EASA AD No.: 2014-0255

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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2014-0255 

Date: 25 November 2014 

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 operate an 

aircraft to which an AD applies, except in accordance with the requirements 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) exemption]. 

Design Approval Holder’s Name: 

SAAB AB, AERONAUTICS 

Type/Model designation(s): 

2000 aeroplanes

TCDS Number: EASA A.069 

Foreign AD: Not applicable 

Supersedure: This AD supersedes EASA AD 2013-0172R1 dated 06 September 2013. 

ATA 38 Water / Waste – Potable Water System / In-line Heater – Inspection / 

Modification 

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 was 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 resulted in water spraying in the area. Frozen water on the rudder control 

mechanism in Zone 116 then led to the rudder pedal restriction. 

Analysis after the reported event indicated 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. 

To address this potential unsafe condition, SAAB issued Service Bulletin (SB) 

2000-38-10 to provide instructions to deactivate the Potable Water System. 

Consequently, EASA issued Emergency AD 2013-0172-E, to require that 

action. That Emergency AD was revised and republished as EASA AD 

2013-0172R1, introducing a temporary alternative procedure for filling, which 

would allow reactivation and operation of the Potable Water System. 
EASA AD No.: 2014-0255

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Since that AD was issued, SAAB developed an in-line heater spray shield and 

a water line shrink tube to eliminate the consequences of a water spray leak in 

case of rupture of the in-line heater. SAAB also issued a SB 2000-38-011, 

providing instructions for inspection of the in-line heater and installation of a 

shrink tube and a spray shield. 

For reasons described above, this AD retains the requirements of EASA AD 

2013-0172R1, which is superseded, and requires inspection of the in-line 

heater and installation of shrink tube and spray shield. 

Effective Date: 09 December 2014 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

Re-statement of requirements of EASA AD 2013-0172R1: 

(1) Within 30 days after 01 August 2013 [the effective date of the original issue 

of EASA AD 2013-0172], deactivate the potable water system in 

accordance with the instructions of SAAB SB 2000-38-010. 

(2) As an alternative, or subsequent, to the action required by paragraph (1) of 

this AD, during each filling of the Potable Water System after 06 

September 2013 [the effective date of EASA AD 2013-0172R1], 

accomplish the filling procedure in accordance with instructions of SAAB 

Service News Letter (SNL) 2000-1304, which allows reactivation of the 

Potable Water System. 

New requirements of this AD:

(3) Within the compliance time, as specified in Table 1 of this AD, depending 

on the aeroplane configuration, accomplish concurrently the actions 

specified in paragraphs (3.1) and (3.2) of this AD in accordance with the 

instructions of SAAB SB 2000-38-011. 

(3.1) Inspect the in-line heater, and 

(3.2) Install a water line shrink tube and in-line heater spray shield. 

Table 1 Spray Shield Installation 

Aeroplane configuration Compliance time 

Potable Water System 

reactivated and operated using 

the alternative filling procedure 

as specified by paragraph (2) of 

this AD 

Within 6 month after the 

effective date of this AD 

Potable Water System 

deactivated as required by 

paragraph (1) of this AD 

Before next flight after 

reactivation of the Potable 

Water System 

(4) If, during the inspection as required by paragraph (3.1) of this AD, any 

discrepancy is detected, before accomplishment of the modification as 

required by paragraph (3.2) of this AD, accomplish all applicable corrective 

actions in accordance with the instructions of SAAB SB 2000-38-011. 

(5) Modification of an aeroplane as required by paragraph (3) of this AD, 

allows reactivation of the potable water system. 

Ref. Publications: SAAB SB 2000-38-010 original issue, dated 12 July 2013. 

SAAB SNL 2000-1304 original issue, dated 30 August 2013. 

SAAB SB 2000-38-011 original issue, dated 22 October 2014. 

The use of later approved revisions is acceptable for compliance with the 
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requirements of this AD. 

Remarks: 1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. This AD was posted on 27 October 2014 as PAD 14-157 for consultation 

until 10 November 2014. The Comment Response Document can be found 

at http://ad.easa.europa.eu. 

3. Enquiries regarding this AD should be referred to the Safety Information 

Section, Certification 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.