fleet were significant factors to the variation. The maintenance cost per hour varies according to each aircraft. The older aircraft are significantly more expensive to maintain.
At the end of 2003 the Air Corps were operating thirteen and maintaining eleven different aircraft types. Aircraft purchased prior to 1980 delivered 45% of flying hours. There are significant savings to be made from operating a reduced number of modern aircraft types. The retention of the Alouette helicopters alone, instead of their modern equivalent has increased maintenance costs by approximately €5.1 million in the last ten years. (At 2002 costs)
Air Corps aircraft are maintained to manufacturer’s requirements, which are sometimes adapted for the specific roles of some aircraft. The quality of the maintenance and the resulting safety standards are maintained to a high level.
The amount of contracted maintenance increased by almost 100% between 1998 and 2002 without a corresponding increase in serviceability rates. This is due in part to the difficulties in sourcing spares for the older aircraft, and the uniqueness of some of the Air Corps aircraft, on which Air Corps personnel have the most experience.
Aircraft maintenance performed in-house can be completed in less man-hours than contracted organisations, but because of skills shortages, difficulties with the availability of spares and the fact that the majority of maintenance is performed during normal working hours, the turn around times for maintenance checks can be compromised. Insufficient performance data is kept to facilitate labour productivity analysis.
The organisational structure of the aircraft maintenance function is based on a fleet of seven modern aircraft types that is, as yet, an unrealised fleet configuration. Within that structure there is no Officer accountable to GOC Air Corps for the performance of the maintenance function. Some of the maintenance squadrons are considerably understaffed. This is partly attributable to a decision, which culminated in no apprentice intakes for 1997 and 1998. This has meant that, allowing for technicians working in support in the aircraft workshops, in the Technical Training School and support functions, there only remains between 38 and 44 personnel, out of 277, available to participate in maintenance crews in the hangars.
The diversity of the fleet has resulted in higher stock levels and a high number of suppliers, which is both uneconomic and inefficient. This is compounded by the lack of a fleet replacement policy, which has hindered the adoption of an effective stock holding policy, consequently leading to an overuse of the more expensive Aircraft on Ground (AOG) purchasing system.
Aircraft Serviceability & Maintanance Cost per hour (2003):
GIV 81% €1555
CASA 75% €918
Beechcraft 76% €714
Marchetti 52% €570
Cessna 61% €213
Defender 82% €520
A III 41% €877
Gazelle 35% €1118
Dauphin 57% €1635
Squirrel 66% €580
Value for Money (VFM) Reviews
Expenditure Review - Maintenance of Aircraft in the Air Corps
Military personnel from the Army and the Air Corps, and civilian personnel from the Department of Defence produced this Expenditure Review of Maintenance of Aircraft in the Air Corps. This review topic was approved by Government for inclusion in the 2002 – 2004 programme of expenditure reviews.
The two key performance indicators for the Air Corp Maintenance function are the aircraft serviceability rate and the maintenance cost per hour. The serviceability rates varied over the reporting period. The age and diversity of the fleet were significant factors to the variation. The maintenance cost per hour varies according to each aircraft. The older aircraft are significantly more expensive to maintain.
At the end of 2003 the Air Corps were operating thirteen and maintaining eleven different aircraft types. Aircraft purchased prior to 1980 delivered 45% of flying hours. There are significant savings to be made from operating a reduced number of modern aircraft types. The retention of the Alouette helicopters alone, instead of their modern equivalent has increased maintenance costs by approximately €5.1 million in the last ten years. (At 2002 costs)
Air Corps aircraft are maintained to manufacturer’s requirements, which are sometimes adapted for the specific roles of some aircraft. The quality of the maintenance and the resulting safety standards are maintained to a high level.
The amount of contracted maintenance increased by almost 100% between 1998 and 2002 without a corresponding increase in serviceability rates. This is due in part to the difficulties in sourcing spares for the older aircraft, and the uniqueness of some of the Air Corps aircraft, on which Air Corps personnel have the most experience.
Aircraft maintenance performed in-house can be completed in less man-hours than contracted organisations, but because of skills shortages, difficulties with the availability of spares and the fact that the majority of maintenance is performed during normal working hours, the turn around times for maintenance checks can be compromised. Insufficient performance data is kept to facilitate labour productivity analysis.
The organisational structure of the aircraft maintenance function is based on a fleet of seven modern aircraft types that is, as yet, an unrealised fleet configuration. Within that structure there is no Officer accountable to GOC Air Corps for the performance of the maintenance function. Some of the maintenance squadrons are considerably understaffed. This is partly attributable to a decision, which culminated in no apprentice intakes for 1997 and 1998. This has meant that, allowing for technicians working in support in the aircraft workshops, in the Technical Training School and support functions, there only remains between 38 and 44 personnel, out of 277, available to participate in maintenance crews in the hangars.
The diversity of the fleet has resulted in higher stock levels and a high number of suppliers, which is both uneconomic and inefficient. This is compounded by the lack of a fleet replacement policy, which has hindered the adoption of an effective stock holding policy, consequently leading to an overuse of the more expensive Aircraft on Ground (AOG) purchasing system.
Aircraft Serviceability & Maintanance Cost per hour (2003):
GIV 81% €1555
CASA 75% €918
Beechcraft 76% €714
Marchetti 52% €570
Cessna 61% €213
Defender 82% €520
A III 41% €877
Gazelle 35% €1118
Dauphin 57% €1635
Squirrel 66% €580
Comment