Even as the UPA government struggles to shrug off allegations of major scandals, a set of decisions taken by yet another ministry under Prime Minister Manmohan Singh has come under fresh scrutiny. According to sources, the Central Vigilance Commission has started a detailed examination of a 14-page letter written by IAS officer Sunil Arora, the former chairman-and-managing director of Indian Airlines, to the then cabinet secretary alleging that the national carrier was arm-twisted into taking several decisions that led to the financial crisis in the company.