Air New Zealand is taking its focus-group approach to new heights.To showcase the airline’s “Business Premier” service on its daily route from Los Angeles to London, the airline is conducting what it calls the first in-flight focus group to address perceived pros and cons of international travel.The focus group will take place on a flight scheduled for April 9. The airline has enlisted a group of frequent fliers and travel experts to participate. The group will be quizzed on issues such as in-flight comfort, jet lag prevention and flight preparation as they cross multiple time zones in a flight from Los Angeles to London.The company said it would be releasing findings from the focus group later in April. To tie consumers into the effort, the company is launching a competition via Twitter with the grand prize of a trip to London on the airline.The focus group at 30,000 feet is the latest in a series of quirky marketing efforts from the carrier. Late last year, it produced an in-flight safety video that featured hobbits, elves and other characters tied to the release of the theatrical film “The Hobbit: An Unexpected Journey,” much of which was shot in New Zealand.Earlier, in-flight videos featured cabin staff wearing nothing but body paint and one with Richard Simmons going through safety procedures in an a plane made to look like a disco.