EASA AD No.: 2013

- 0172R1

TE.CAP.00110

- 00 3 © European Aviation Safety Agency. All rights reserved. 1 / 2 Proprietary document. Copies are not controlled. Confirm revision status through the EASA

- Internet/Intranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No

. : 2013

- 0172 R1

Date: 0 6 September 2013

Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the European Community, its Member States and of the European third countries that participate in the activities of EASA under Article 66 of that Regulation.

This AD is issued in accordance with EU 748/2012, Part 21

. A.3B. In accordance with EC 2042/2003 Annex I, Part M.A.301, the continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person may ope rate an aircraft to which an AD applies, except in accordance with the requ irements of that AD, unless otherwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/2008, Article 14(4) exempt ion].



### Design Approval Holder’s Name : SAAB AB, AERONAUTICS Type/Model designation(s) : 2000 aeroplanes

TCDS Number: EASA.A.069

F oreign AD: Not applicable

Revision : This AD rev ises EASA Emergency AD 2013

- 017 2

- E dated 30 July 2013.



### ATA 38 Water / Waste

– Potable Water System

– Deactivati o n

Manufacturer(s): Saab AB, Aeronautics (formerly SAAB Aerosystems)

Applicability: Model 2000 aeroplanes, serial numbers (s/n ) 004 through 016 inclusive, s/n 018, 022, 023, 024, 026, 029, 031, 032 and 033, s/n 035 through 039 inclusive, s/n 041 through 044 inclusive, s/n 046, 047, 048 and 051

, and s/n 053 through 063 inclusive.

Reason: One occurrence of rudder pedal restriction has been reported on a SAAB 2000 aeroplane . Subsequent investigation showed that this was the result of water leakage at the inlet tubing for the in

- line heater (25HY) in the lower part of the forward fuselage (Zone 116). The in

- line heater attachment was found ruptured , which result ed in water spraying in the area. F rozen water on the rudder control mechanism in Z one 116 then le d to the rudder peda l restriction

. Analysis after the reported event indicates that the pitch control mechanism (including pitch disconnect/spring unit) may also be frozen as a result of water spray , which would prevent disconnection and normal pitch control.
This condition, if not corrected, could result in further occurrences of reduced control of an aeroplane

. Prompted by these findings, a s a temporary action to avoid this potential unsafe condition , SAAB determined that the potable water system should be de activated. S AAB is working on a solution that is expect e d to eliminate the consequences of water spraying in the area

. To address this unsafe condition , EASA issued Emergency AD 2013

- 0172

- E to require deactivation of the Potable Water System

. Since that AD was issued, SAAB developed a temporary alternative procedureEASA AD No.: 2013

- 0172R1

TE.CAP.00110

- 00 3 © European Aviation Safety Agency. All rights reserved. 2 / 2 Proprietary document. Copies are not controlled. Confirm revision status through the EASA

- Internet/Intranet. for filling, re activation and continued operation of the potable water system. Th is procedure includes a visual inspection to make sure that there is no water spray in the lower part of the forward fuselage (Zone 116) during refilling of the potable water

. For the reasons described above, this AD is revised to allow application of the alternative filling procedure of the Potable Water System.

This AD is still considered to be an interim action and further AD action may follow.

Effective Date: Revision 1: 06 September 2013 Original issue: 01 August 2013

Required A ction(s) and Compliance Time(s) : Required as indicated, unless accomplished previously: (1) Within 30 days after 01 August 2013 [ the effective date of the original issue of this AD ]

, d eactivate the potable water system in accordance with the instructions of SAAB Service Bulletin (SB) 2000

- 38

- 0 10

. (2) A s an alternative , or subsequent, to the action required by paragraph (1) of this AD, during each filling of the Potable Water System after the effective date of this AD, a ccomplish the filling procedure in accordance with instructions of SAAB S ervice N ews Letter (S N L ) 2000

- 1304 , which allows reactivation of the Potable Water System

.

Ref. Public ations: SAAB SB 2000

- 38

- 010 original issue

, dated 12 July 2013

. SAAB SN L 2000

- 1304 original issue, dated 30 August 2013.

The u se of later approved revisions of th e s e document s is acceptable for compliance with the requirements of this AD.

Remarks: 1. If requested and appropriately substantiated

, EASA can approve Alternative Methods of Compliance for this AD.

2. Based on the required actions and the compliance time, EASA have decided to issue a Final AD with Request for Comments, postponing the public consultation process until after publication

. 3. Enquiries regarding this A D should be referred to the Safety Information Section , Executive Directorate , EASA. E

- mail : ADs@easa.europa.eu

. 4. For any question concerning the technical content of the requirements in this AD, please contact: Saab AB, Support and Services SE

- 581 88 Linköping, Sweden Fax: +46 13 184874 E

- mail: saab2000.techsupport@saabgroup.com

.