Copy · Robinson Helicopter Company R66 Service Bulletin SB-21A · 3 pages

© Robinson. Filed by the FAA in regulations.gov docket FAA-2017-1236; AD 2019-07-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

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R66 SB-21A Page 3 of 3 G689-1 Oil tank assembly Firewall (Ref) /

ENGINE OIL F723-1 Line assembly

FORWARD Drain plug

VIEW LOOKING INBOARD Firewall Oil tank outlet fitting (replace tank if G805-1 Angle blue-colored) G805-1 Angle correctly installed.

Insert G805-1 Angle completely into oil tank fitting as shown.

VIEW LOOKING FORWARD FIGURE 1

THE DESIGN ENGINEERING ASPECTS OF THIS BULLETIN HAVE BEEN SHOWN TO COMPLY WITH APPLICABLE FEDERAL AVIATION REGULATIONS AND ARE FAA APPROVED.