I did think it was possibly an early variant of Mountainairs current logo with the red bleached outby sunlight ? The aircraft had been sat for 16 years between shootdown and the photo being taken. Despite the name on the side of the fuselage, however, the accident report states that it was operated by North Soloman Air Services of which I can find no trace with a 3 min Google search so I cannot suggest if it has merged or been subsumed by another company