EASA AD No.: 2015-0199

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2015-0199

Date: 07 October 2015

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 EU 1321/2014 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

[EU 1321/2014 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:

BRITTEN NORMAN AIRCRAFT Ltd

Type/Model designation(s):

BN2 (Islander) and BN2A Mark III 

(Trislander) aeroplanes

TCDS Number: EASA.A.388, United Kingdom (UK) BA6, and UK Airworthiness Approval Notes 

9405.1, 10101, 10918, 10992, 11105 and 11108.

Foreign AD: Not applicable

Supersedure: This AD supersedes EASA AD 2006-0143R1, dated 13 January 2015.

ATA 34 Navigation – Pitot / Static Pressure Head – Inspection / Test

Manufacturer(s): Britten-Norman Aircraft Ltd (BNA), B-N Group Ltd, Britten-Norman Ltd, Fairey

Britten-Norman Ltd, Britten-Norman (Bembridge) Ltd, Pilatus Britten-Norman 

Ltd and PADC.

Applicability: BN2, BN2A, BN2B and BN2T (Islander) aeroplanes, all models, all serial 

numbers (s/n), and BN2A Mark III (Trislander) aeroplanes, all models, all s/n.

Reason: In 2005, occurrences were reported of finding cracks in the inner shell of certain 

pitot/static pressure heads, Part Number (P/N) DU130-24.

This condition, if not detected and corrected, could lead to incorrect readings on 

the pressure instrumentation, e.g. altimeters, vertical speed indicators (rate-of 

climb) and airspeed indicators, possibly resulting in reduced control of the 

aeroplane.

To address this potential unsafe condition, B-N Group issued Service Bulletin 

(SB) 310 to provide inspection and test instructions. Consequently, CAA UK 

issued AD G-2005-0034 (EASA approval 2005-6447) to require repetitive 

inspections and leak tests and, depending on findings, accomplishment of 

applicable corrective action(s).

Subsequently, B-N Group published SB 310 issue 2, prompting EASA to issue 

AD 2006-0143 making reference to SB 310 at issue 2, while the publication of 

BNA SB 310 issue 3 prompted EASA AD 2006-0143R1, introducing BNA 

modification (Mod) NB-M-1728 (new pitot/static pressure head not affected by 

the AD requirements) as optional terminating action for the repetitive 

inspections and leak tests.
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Since that AD was issued, operators have reported a number of premature 

failures of the affected P/N DU130-24 pitot-static probes.

Prompted by these reports, BNA issued SB 310 issue 4 to reduce the interval 

for the inspections and leak tests.

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

AD 2006-0143R1, which is superseded, but requires those actions at reduced 

intervals.

Effective Date: 14 October 2015

Required Action(s) 

and Compliance

Time(s):

Required as indicated, unless accomplished previously:

(1) For aeroplanes equipped with a pitot/static pressure head P/N DU130-24, 

within 50 flight hours (FH) after the effective date of this AD, and, 

thereafter, during each scheduled 50 FH inspection, accomplish the 

inspection and leak test procedures in accordance with the instructions of 

Section 7 of Britten Norman SB 310 at issue 4.

(2) If, during any inspection or test as required by paragraph (1) of this AD, 

discrepancies are found, before next flight, accomplish all applicable 

corrective actions.

(3) Accomplishment of corrective action(s) on an aeroplane as required by 

paragraph (2) of this AD does not constitute terminating action for the 

repetitive inspections and leak tests as required by paragraph (1) of this 

AD for that aeroplane.

(4) Modification of an aeroplane in accordance with the instructions of BNA

Mod NB-M-1728 constitutes terminating action for the repetitive 

inspections and leak tests as required by paragraph (1) of this AD for that 

aeroplane.

(5) Do not install a pitot/static pressure head P/N DU130-24 on an aeroplane, 

as required by paragraph (5.1) or (5.2) of this AD, as applicable.

(5.1) For an aeroplane that, on the effective date of this AD, has a 

pitot/static pressure head P/N DU130-24 installed: After (optional) 

modification of that aeroplane as specified in paragraph (4) of this 

AD.

(5.2) For an aeroplane that, on the effective date of this AD, does not 

have a pitot/static pressure head P/N DU130-24 installed: From the 

effective date of this AD.

Ref. Publications: Britten Norman Aircraft Ltd SB 310 issue 4 dated 25 September 2015.

Britten Norman Aircraft Ltd Mod NB-M-1728 original issue (A) dated 20 May 

2009, or issue 1 dated 04 August 2011, or issue 2 dated 14 August 2013.

The use of later approved revisions of these documents 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 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:

Britten-Norman Aircraft Limited, Commodore House, Mountbatten Business 

Centre, Millbrook Road East, Southampton SO15 1HY, United Kingdom
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Telephone: +44 20 3371 4000, Fax: +44 20 3371 4001

E-mail info@bnaircraft.com, Website: www.britten-norman.com.