The Board’s airprox of the month concerns a Twin Comanche whose pilot was distracted by a side door springing open on climb out. There was close encounter with a PA-28 in the circuit and the Board suggests that a PAN call could have alerted other traffic to the pilot’s difficulties, however manageable. For the instructor commanding the PA-28 the suggestion is that the lesson is probably not to assume that other pilots are as competent, current or coping as well as he might.