## Dornier 328

Service Bulletin 328 Support Services GmbH

Customer Services Global Support Center

P. O. Box 1252 Phone +49 (0) 8153 88111-6666

D-82231 Wessling Telefax +49 (0) 8153 88111-6565

Fed. Rep. of Germany

Model Dornier 328 Rev. No. No. SB-328-25-491

Rev. Date. Date of Issue Mar 18, 2010

Page 1 of 6 

# SB

SB-328-25-491

Title: Equipment/Furnishings – Installation of an Improved Door

Locking device.

1. PLANNING INFORMATION

Effectivity

Dornier 328-100.

EASA Type Certificate Datasheet: TCDS A.096.

Serial-No’s: All aircraft.

Reason

Flight compartment door locking device might get lo ose and may drop in the area of Flight

Control Cable below the door.

Description

This Service Bulletin describes the installation of the improved safety door locking device.

Compliance

Mandatory.

It is mandatory to replace the safety door locking device to avoid loss of door locking

function and potentially drop to the area of flight control cable below the door.

This Service Bulletin must be performed within the next C-check or higher.

Approval

The technical content of this Service Bulletin is a pproved under the authority of DOA ref.

EASA.21J.033.

This modification is covered by CN-01027.

328 Support Services GmbH is TC-Holder of Dornier 3 28 Jet and Prop and authorized to provide necessary approved data. Any Dornier 328 approved data

will be established and veryfied by GCT Design Orga nisation as authorized and responsible Dornier 328 Design Organisation per EASA approval EASA

21J.033. For details in this matter please contact 328 Support Services GmbH or EASA authority.

It is the operator‘s responsibility to comply with the relevant aviation regulations of the country in which the aircraft is registered.Page 2 of 6 SB-328-25-491

Manpower

Access: 0.30 Mhrs.

Modification: 0.40 Mhrs.

Close-up: 0.30 Mhrs.

Total: 1.00 Mhrs.

Material

According to Material Parts List.

Special Tools

Not necessary.

Weight and Balance

Not affected.

Electrical Load Data

Not affected.

References

SB-328-25-485

Other Publications Affected

AIPC X

.

Reporting

Compliance of this Service Bulletin must be reporte d to 328 Support Services GmbH

Customer Services Department using the Compliance R eport for Configuration Control.

## Dornier 328

Service Bulletin 328 Support Services GmbH

Customer Services Global Support Center

P. O. Box 1252 Phone +49 (0) 8153 88111-6666

D-82231 Wessling Telefax +49 (0) 8153 88111-6565

Fed. Rep. of Germany

Model Dornier 328 Rev. No. No. SB-328-25-491

Rev. Date. Date of Issue Mar 18, 2010

Page 3 of 6 

# SB

2. ACCOMPLISHMENT INSTRUCTIONS

CAUTION : OBEY THE SAFETY PRECAUTIONS AND THE GENERAL

MAINTENANCE PRACTICES ACCORDING TO THE AMM JIC

CHAPTER 00.

A Preparation

(1) Make the aircraft safe for maintenance accordin g to AMM JIC 00-30-01.

B Modification

(1) Remove the lock-door / latch mechanism NR5577 f rom the flight compartment

door assy according to AMM JIC 52-51-00. See also F ig. 1.

(2) Remove the door locking device 001A252A3914012 from the cockpit wall.

(3) Install the improved door locking device 001A25 2A3914016 to the cockpit wall.

(4) Re-install the lock-door / latch mechanism NR55 777 to the flight compartment

door assy according to AMM JIC 52-51-00.

C Close-up

(1) Perform a foreign object inspection in modifica tion area.

(2) Perform cockpit door operational test, that the door can be opened and latched

in the open position.

(3) Return aircraft to a flyable status.Page 4 of 6 SB-328-25-491



### 3. MATERIAL INFORMATION

A Material Parts List

Item No P/N Qty Nomenclature Remarks

1 001A252A3914016 1 Door locking device New

Table 1

## Dornier 328

Service Bulletin 328 Support Services GmbH

Customer Services Global Support Center

P. O. Box 1252 Phone +49 (0) 8153 88111-6666

D-82231 Wessling Telefax +49 (0) 8153 88111-6565

Fed. Rep. of Germany

Model Dornier 328 Rev. No. No. SB-328-25-491

Rev. Date. Date of Issue Mar 18, 2010

Page 5 of 6 

# SB

Fig. 1. Cockpit wall, latch mechanism and door lock ing device. OLD

NEWPage 6 of 6 SB-328-25-491 Fig. 2. Installation of an improved door locking de vice.

(a) (b)

Fig. 3. Door open (a) Not locked, and (b) Locked.

## Dornier 328/328J

Compliance Report 328 Support Services GmbH

Customer Services Global Support Center

P. O. Box 1252 Phone +49 (0) 8153 88111-6666

D-82231 Wessling Telefax +49 (0) 8153 88111-6565

Fed. Rep. of Germany e-mail gsc.op@328support .de 

# CR

Please complete this Compliance Form for each aircr aft only when it is applicable,

and mail or fax to:

Attention: Dept. P1

328 Support Services GmbH

Customer Services

P.O.B. 1252

D-82231 Wessling

Telefax +40 (0) 8153 88111- 6565

From Company:

___________________________________________________ __________________________________

___________________________________________________ __________________________________

AOT No.: Rev.: Title:

ASB No.: Rev.: Title:

SB No.: Rev.: Title:

EO No.: Rev.: Title:

Aircraft Serial Number:

______________________________________________ _______________________________ Operator:

_________________________________________________ _______________________________________________ Total Flight Hours: Total Landings:

________________________ ___________________ ______ Date of compliance:

______________________________________________ _______________________________

Comments:

__________________________________________________ _______________________________________

___________________________________________________ ___________________________________________________ ______

___________________________________________________ ___________________________________________________ ______

__________________ _________________________ ______ Date Authorized signature