### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 1/9

2009.10.19 This document is available on the internet: www.eurocopter.com/techpub EUROCOPTER

DIRECTION TECHNIQUE SUPPORT

13725 MARIGNANE C EDEX F RANCE



# EMERGENCY 

# ALERT SERVICE BULLETIN

SUPER PUMA NUMBER VERSIONS

Civil L1, L2 

# AS332 25.02.20

AS532 25.01.35 Military U2



### SUBJECT: EQUIPMENT AND FURNISHINGS

Interference between the pilot’s and copilot’s seat straps and

bulkhead X1715

Corresponds to MOD 332V080210.00

REVISION No. DATE OF APPROVAL DATE OF ISSUE

Revision 0 On: October 19, 2009 2009.10.19

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 2/9

2009.10.19 THE INFORMATION AND INSTRUCTIONS

CONTAINED IN THIS ALERT SERVICE BULLETIN

ARE INTENDED FOR MAINTENANCE

PERSONNEL AND FLIGHT CREWS.



### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A.1. Helicopters/installed equipment

Helicopters:

- on which the "rails with the rear stop moved aft” customization, comprising rail assemblies

P/N 332P76-9012-02 and/or P/N 332P 76-9012-03, has been embodied:

. at the works,

or . by the operator, in compliance with Service Bulletin No. 25.01.26 (AS532),

and

- which do not embody MOD 332V080210.00



### NOTE 1

Rail assemblies P/N 332P76-9012-02 and 332P76-9012- 03 are "standard" type assemblies (Figure 1, Detail A). "Crashworthy" type rails (Figure 1, Detail B) are not concerned by this ALERT SERVICE BULLETIN.



### NOTE 2

Helicopters equipped with the "rails with the rear stop moved aft" customization and which do not embody MOD 332V080210.00 can be identified by the position of the rear stop relative to the tapped hole (Z) (Figure 2, PRE MOD 332V080210.00).

1.A.2. Non-installed equipment

Rail assemblies P/N 332P76-9012-02 and P/N 332P76-9012-03 which do not embody

MOD 332V080210.00.



### 1.B. ASSOCIATED REQUIREMENTS

Not applicable. 

### CAUTION

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 3/9

2009.10.19 

### 1.C. REASON

To prevent jamming of the pilot’s or copilot’s seat strap reels due to interference between the strap
and bulkhead X1715, when the seat is in the r ear high position and the seat-back tilted.

This ALERT SERVICE BULLETIN will form the subject of an EASA Airwor thiness Directive.



### 1.D. DESCRIPTION

During operational tests of the pilot’s and copilot’s seats in the extreme positions at EUROCOPTER, it was found that the seat straps interfered with bulkhead X1715.

These tests revealed that, with the "rails with the rear stop moved aft” customization installed, when the seat is in the rear high position and the seat-back fully tilted, there is a ri sk of the strap jamming between the seat and bulkhead X1715, which may prev ent the reel from reeling the strap in. This situation could result in the strap no longer retain ing the crew member in the seat, in the event of a crash or a hard landing.

Consequently, pending modification, EUROCOPTER render s the relocation of the pilot's and copilot's seat rear stops in their standard position, mandatory.



### 1.E. COMPLIANCE

EUROCOPTER renders compliance with this ALERT SERVICE BULLETIN mandatory.

1.E.1. Compliance at the works

1.E.1.a. On helicopters

- Relocate the rear stops of the pilot’s and copilot’s seats in accordance with paragraph 2. within 15

flying hours following the date of issue of th is ALERT SERVICE BULLETIN and before delivery.

1.E.1.b. On non-installed equipment

- Rail assemblies P/N 332P76-9012-02 and P/N 332P76-9012-03 of the "rails with the rear stop

moved aft" customization are no longer supplied.

1.E.2. Compliance in service: By the operator:

1.E.2.a. On helicopters / installed equipment

- Relocate the rear stops of the pilot’s and copilot’s seats in accordance with paragraph 2. within 15

flying hours following the date of issue of this ALERT SERVICE BULLETIN, indicated at the foot of the page, and at the latest by December 31, 2009.

1.E.2.b. On non-installed equipment

- Relocate the rear stops of the pilot’s and copilot’s seats in accordance with paragraph 2. before

installation and at the latest by December 31, 2009.

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 4/9

2009.10.19 

### 1.F. APPROVAL

1.F.1. Approval of the modifications

The information or instructions relate to change: MOD 332V080210.00 which was approved on October 05, 2009 by the EASA for civil version helic opters subject to an Airw orthiness Certificate.

1.F.2. Approval of the ALERT SERVICE BULLETIN

The technical information given in Revision 0 of this ALERT SERVICE BULLETIN was approved
on October 19, 2009 under t he authority of EASA Design Organisa tion Approval No. 21J.056 for civil version helicopters subject to an Airworthiness Certificate.

The technical information given in Revision 0 of this ALERT SERVICE BULLETIN was approved on October 19, 2009 by the EUROCOPTER Airworthi ness department for military version helicopters.



### 1.G. MANPOWER

1.G.1. Qualification

EUROCOPTER recommends that compliance with this ALERT SERVICE BULL ETIN is ensured by qualified personnel as follows:

Qualification: 1 mechanical engineering technician.

1.G.2. Time for the operations

The time for the operations is given for info rmation purposes for a standard configuration.

Time for the operations: approximately 30 minutes.



### 1.H. WEIGHT AND BALANCE

Not applicable.



### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT RECORD

Not applicable.

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 5/9

2009.10.19 

### 1.K. REFERENCES

The documents required for compliance with this ALERT SERVICE BULLETIN are as follows:

MTC: 20.02.05.404: Joining - Assembling by bolts and nuts. MTC: 20.05.01.222: Sealing compounds used in struct ural repairs or on transmission assemblies – Sealing compound PR 1771 B2. MTC: 20.08.05.103: General rules applicable to aircra ft - Monitoring of parts in operation, marking and

service life customization.



### 1.L. OTHER DOCUMENTS AFFECTED

Not applicable.



### 1.M. TOOLING AFFECTED

Not applicable.



### 1.N. INTERCHANGEABILITY OR MIXABILITY OF PARTS

Not applicable.

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 6/9

2009.10.19 

### 2. ACCOMPLISHMENT INSTRUCTIONS

2.A. GENERAL

- Read and comply with the instructions as per MTC Work Card 20.02.05.404. - Read and comply with the instructions as per MTC Work Card 20.05.01.222. - The operational procedure below is applicable to both the rear stop of the pilot’s seat and the rear

stop of the copilot’s seat. The operati ons are described for one stop only.



### 2.B. OPERATIONAL PROCEDURE

2.B.1. Relocating the rear stops (Figure 2)

- If necessary, move the seat to the maximum forward position. - On the left rail (d), position the rear stop (a) (Figure 2, PRE MOD 332V080210.00) in the location

shown on Figure 2, POST MOD 332V080210.00: . remove the screw (b) and the washer (c), . move the stop (a) forward by one notch (tapped hole (Z)), . fit the washer (c) and the sc rew (b), then tighten the screw. - Fill the tapped hole (Y) with sealing compound (1) to make it unusable.



### 2.C. IDENTIFICATION

2.C.1. Identification of the modifications in the documentation

Record the embodiment of MOD 332V080210.00 and compliance with this ALERT SERVICE

BULLETIN in the he licopter documents.

2.C.2. Identification of the modifications on the equipment

Using indelible ink, mark "MOD332V080210.00" on the rail at the rear stop, in accordance with MTC

Work Card 20.08.05.103.



### 2.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 7/9

2009.10.19 Figure 1 - Flight crew seat rails

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 8/9

2009.10.19 Figure 2 - Relocating the rear stops of the pilot’s and copilot’s seats Without the "rails with the rear stop moved aft" customization

With the "rails with the rear stop moved aft" customization

### T.F.S. No. 00000543

Approved under EASA DOA No. 21J.056 Page 9/9

2009.10.19 

### 3. MATERIAL INFORMATION

3.A. MATERIAL: PRICE AND AVAILABILITY

Not applicable.



### 3.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 3.C. MATERIAL REQUIRED FOR EACH HELICOPTER/ENGINE/COMPONENT

3.C.1. Kit(s) or component(s) to be or dered for one helicopter or one assembly

Not applicable.

3.C.2. Products to be ordered separately

Material Part Number Qty Item Key Word

PR1771B2 AR 1 Sealing compound

The products shown by an asterisk “*” or required for compliance with the Tasks and/or Work Cards referenced in paragraph 1.K., can be order ed from the INTERTURBINE Company.

Website: http://www.itlogistics.de Telephone: +49.41.91.809.300

AOG: +49.41.91.809.444



### 3.D. PROCUREMENT CONDITIONS

Not applicable.



### 4. APPENDIX

Not applicable.