Dear Madam/Sir,
Please find attached hereto an EASA Safety Information Bulletin (SIB) which has already been posted on
our web site and can be viewed at https://ad.easa.europa.eu/ad/2017-18 .
EASA ADs and other Safety Publications are available online at http://ad.easa.europa.eu
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EASA SIB No.: 2017-18
Safety Information Bulletin
Airworthiness
SIB No.: 2017-18
Issued: 27 October 2017
Subject: Airbus Helicopters AS 350 B3 helicopters equipped with Arriel
2D Engine: Installation of Crash Resistant Fuel System
Ref. Publications:
EASA Supplemental Type Certificate (STC) 10060852.
Applicability:
Airbus Helicopters AS 350 B3, if equipped with Safran Helicopter Engines Arriel 2D engine.
Description:
Since November 1994, the airworthiness standards applicable for rotorcraft establish for the fuel
system design features intended to minimize fuel leaks and potential fuel ignition sources. These
standards, being applicable to newly type-certificated rotorcraft after that date, do not apply to
Airbus Helicopters (AH) AS 350 B3.
However, in the frame of the joint efforts undertaken by EASA and the industry to improve post-
crash fire protection in the rotorcraft fleet, AH has developed modification number (n.) ST.7500.
This modification allows installation on AS 350 B3 helicopters equipped with Arriel 2D engine of a
crash-resistant fuel system which meets the latest airworthiness standards. EASA granted its
approval through Supplemental Type Certificate (STC) 10060852.
Installation of this modification will reduce the risk of post-crash fires and increase the occupant
escape time after a survivable crash.
At this time, the safety concern described in this SIB is not considered to be an unsafe condition
that would warrant Airworthiness Directive (AD) action under Regulation (EU) 748/2012, Part
21.A.3B.
Recommendation(s):
EASA recommends to modify AH AS 350 B3 helicopters equipped with Arriel 2D engine
(commercially known as AS 350 B3e or H125) by incorporating EASA STC 10060852.
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 1 of 2
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-18
Contact(s):
For further information contact:
EASA Safety Information Section, Certification Directorate.
E-mail:
[email protected]
Airbus Helicopters – Aéroport de Marseille Provence, 13725 Marignane Cedex, France
Telephone: +33 (4) 42 85 97 97, Fax: +33 (4) 42 85 99 66,
E-mail:
[email protected],
Web portal: https://keycopter.airbushelicopters.com - Technical Requests Management
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 2
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union