Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 1 of 14

Ie H

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 2 of 14

E

D

C B

A Air inlet Air Inlet Duct Air Inlet Screen Compressor Inlet GV 00 Stage Blades 00 Stage GV

Borescope Port 4th Stage Blades 4th Stage GV 5th Stage Blades

Borescope Port 11th Stage Blades 11th Stage GV 12th Stage Blades

Fuel Injectors Compressor Exit GV Injectors Combustor Interior Combustor Pins Torch Tube Sliding Ring 1st Stage Nozzle 1st Stage Blades

Thermocouple Port 2nd Stage Nozzle 2nd Stage Blades 2nd Stage Tip Shoe Blade Retaining Pins 3rd Stage Nozzle 3rd Stage Tip Shoe 3rd Stage Blades

VGV

External Variable Guide Vanes IGV 00 Stage VGV 0 Stage VGV 1st Stage VGV 2nd Stage VGV

RGB Inspection Port Pinion & Star Gear Star Gear 2nd stage Accessory Gear Low Speed Brg

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 3 of 14

Access

Location

Picture Description Inspection for Severity

Air Inlet

A

Air Inlet Duct a) Potential FOD

b) Corrosive Pitting

c) Cracks

d) Excessive

fouling

None

None

None

None

Air Inlet

A

Air Inlet Screen a) Potential FOD b) Cracks,

damaged mesh

None None

Air Inlet

A

Inlet Guide Vanes a) Nicks and dents. Quantity and size b) Excess of

fouling

c) Corrosive pitting. Affected

area

None None

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 4 of 14

Access

Location

Picture Description Inspection for Severity

Air Inlet

A

00 Stage

Compressor Blades

a) Nicks and

dents. Quantity and size.

b) Excessive fouling

c) Corrosive

pitting. Affected area. d) Tip rub. Gap width and metal curling.

None

None

None

None

Air Inlet

A

00 Stage Guide

Vanes

a) Nicks and

dents. Quantity and size.

b) Excessive fouling

c) Corrosive

pitting. Affected area.

Superfici

al nicks

None

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 5 of 14

Access Location

Picture Description Inspection for Severity

Borescope Port

B

4th Stage Compressor Blades

a) Nicks and dents. Quantity and size. b) Excessive fouling

c) Corrosive

pitting. Affected area.

d) Tip rub. Gap width and metal

curling.

None None

None

None

Borescope Port

B

4th Stage Compressor GV

a) Nicks and dents. Quantity

and size.

b) Excessive fouling c) Corrosive pitting. Affected area.

None

None None

Borescope Port

B

5th Stage Compressor Blades

a) Nicks and dents. Quantity

and size.

b) Excessive fouling

c) Corrosive pitting. Affected area. d) Tip rub. Gap width and metal

curling.

None

None

None None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 6 of 14

Access

Location

Picture Description Inspection for Severity

Borescope

Port

C

11th Stage

Compressor Blades

a) Nicks and

dents. Quantity and size. b) Excessive fouling

c) Corrosive pitting. Affected

area.

d) Tip rub. Gap width and metal curling.

None

None

None

None

Borescope

Port

C

11th Stage

Compressor GV

a) Nicks and

dents. Quantity and size.

b) Excessive

fouling c) Corrosive pitting. Affected area.

None

Rust on

both sides None

Borescope Port

C

12th Stage Compressor Blades

a) Nicks and dents. Quantity and size.

b) Excessive

fouling

c) Corrosive pitting. Affected area. d) Tip rub. Gap width and metal curling.

None

None

None None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 7 of 14

Access

Location

Picture Description Inspection for Severity

Fuel

Injectors

D

Compressor Exit GV a) Nicks and

dents. Quantity and size. b) Excessive fouling.

c) Corrosive pitting. Affected

area.

None

None

Quite advance

d rust

Fuel Injectors

D

Injectors a) Pilot Centerbody

erosion. b) Fuel hole contamination or blockage.

c) Cracks.

Quantity and size.

d) Liquid only: broken main fuel spokes.

None

Sulfidation

None

None

Fuel Injectors

D

Combustor Interior a) Cracks. Quantity and size b) Thermal

Erosion.

c) Hot spots.

d) Buckling or warpage.

None None

None

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 8 of 14

Access

Location

Picture Description Inspection for Severity

Fuel

Injectors

D

Combustor Pins a) Cracks. None

Fuel

Injectors

D

Torch Tube a) Thermal

erosion.

None

Fuel Injectors

D

Clamp ring/Sliding Ring

a) Thermal erosion. Depth and affected area.

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 9 of 14

Access

Location

Picture Description Inspection for Severity

Fuel

Injectors

D

1st Stage Turbine

Nozzle: - Leading edge - Airfoil surface

- Trailing edge

a) Cracks.

Quantity, length, and orientation.

b) Thermal erosion. Depth

and affected area.

c) F.O.D. Affected area

None

None

None

Fuel Injectors

D

1st Stage Turbine Blades:

- Leading edge - Airfoil surface

- Trailing edge - Blade Tip

a) Cracks. Quantity, length,

and orientation.

b) Thermal erosion. Depth

and affected area. c) F.O.D. Affected area d) Tip rub. Gap

width.

None

None

None None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 10 of 14

Access

Location

Picture Description Inspection for Severity

T5 Port

E

2nd Stage Turbine

Nozzle: - Leading edge - Airfoil surface - Trailing edge

a) Cracks.

Quantity, length, and orientation. b) Cracks. c) Thermal

erosion. Depth and affected area.

None

None None

T5 Port

E

2nd Stage Turbine

Blades: - Leading edge - Airfoil surface - Trailing edge - Blade Tip

a) Cracks.

Quantity, length, and orientation. b) Thermal erosion. Depth and affected area.

c) F.O.D. Affected

area

d) Tip rub. Gap width.

None

None

None

None

T5 Port

E

3rd Stage Turbine Nozzle:

- Leading edge - Airfoil surface - Trailing edge

a) Cracks. Quantity, length,

and orientation. b) Cracks. c) Thermal erosion. Depth and affected area.

None

None None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 11 of 14

Access

Location

Picture Description Inspection for Severity

T5 Port

E

3rd Stage Turbine

Blades: - Leading edge - Airfoil surface

- Trailing edge - Blade Tip

a) Cracks.

Quantity, length, and orientation.

b) Thermal erosion. Depth

and affected area.

c) F.O.D. Affected area d) Tip rub. Gap width.

None

None

None None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 12 of 14

Access

location

Picture Description Inspection for Severity

External

VGV

VGV

IGV a) Cracks

b) Lever arms bent c) Grommet out of position on

unison ring

d) Corrosion

None

None None

None

External VGV

VGV

00 Stage VGV a) Cracks

b) Lever arms bent

c) Grommet out of position on unison ring d) Corrosion

None

None

None None

External

VGV

VGV

0 Stage VGV a) Cracks

b) Lever arms bent c) Grommet out of position on

unison ring d) Corrosion

None

None None

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 13 of 14

Access location

Picture Description Inspection for Severity

External VGV

VGV

1st Stage VGV a) Cracks

b) Lever arms bent c) Grommet out of position on unison ring

d) Corrosion

None

None None

None

External VGV

VGV

2s Stage VGV a) Cracks b) Lever arms bent c) Grommet out

of position on unison ring

d) Corrosion

None None None

None

Borescope Inspection Report Taurus 70 CED

MO-S-113

24.05.2012

Page 14 of 14

Access location

Picture Description Inspection for Severity

Inspection Port

RGB

Pinion Double Helical & Star Gear

a) Gear wear

b) Teeth Cracks

None

None

Inspection Port

RGB

Star Gear 2nd Stage – Ring Gear

a) Gear wear b) Teeth Cracks

None None

Inspection Port

RGB

Accessory Gear a) Gear wear

b) Teeth Cracks

None

None

Inspection Port

RGB

Low Speed Bearing a) Wear

None