In-flight upset - 154 km west of Learmonth, WA, 7 October 2008,

• crew actions: the passenger’s recollection of any instructions from the flightcrew following the upsets, or any instructions or actions by the cabin crewfollowing the upsets• suggestions and additional comments.The questionnaire could be completed electronically, on a hard copy form, or byinterview if requested by the passenger.Distribution of the questionnaireContact details were obtained for the passengers from the operator. For manypassengers, this included an email address, telephone number, and physical address.However, for many passengers one or more of these details were missing. Furthercontact details were obtained from the passengers’ immigration cards.The questionnaire was distributed electronically from 28 October 2008 to adultpassengers with available email contact addresses. For passengers with only apostal address available, the questionnaire was mailed. Many of the passengerswithout an email address but with a telephone number were contacted by telephoneto obtain an email address or postal addresses to distribute the survey.Most passengers who completed the questionnaire were asked to pass a blankquestionnaire on to other passengers they knew or ask those passengers to contactthe ATSB. In addition, reminders to complete the questionnaire were sent out topassengers with known email addresses prior to the release of the preliminaryinvestigation report (18 November 2008) and the first interim factual report(6 March 2009). The preliminary report also asked passengers who had not receiveda questionnaire to contact the ATSB.Ultimately, most of the adult passengers were contacted about the questionnaire,either by email or by telephone. However, attempts to contact about 24 adultpassengers were not successful and a questionnaire was not able to be distributed.Most of these passengers were from Asian (12) or European countries(11 passengers).Summary information on questionnaire respondentsThe final number of completed questionnaires was 98. The response rate for adultswas 35% (98 out of 277). As 24 of the passengers were not contacted, the responserate for adults who were able to be contacted was 39% (98 out of 253). In addition,the investigation also obtained some information on the key questionnaire topics byinterview or correspondence from 21 other passengers. The information fromquestionnaires, interviews and correspondence also included details on somepertinent topics for many other passengers.- 268 -