Foundation of First Air Supply and

Maintenance Center (1st ASMC) laid

down to 1926s. Afterwards, till 1950s,

maintenance and repair related activities

were performed for propeller aircraft

such as Mosquite, Spitfires,

Moran, Heinkel, Smolik and Harvolt

which were available in Air Force

inventory.

From that date, maintenance and

repair activities were performed for

fighter jets, and F-84, F-86 and F-100

till 1970.

In 1967, first jet engine overhaul was

accomplished and by means of this

activity some specific technical opportunities

and capabilities had been

gained. These years could be accepted

as progress periods for launching new

foundations in 1st ASMC center. In

1979, first comprehensive aircraft

depot level maintenance and overhaul

were performed on F-4, and then similar

capabilities were gained for other

aircraft in 1980s.

1st ASMC has been continuously developing

its capability and capacity in the

frame of those improvements with

reorganization and modernization

projects called as REMO-I and REMOII

projects and its considerable facilities,

structure and staff renewals.

Nowadays, 1st ASMC is an institution

which has an admiring place for reaching

to a self contained status of logistic

system, and making robust effort for

opening to external world and integrating

with outer world.

1st ASMC assuming technical management

responsibility of selected weapon

systems and equipment is implementing

depot level maintenance, repair,

retrofit, test and calibration processes

and also manufacturing required spare

parts for supporting and improving of

operations activity for logistic aspect.

In order to accomplish its mission and

responsibilities, the First Air Supply

and Maintenance Center has a man

power of personnel; engineers, technicians

and administrative personnel.

Facilities to carry out the mission are

located in an area of 6 million square

meters; 220,000 square meters of

which is covered area.

Technical capabilities of 1st

ASMC;

Mainly programmed depot level maintenance,

structural and avionics modernization

have been performed for F-

4, F-4/2020, F-5/2000, F-5, T-37, T-

38 and as a result of those kinds of

activities, aircraft service life can be

extended. An additional structural

maintenance is being performed for

6 • ISSUE: 7/2007

D E F E N C E T U R K E Y

An Overview: 1st AIR SUPPLY AND

MAINTENANCE CENTER

In this issue, We would like to give you a brief overview of the 1st AIR SUPPLY AND MAINTENANCE

CENTER in Eskisehir which contributes to Turkish Defence Industry with its capabilities regarding

depot level maintenance, repair, retrofit, test and calibration processes, manufacturing spare

parts, improving of operations activity for logistic aspect.

F-110 Engine Overhaul

each F-16 through analyzing records of

CSFDR, installed in each F-16 for

determining loads each aircraft subjected

to. Thus aircraft can be monitored

individually. It also has capabilities

of software maintenance for core

avionics operational flight programs

and structural repairs.

Each aircraft stays a certain period of

time in our center for functional test,

structural inspection, repair and overhaul.

1st ASMC overhauls 300 engines such

as F110, J79, J85, J69, TYNE-MK-22,

T56, CT7, T700, GTC per a year. It also

has repair capability for 6217 different

units.

Turbo fan, turbojet, turboprop, turboshaft

engines and gas turbine compressors

and starters including F-16

Jet Fuel Starters (JFS), Accessory

Drive Gear Boxes (ADG) and

Emergency Power Units (EPU) are

being overhauled in our center.

Furthermore, more than 250 engines

have been overhauled per a year.

Aircraft and engine accessories have

also been overhauled and functionally

tested by utilizing computerized test

benches. Spare parts especially belonging

to aircraft systems and different

type of ground support equipment are

being manufactured partially based to

Research and Development (R&D).

In the scope of system improving

processes, the modernization department

performs required improvement

and overhauling projects for developing

flight safety, economic usage and

operations for the fighter aircraft available

in its inventory.

Beginning with determining of the

needs and then designing of the system,

manufacturing of the prototype,

determining changes to be applied on

the aircraft and integration of them are

being performed for carrying out those

projects through aircraft, avionics,

software and flight test engineering

which conforms to AQAP-160 and

AQAP-2110.

During integration of avionics/weapon

systems, developed by using latest

technology, to aircraft systems, monitoring

of those systems and improving

of flight operations software for using

them, 1st ASMC ‘s capabilities such as

specific flight test measuring design,

analysis of accumulated data, determining

the conformance between

design and product, carrying out structural

part stress and dynamic analysis,

and aircraft or external load aerodynamic

analysis are being successfully

performed.

Beginning with 2001, 1st ASMC is

implementing proudly system development

and fighter aircraft modernization

projects in addition to aforementioned

capabilities and existing

depot level maintenance processes.

In this scope, first national aircraft

modernization project aiming structural

and avionics overhaul of RF-4E

aircraft is launched. And, project management

processes are being accomplished

as main contractor by 1st

ASMC and subcontractors by ASELSAN

and MIKES.

For providing coefficient factor

before modernization of F-16 Block-40

aircraft, JSOW, JDAM and AIM-9X

integrations are performed through

Raytheon and Boeing support on related

to their ammunition.

An other specific software development

study is to improve an HSD sheet

capability for providing Situation

Awareness (SA) to pilots in operation

environment. And, to declare flight

tests completed and application to F-

4E/2020 aircraft executed is an honor

for 1st ASMC.

In the scope of R&D activities;

Latest technology and processes used

for overhauling jet engines are;

D E F E N C E T U R K E Y

7 • ISSUE: 7/2007

F-16

Flight Test Center

- Codep-Codal Coating,

- ADH (Activated Diffusion Healing),

- Rubber Seal,

- Borazon Plating,

- Metal Spray Methods

• Flame,

• Plasma,

• Electrolytic plating processes.

- Cleaning Methods

• Mechanical,

• Chemical,

• F-ION (flouride ion cleaning)

cleaning.

- Metal Fastening Methods:

• Gas shielded arc welding,

• Plasma arc welding,

• Electric resistance,

• Electron beam,

• Dabber tig,

- Machining Methods:

• CNC technologies,

• 5 axial machining,

• Electro-chemical machining,

• Electro-chemical milling,

• Lapping,

• EDM.

- Non-destructive inspection methods

• X-ray,

• FPI (fluorescent penetrate

inspection),

• MPI (magnetic particle inspection),

• Eddy current inspection.

The area of repairs cover;

Hydraulic and servo systems,

Electricity power systems,

Oil and fuel systems,

Brake and landing gears,

Pneumatic systems,

Oxygen converters, and

Cabin pressurizing units.

We have been overhauling and testing

more than 30,000 accessories per

a year.

A study for modernization of electronic

control systems of engine test cell,

which are available in Air Force

Command inventory, is being carried

out. And improving the hardware and

software by using the engine test cell

assigned as prototype for this application

is also being accomplished successfully

in our center.

In the avionics depot level maintenance

area, our product spectrum

includes;

Flight command and control systems,

Fire control systems,

Navigation and communication systems,

and

Aircraft engine electronics.

To support its aircraft and engine

repair shops besides the operational

bases for base level maintenance, 1st

ASMC manufactures the required

spare parts

8 • ISSUE: 7/2007

D E F E N C E T U R K E Y

F-16

F-16

1st ASMC’s manufacturing technologies

• Sheet metal bending/forming,

punch and welding,

• CNC 5 axial milling/4 axial horizontal–

vertical lathe, cylindrical

and surface milling (for structural

parts such as cap wing fold rib, T-

38 longeron, F-5/F4/F-16 spar,

bulkhead),

• F-4 /F-5 /T-38 aluminum/steel

pipe, rubber and teflon hose manufacturing,

• EDM (Electro Discharge Machine),

• Honeycomb Material

Manufacturing (rudder, trailing

edge, leading edge),

• Part design through cad-cam system

(unigraphics) and manufacturing,

• Heat treatment processes (hardening,

solution treating, aging, normalizing),

• Coating (hard chrome, copper,

nickel, cadmium, phosphate, black

oxide, hard anodize, chromic/sulphuric

acid anodize, borazon plating

and chemical aging),

• CMM (Coordinate Measuring),

• Rubber depot repair.

Aircraft structural parts, combustion

chambers, tubes and products with different

configurations are some samples

for the parts manufactured by our

distinguished center.

In its manufacturing catalogue 1st

ASMC has more than 120,000 item

and manufactures around 400,000

spare parts per year.

To produce high quality product, 1st

ASMC has type ii-b precision measurement

equipment calibration laboratories

and in these laboratories, more

than 9,000 mechanical and electronical

measurement units are being calibrated

per a year.

1st ASMC has become the first institution

within Turkish Armed Forces that

received Nato AQAP-2110 and AQAP-

160 TSE-ISO-9001 and 14001 certifications.

Also, recently it has received

TÜRKAK and JAR-145 certifications to

handle civilian aircraft.

Its engine repair shop has general electric

company conformance certification

for engine parts repair processes

such as codep/codal coating, activated

diffusion healing, borazon plating and

fluoride ion cleaning.

In chemical, metallurgical and environmental

areas, test and analysis of

aircraft fluids (such as oil, fuel,

hydraulic, oxygen and nitrogen) which

have huge importance for flight safety,

elemental analysis of metal alloys, test

of chemical materials which have shelf

life and additionally quantifying tests

of special processes, metallurgical

inspections for revealing the reasons of

breaking the damaged parts, and as a

result of 1st ASMC’s environmental

sensitivity analysis of waste water,

chimney gas and outer noise measurements

are all being accomplished in

different departments of 1st ASMC. 1st

ASMC gives high quality service

through using them for resolving

arised/to be arised problems.

For F-16 aircraft, in the scope of

numerical video recording device integration

project laboratory, aircraft

ground, EMI/EMC and flight tests

were accomplished and prototype unit

were certified. Studies are being lasting

for serial phase application.

For giving service to domestic and foreign

industrial organizations on capabilities

of 1st ASMC has revolving fund

organization is being used. Depot level

maintenance implemented on TF33

engines belonging to NATO AWACS

through channel of TEI is an instance

such an incorporation.

1st ASMC has been contributing 261

million dollar to Turkey economy each

year.

1st ASMC has been working as a world

challenging institution with its qualified

man power, technologic investments

and management system constituted

conforming to international

quality/environment system standards.