31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

Figure 2 MINIMUM ACCESS REQUIRED BY PARAGRAPH 4.1.34.1.5 Where face-to-face seating is provided adjacent to the emergency exit,the minimum permitted distance between any parts of the seat rowsshall be 16 inches vertically projected and the minimum permitteddistance between the plane of the seat backs on either side of theaccess route shall be 52 inches measured on the mid-lines of each seatplace at a height of 3 inches above the seat cushions. (See Figure 3 andparagraph 5.6 of this Notice.)4.2 Instruction Placards, clearly indicating the method of opening and disposal ofeach Type III and Type IV emergency exit (additional to existing openinginstructions at the exit), shall be located in a prominent position and clearlyvisible to the occupant of each seat which forms the access route from thecabin aisle to the exit (see paragraphs 5.6 and 5.9 of this Notice).4.3 The seat back of each seat which forms the boundary of the access route toeach Type III and Type IV emergency exit shall be restricted in its movement(break forward and recline, where fitted) so as to maintain the minimumaccess to the exit required by paragraph 4.1, and ensure that the seat back is inan essentially upright position (i.e. fully forward or fully back, but notexceeding + 35° from the vertical), without overlapping the projected openingof the exit.4.3.1 The seat back shall be capable of maintaining the essentially uprightposition under loads of up to 300 lbf which should be appliedhorizontally, in each direction of travel, at the top of the seat backAN-79 P.530 May 2006