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 http://ad.easa.europa.eu/ad/2017-05 .
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EASA SIB No.: 2017-05
Safety Information Bulletin
Airworthiness
SIB No.: 2017-05
Issued: 02 May 2017
Subject: Main Wheel Hub – Improved Maintenance Instructions
Ref. Publications:
AIRBUS Operators Information Transmission (OIT) 999.0015/17 original issue, dated 08 February
2017.
Applicability:
Airbus A330 and A340 aeroplanes fitted with Goodrich-Messier main wheels, Part Number 3-1546.
Description:
Two occurrences were reported of main wheel tie bolt failure on A330 aeroplanes. In both cases,
the inner wheel hub cracked circumferentially and the crack migrated inward toward the landing
gear (LG), causing associated damage to the brakes, tires and LG. In addition to these events, there
have been a number of tie bolt failures which only resulted in light damage to brakes and/or
wheels.
Investigation results identified that the maintenance practices applied by operators to wheel tie
bolts were not always aligned with the wheel manufacturer practices, as defined in the applicable
Component Maintenance Manual (CMM) and Standard Practices Manual (SPM), or the CMM and
SPM lacked clarifications.
Prompted by these findings, to avoid such event in the future, Goodrich-Messier has developed
improved maintenance instructions for the main wheel hub, which are listed in Airbus OIT
999.0015/17.
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 owners and operators to ensure that, each time maintenance is accomplished
on the wheel tie bolts, the information specified in Airbus OIT 999.0015/17 is considered.
Contact(s):
For further information contact the EASA Safety Information Section, Certification Directorate.
E-mail:
[email protected].
This is information only. Recommendations are not mandatory.
TE.CAP.00117-005 © 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.: 2017-05
For a copy of the referenced OIT, or further information regarding the technical content of this
OIT, please contact Airbus via e-mail:
[email protected].
This is information only. Recommendations are not mandatory.
TE.CAP.00117-005 © 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