### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Number 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

January 2015 8 Pages 7 2

- A207
Page 1

Use or disclosure of this information is subject to The restrictions on the title page of this document 1. PLANNING INFORMATION

A. Effectivity

(1) Engine s affected: All installed and uninstalled Viper

Mk. 601

- 22 engines

(2) Asse mbl ies affected: All Group A components as detailed

in Table 1.

B. Reason

A review of Group A Lifing by Rolls

- Royce plc has resulted in reduced Flight Cycle Lives for the components listed in

Table 1.

Group A lives for these components that are presently documented in the Viper 601

- 22 Overhaul and Maintenance Manuals are unsupported.

Performance : Not affected Reliability : Improved

Maintenance : Not affected

Overhaul : Affected Repair Sche mes : Not affected Interchangeability : Not affected

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Number 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

72

- A207 January 2015
Page 2 Use or disclosure of this information is subject to

The restrictions on the title page of this document C. Description

(1) This ALERT Service Bulletin instructs operators to implement the revised supported cleared lives in flight cycles for the following components detailed in

Table 1.

Table 1

- Revised Group A Component Lives

Item Part No

. Present

c leared cyclic life (flights)

Ref Time Limits Chapter

5

- 10

- 01 of

Overhaul

Manual dated

Feb 2013 Revised

Cleared Cyclic

Life (flights)

Compressor Rotor

Discs

Zero stage V900 022

V901388 16100

16100 11280

11280

1 st stage V27418

V900633

V901351 7030

13000

13000 1525

11600

1160 0

2 nd stage V41178

V901360 11475

11475 11476

11476

3rd stage V41180

V901361 14075

14075 12160

12160

4th stage V27427

V901362 14075

14075 12160

12160

5th stage V42057

V901363 12600

12600 10480

10480

6th stage V4 2 059

V901364 12600

12600 12000

12000

7th stage (front) V28501

V901365 16200

16200 7673

7673

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Num ber 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

January 2015 7 2

- A207
Page 3

Use or disclosure of this information is subject to The restrictions on the title page of this document Tab le 1

- Revised Group A Component Lives (cont.)

Item Part No. Present

c leared cyclic life (flights)

Ref Time Limits Chapter

5

- 10

- 01 of

Overhaul

Manual dated

Feb 2013 Revised

Cleared Cyclic

Life (flights)

7th stage (rear) V28502

V901366 16200

16200 7673

7673

7th stage sub unit (comprising V28501

front & V28502 rear

discs) V35813 16200 7673

7th stage sub unit (comprising V901365

front & V901366 rear

discs) V901359 16200 7673

Compressor Mainshaft V900008

V900053

V900648 20720

20720

20720 5431

5431

11920

Centre Bearing Hub V900007

V900994 9600

9600 9600

9600

Turbine Mainshaft V950036

V950211

V950707

V950819 12000

12000

12000

12000 3481

3481

3481

3481

Turbine Disc Stage 1 V900003

V901328 12000

12000 12000

12000

Turbine Disc Stage 2 V900004

V900259

V901332 15800

15800

15800 4446

15800

15800

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Number 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

72

- A207 January 2015
Page 4 Use or disclosure of this information is subject to The restrictions on the title page of this document Table 1

- Revised Group A Component Lives (cont.)

Item Part No. Present

c leared cyclic life (flights)

Ref Time Limits Chapter

5

- 10

- 01 of

Overhaul

Manual dated

Feb 2013 Revised

Cleared Cyclic

Life (flights)

Turbine Inter

- stage Labyrinth Ring V950018

V950111

V901330

V901331 13025

13025

13025

13025 4939

4939

4939

4939

Combustion Chamber Outer Casing V950013

V950331 32000

32000 8993

8993

(2) Any components that have operated beyond the revised cleared life in flight cycles must be removed from service operation

.

(3) Engine log books and component log cards must be

amended with the revised lives.

(4) The unsuppor t able l ives in Table 1 of this Bulletin are published in:

(a) Viper 601

- 22 Overhaul Manual, Chapter 5

- 10

- 0 1

, Table 1

(b) Viper 601

- 22 Maintenance Manual, Chapter 5

- 10

- 0 0

, Table 1

(5) Both the above Manuals will be updated to reflect the revised cleared life in flight cycles published in

Table 1

.

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Num ber 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

January 2015 7 2

- A207
Page 5

Use or disclosure of this information is subject to The restrictions on the title page of this document D. Compliance

(1) It is anticipated that this Alert Service Bulletin

will become the s ubject of an EASA Airworthiness

Directive.

(2) Mandatory: on r eceipt of this Service Bulletin

.

(3) Refer to Engine log book and/or the component log card to establish the Time Since New (TSN) flight cycles

life for the Group A components in Table 1

.

(4) Installed engines

- I mmediately upon receipt of this

S ervice B ulletin

.

(5) Engines not installed

- Prior to installation

.

(6) Uninstalled Group A components in Table 1

- Prior to installation in an engine

.

E. Approval

The technical content of this ALERT Service Bulletin was
approved under the authority of Design Organisation
Approval EASA.21J.035 on 6 th November 201 4

.

F. Manpower

- Field Embodiment

Not applicable

G. Material

- Cost and Availability

Price and availability from Rolls

- Royce on request.

H. Tooling

- Cost and Availability

No additional special tools are required.

I. Weight and Balance

Engine weight change None

J. Reference

(1) Viper Mk. 601

- 22 Engine Overhaul Manual

(2) Viper Mk. 601

- 22 Engine Maintenance Manual

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Number 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

72

- A207 January 2015
Page 6 Use or disclosure of this information is subject to The restrictions on the title page of this document K. Publications Affected

(1) Viper MK 601

- 22 Engine Overhaul Manual, Chapter 5

- 10

- 01, Table 1

(2) Viper MK 601

- 22 Engine Maintenance Manual, Chapter 5

- 10

- 00, Table 1

2

. ACCOMPLISHMENT INSTRUCTIONS

A. Installed and Uninstalled E ngines

( 1 ) Check the engine log book to establish the TSN flight cycles of each Group A component. If the component life TSN is greater than the revised flight cycles

life limit detailed in T able 1 of this bulletin, the engine must be removed from service operation. Proceed

to R ecording I nstructions at Para 2.C of this

bulletin

.

( 2 ) If the component life TSN is below the flight cycles

detailed in Table 1 of this bulletin, but will exceed

this tota l if operated to the next planned removal point, then the engine may continue in service operation until the revised flight cycle life limit is reached. Proceed to Recording Instructions at Para

2.C. of this bulletin.

( 3 ) If the component life TSN is below the revised flight cycles life limit detailed in Table 1 of t his bulletin, and the component will not exceed th is total if operated to the next planned removal date then proceed to Recording Instructions at Para 2.C. of t his

bulletin.

B. Uninstalled Group A Components

.

(1) Check the component log card/relevant document to establish the TSN flight cycles of the component. If the component life TSN is greater than the revised flight cycle life detailed in Table 1 of this bulletin, the component must be rejected. Proceed to Recording Instructions at Para 2.C. of this bulletin.

(2) If the component life TSN is below the revised flight cycle life detailed in Table 1 of this bulletin then proceed to Recording Instruc tions at Para 2.C. of this

bulletin.

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Num ber 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

January 2015 7 2

- A207
Page 7

Use or disclosure of this information is subject to The restrictions on the title page of this document C

. Recording Instructions

(1) Installed Engines

(a) Installed engines that contain Group A components
that have exceeded the revised flight cycle life

limit detailed in Table 1 of this bulletin,
endorse the engine log book with “Engine removed
from service oper ation for Group A life expiry in

accordance with SB72

- A20 7 .”

(b) Installed engines that contain Group A components
that have not exceeded the revised flight cycle

life limit as detailed in Table 1 of this
bulletin, but will exceed the revised flight cycle

life limit before the next planned engine removal,
amend the engine log book and compon ent log

card/relevant docum ent to reflect the revised
flight cycle life of each Group A component as
detailed in Table 1 of this bulletin, and r ecord
compliance with SB72

- A20 7

.

(c) Installed engines that contain Group A components
that have not exceeded the revised flight cycle

life detailed in Table 1 of this bulletin, and

will not exceed the life limit before the next
planned engine removal, amend the engine log book
and compon ent log card/relevant document to reflect the revised flight cycle life limit of

each Group A component as detailed in Table 1 of
this bulletin, and record compliance with SB72

- A20 7

.

( 2 ) Uni nstalled Engines

(a) Uni nstalled engines that contain Group A

components that have exceeded the revised flight
cycle life limit as detailed in Ta ble 1 of this
bulletin endorse the engine log book with “Engine

declared unserviceabl e for Group A life expiry in

accordance with SB72

- A20 7 ”.

### ROLLS

- ROYCE plc



# ALERT SERVICE BULLETIN

Mk 601

- 22 Number 72

- A207

ENGINE

- REVISED COMPONENT GROUP A LIVES AND REMOVAL FROM SERVICE OF

COMPONENTS THAT HAVE OPERATED BEYOND THE IR SUPPORTABLE LIVES

72

- A207 January 2015
Page 8 Use or disclosure of this information is subject to

The restrictions on the title page of this document (b) U ninstalled engines that contain Group A

components that have not exceeded the revised
flight cycle life limit as detailed in Table 1 of
this bulletin, amend the engine log book and

compon ent log card/relevant document to reflect
the revised flight cycle life of each Group A

component as detailed in Table 1 of this bulletin,
and record compliance with SB72

- A2 0 7

.

(3) Uninstalled Group A C omponents

(a) Components that have exceeded the revised flight
cycle life limit as detailed in Table 1 of this

bulletin

, endorse the component log card with
“Life Expired in accordance with SB72

- A20 7 ”.

(b) Components that have not exceeded the revised
flight cycle life limit as detailed in Table 1 of

this bulletin

, amend the component log

card/relevant document to reflect the revised
flight cycle life limit detailed in Table 1 of
this bulletin and record compliance wi th SB72

- A20 7

.

D. Re porting Compliance

Compliance with this Service Bulletin is to be reported to

Rolls

- Royce plc for each component.