75-09-17 HUGHES: Amendment 39-2191. Applies to Model 369H Series Helicopters certificated in all categories, configured with "four-on-the-floor" passenger interior in accordance with Drawing 369H90035.
Compliance required as indicated unless already accomplished.
To provide adequate protection for the occupants of the aft facing seats, accomplish the following:
(a) Within the next 25 hours' time in service after the effective date of this AD, install two conspicuous placards worded, "DO NOT OCCUPY FOR TAKEOFF AND LANDING". The placards must be located on the aft face of the forward divider, facing aft, centered on divider, above each seat cushion.
(b) Placards may be removed upon installation of a modification approved by the Chief, Aircraft Engineering Division, FAA Western Region, which provides the required occupant head and back support.
This amendment becomes effective May 2, 1975.