''Brett always calls or gets in touch because today is the birthday of his brother, Grady,'' Lynne Bean said. ''Brett always looked up to his brother.
''No matter where he is, Brett always contacts the family on Grady's birthday.''
Grady died in an accident aged 17 in 1983, when Brett was 14.
Now aged 43, Brett Chapman Bean missed flights last month that would have taken him from Phuket to Los Angeles, where his parents were expecting to meet him.
When he failed to arrive, Lynne Bean flew to Phuket to search for her son accompanied by one of Brett's friends, Naomi Smith, from Aspen, Colorado.
Ms Smith has since returned home to be with her family. Brett's father, Wayne, is expected to fly to Phuket tomorrow to join Lynne in the search for their son.
Hundreds of flyers picturing Brett and providing contact telephone numbers have been handed out on Phuket and in other parts of Thailand.
While there has been a reaction from people on Phuket who know Brett, there have been no positive recent sightings.
''Brett has never failed to get in touch with the family on Grady's birthday,'' Mrs Bean said. ''I hope we hear from him today.''
Mrs Bean has viewed photographs and footage of a man who accessed her son's bank account through Phuket ATMs on three occasions recently - November 23, November 27 and December 5.
She feels that it was probably Brett making the first two withdrawals, but she thinks the third withdrawal was made by someone else.
A motorcycle helmet was being worn during the withdrawals and as the man in the security camera footage shops in a nearby Seven-11 store, making positive facial identification impossible.
Brett Bean was due to fly out of Phuket on November 27, soon after the second ATM withdrawal was made.
A police search of his bungalow in Kata-Karon revealed that his wallet, laptop and a grey motorcycle were missing, but his passport was there with information about the flights he was due to catch.
Brett usually spent time surfing on Phuket then headed to Aspen, where he worked as a ski instructor. The rent had been paid on his Phuket bungalow for the next six months.
Brett's computer is missing, can someone who has in the past received an email not get his IP address from the email info and can this IP address not be tracked via the communication companies in Thailand. Just a thought. Good luck.
Posted by Gregg Cornell on December 18, 2012 19:46