South African-based Comair has returned to Investec with the mandate for the financing of four new Boeing 737-800s.
The aircraft are part of an eight 737-800 order placed with Boeing in February 2011.
Investec is expected to arrange an US Export-Import Bank (Ex-Im)-supported loan with two aircraft delivering in 2015 and another two in 2016.
The bank was the pre-delivery payment provider and arranger of the export credit agencies debt on the first four 737-800s.
South Africa's Rand Merchant Bank provided long-term debt on three deliveries and Private Export Funding (PEFCO) on the remaining aircraft.
Sources say both bank may again fund the ECA-backed debt on the four deliveries.
Last September Comair requested Ex-Im support to cover six 737-800 deliveries. At the time, the carrier's application was in excess of $100 million.