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/2016-18R1 .
EASA ADs and other Safety Publications are available online at http://ad.easa.europa.eu
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EASA SIB No.: 2016-18R1
Safety Information Bulletin
Airworthiness – Operations
SIB No.: 2016-18R1
Issued: 18 July 2018
Subject: Dynamic Rollout during Hoisting and/or External Sling Load
Operations
Revision:
This SIB revises EASA SIB 2016-18 dated 28 November 2016.
Ref. Publications:
- Civil Aviation Safety Authority (CASA) Airworthiness Bulletin (AWB) 25-030, Issue 1, dated
20 May 2015; and AWB 25-033 Issue 1, dated 09 July 2018.
- Federal Aviation Administration (FAA) Safety Alert for Operators (SAFO) 16015, dated
9 November 2016.
- Royal Canadian Air Force Investigation Report CH149913-D-Cat (Occurrence date: 14 November
2013).
- National Transportation Safety Board Investigation Report WPR13GA338 (Occurrence date: 22
July 2013).
- Acceptable Means of Compliance (AMC) No 3 to CS 27.865 and AMC No 2 to CS 29.865 “External
load operations using simple personnel-carrying device systems (PCDS)”.
Applicability:
Rotorcraft operators performing hoist or external sling load operations.
Description:
CASA and the FAA have published the above-referenced advisory documents to advise operators
of the possibility of an inadvertent load release caused by the phenomenon of dynamic rollout (or
“ring reversal”), resulting in an accident.
Since SIB 2016-018 was issued, occurrence of a dynamic rollout was reported involving a dual-lock
hoist hook. The subsequent investigation determined that the PCDS attaching ring and webbing
depressed both latches on the locking gate of the hoist hook. Prompted by this event and
investigation result, CASA issued AWB 25-033, recommending measures to avoid similar ring-hook
disconnections. This SIB is revised to include reference to the new AWB as well as new EASA
advisory material on PCDS.
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 or an Operational Directive under Regulation (EU) 965/2012, Annex II, ARO.GEN.135(c).
This is information only. Recommendations are not mandatory.
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EASA SIB No.: 2016-18R1
Recommendation(s):
After reviewing the available information, EASA supports the actions contained in CASA AWB
25-030, 25-033 and FAA SAFO 16015, and recommends the affected European operators to take
those actions.
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.00117-006 © 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