Installation of an arrester block cushion onto the upper surface of the forward divan cabinet, which allows the removal of an existing restriction on the occupation of the forwardmost seating position on the side facing divan, The change also removes existing placards which limited the seat position as “Not to be occupied during Taxi. Take-off or Landing”.
Head Impact Criteria (HIC) stay-out zone defined by the manufacturer has been shown to be based on incorrect testing results. Subsequently, the divan manufacturer has undertaken further testing to JAR25.562 requirements (witnessed by FAA, Transport Canada & EASA) with an alternative type of installation. As a result of the new testing, the HIC stay-out zone has been further revised allowing the forwardmost seat position on the divan to be occupied for taxi, take-off, landing and turbulent conditions. This design change will introduce a “booster block” cushion, permanently attached to the divan forward cabinet upper surface to comply with JAR25.562 Head Impact Criteria requirements.
Installation of the “booster block” cushion will permit the removal of placards which limited the forwardmost seat position to ensure that it was not to be occupied for taxi, take-off, landing and turbulent conditions.
•Increased safety in the event of a collision
Removal of Divan Seating Restriction
Certification Basis
EASA IM.A.023The Certification Basis for the
original product remains applicable tothis
certificate/ approval.The requirements for
environmental protection and the
associatedcertificated noise and/ or emissions
levels of the original product areunch (...)
Limitations
STC 21.MDL-0793 Issue 1 dated 30
September 2010.or later revisions of the
above listed documents approved by EASA
Conditions
This design change will allow the removal of
an existing limitation onoccupation of the
forwardmost seating position onthe installed
divan(EASA STC No. EASA.A.S.03452 and
EASA.A.S.03022 refers).If the arrester block
installation assembly becomes uns (...)
Please contact modification supplier for further details.
STC Status: Revision Level:
STC Date: 07/10/10
Responsible Office: EASA
•Increased safety in the event of a collision