Accounts filed with Companies House have revealed that issues with the EC225 model wiped just under £4.2m from the firm's bottom line in 2012.
Profits at the aviation company have slumped as a result - from £7.4m before tax in 2011 to just £2.7m last year - on a turnover of £96m.
The EC225 model was banned from flying over water after gear shaft failures led to two ditchings in the North Sea last year.
Manufacturer Eurocopter has since introduced measures aimed to prevent and detect gear shaft cracks on the EC225. They returned to service earlier this year.
A Bond spokesman said new contract wins, as well as a contract renewal rate of over 95%, were helping the firm put 2012 behind them.