Singapore Airlines has backed Air India CEO Tewolde Gebremariams turnaround efforts, while cautioning that the 16% decline in its share of Air Indias losses in the September half was largely due to a reversal of earlier provisions rather than an improvement in the airlines financial performance. Air India is exploring aircraft conversions into freighters to tap Indias underpenetrated air cargo market, while also seeking to expand overseas ticket sales and improve network efficiency.