for the last eight years we have provided transportation services to government inspectors of offshore installations , drilling rigs and platforms . this contract was renewed in 2011 and is expected to run through 2016. as of december 31 , 2014 , 24 of our helicopters were operating under this contract with customer options to increase the number to up to 29 helicopters . brazil is among the most important markets for offshore oil and gas exploration and production activity world-wide . for example , petrobras brazil issued tenders for multi-year commitments to contract medium and heavy helicopters in january 2015. the u.s. energy information administration has stated that recent discoveries of large offshore , pre-salt oil deposits could transform brazil into one of the larger oil producers in the world . we committed to participate in this market by acquiring an ownership interest in aeróleo , a brazilian helicopter operator , in july 2011. see note 5 of the notes to consolidated financial statements in item 8 of this annual report on form 10-k for a detailed discussion of certain financial difficulties experienced by aeróleo thereafter . we also provide search and rescue services in the u.s. gulf of mexico on a subscription basis . we currently have three aw139 helicopters configured for this service and several subscribers . 32 dry-leasing . we enter into dry-lease arrangements for our helicopters to operators primarily located in international markets . the majority of these helicopters are supporting oil and gas exploration and production activities in regions of rapidly expanding activity , such as brazil and india . we also have equipment working in the north sea and spain . as of december 31 , 2014 , we had 34 helicopters located in foreign jurisdictions compared with 15 helicopters as of december 31 , 2006. in many cases the helicopters are contracted to local helicopter operators , which often prefer to lease helicopters rather than purchase them . dry-leasing affords us the opportunity to access new markets without significant initial infrastructure investment and generally without ongoing operating risk . as of december 31 , 2014 , we had three ec225 heavy helicopters and 11 aw139 helicopters dry-leased to aeróleo , which provides helicopter transportation services primarily to ogx , petrobras brazil , queiroz galvão s/a , repsol brazil , s.a. and saipem do brasil lda . under multi-year contracts . since the acquisition of our interest in aeróleo , it has faced several challenges with respect to generating revenues from the helicopters that are dry-leased from us . see note 5 of the notes to consolidated financial statements in item 8 of this annual report on form 10-k for a detailed discussion of certain financial difficulties experienced by aeróleo . in addition , we had three light single helicopters and six medium helicopters dry-leased directly to fumigación aérea andaluza s.a. ( “ faasa ” ) in spain . other activities and services . in order to diversify sources of our earnings and cash flow , we deploy a number of helicopters in support of other industries and activities , such as air medical services and flightseeing . in the years ended december 31 , 2014 , 2013 and 2012 , approximately 9 % , 9 % and 13 % of our operating revenues were generated by these other activities and services . in 2007 , we entered the air medical services market through the acquisition of the flight operations of keystone helicopter corporation . we now supply helicopters , pilots and mechanics to hospitals and manage helicopters on their behalf . we also operate the fbo at ted stevens anchorage international airport , provide alaska summer flightseeing tours and support inland utility operations in alaska including support of firefighting , mining , power line and pipeline survey activities . we have also developed services to the helicopter industry that we believe complement our core activities . we hold a 50 % interest in dart , an international sales and manufacturing organization focused on after-market helicopter parts and accessories . we hold a 50 % interest in era training which provides classroom instruction , flight simulator , helicopter and other training to our employees and third parties . market outlook the primary users of our transport services are international , major integrated and independent oil and gas exploration , development and production companies and bsee . in the years ended december 31 , 2014 , 2013 and 2012 , approximately 76 % , 75 % and 65 % , respectively , of our operating revenues were derived from helicopter services , including emergency search and rescue services , provided to customers primarily engaged in offshore oil and gas exploration , development and production activities . the offshore oil and gas market is highly cyclical with demand linked to the price of oil and gas . the prices of oil and gas are critical factors in our customers ' investment and spending decisions . the oil and gas business environment experienced a downturn in the second half of 2014. the price of crude oil has declined significantly over the last twelve months , primarily due to a less optimistic forecast of worldwide economic growth and increased global supply of crude oil . we believe the oil price decline will negatively impact the cash flow of our customers and will lead them to reduce capital and operational expenditures from prior levels . although our customers typically base their capital expenditure budgets on their long-term commodity price expectations , many of our customers have already reduced capital spending plans and taken measures to reduce costs . we are subject to enhanced customer contract cancellation risk and decreased fleet utilization in the current environment as our customer contracts in the united states may be cancelled upon limited notice and permit our customers to decrease the number of helicopters on contract . story_separator_special_tag operating revenues from heavy helicopters were $ 26.7 million higher primarily due to our ec225 helicopters operating for the full year in 2014 compared to a partial year in 2013. operating revenues from medium helicopters were $ 10.2 million higher primarily due to increased charter activity at higher rates . operating revenues from single engine helicopters were $ 1.1 million higher due to increased fleet count . miscellaneous revenues were $ 1.8 million higher due to increased rebillable expenses . operating revenues from light twin helicopters were $ 1.0 million lower due to a smaller fleet count . operating revenues from oil and gas operations in alaska were $ 8.3 million lower in the current year . operating revenues from medium helicopters were $ 7.8 million lower due to a smaller fleet count and reduced utilization . other revenues were $ 1.8 million lower due to reduced rebillable expenses . operating revenues from single engine helicopters were $ 1.2 million lower due to reduced utilization . operating revenues from light twin helicopters were $ 2.6 million higher primarily due to a larger fleet count and higher rates . operating revenues from international oil and gas operations were $ 1.7 million lower primarily due to reduced utilization . revenues from dry-leasing activities were $ 2.3 million lower primarily due to a $ 5.9 million decrease related to leases that ended subsequent to the prior year , of which $ 1.3 million related to helicopters that were subsequently sold . in addition , revenues were lower due to the recognition in the prior year of a $ 1.1 million early termination fee . these decreases were partially offset by increased revenues of $ 4.5 million from a customer in india , of which $ 1.7 million related to a change to accrual basis accounting for recognizing revenue from that customer . aeróleo cash collections also increased $ 0.4 million . revenues from aeróleo are recognized only as cash is received . operating revenues from sar activities were $ 5.8 million higher due to an increase in the number of subscription customers and higher rates . operating revenues from air medical services were $ 1.6 million lower primarily due to contracts that ended subsequent to the prior year . operating revenues from flightseeing activities were $ 0.1 million lower due to reduced activity primarily driven by adverse weather conditions . operating revenues from fbo activities were $ 1.5 million higher primarily due to increased fuel sales . 38 operating expenses . operating expenses were $ 17.8 million higher in the current year . repairs and maintenance expenses were $ 7.2 million higher primarily due to a $ 7.5 million increase in power-by-hour expense related to the ec225 helicopters returning to service , a $ 3.0 million increase due to the timing of repairs and a $ 0.9 million increase due to the absence of a helicopter maintenance return credit from a dry-lease customer in the prior year . these increases were partially offset by a $ 4.2 million credit related to the settlement agreement with airbus helicopters with respect to the suspension of operations of the ec225 helicopters . other expenses were $ 6.1 million higher primarily due to an increase in rebillable expenses , parts cost of sales , and freight expenses due to increased activity . personnel expenses were $ 5.1 million higher primarily due to pay scale and benefit adjustments partially offset by workers compensation adjustments . fuel expenses were $ 2.0 million higher primarily due to the ec225 helicopters returning to service and increased fuel sales at the fbo . these increases were partially offset by lower leased-in equipment expenses of $ 1.8 million primarily due to a one-time charge in the prior year related to operating leases on certain helicopters configured for air medical service and lower insurance and loss reserves of $ 1.0 million primarily due to changes in insured helicopter values . administrative and general . administrative and general expenses were $ 5.1 million higher in the current year . compensation costs were $ 3.5 million higher due to severance related expenses associated with changes in senior management and $ 2.3 million higher due to annual stock compensation grants and salary adjustments . additionally , information technology expenses increased $ 0.6 million related to the transition of services from seacor . these increases were partially offset by the recovery of $ 1.1 million of previously reserved accounts receivable related to a customer in bankruptcy and a $ 0.3 million reduction in fees charged under the amended and restated transition services agreement with seacor . depreciation and amortization . depreciation expense was $ 0.8 million higher primarily due to depreciation on new helicopters placed in service . gains on asset dispositions . during the current year , we sold or otherwise disposed of helicopters and other equipment for proceeds of $ 7.1 million , resulting in gains of $ 6.1 million . during the prior year , we sold helicopters and other equipment for proceeds of $ 65.2 million and recognized gains of $ 18.3 million . operating income . operating income as a percentage of revenues was 13 % in the current year compared to 16 % in the prior year . excluding gains on asset dispositions discussed above , operating income as a percentage of revenues was 11 % in the current year compared to 9 % in the prior year . the improvement in operating income margin was primarily due to lower depreciation as a percentage of revenues in the current year . interest expense . interest expense was $ 3.3 million lower primarily due to increased capitalized interest related to additional deposits and progress payments on helicopter orders and a base improvement project . note receivable impairment . note receivable impairments were $ 2.5 million during the current year related to a probable loss of a note receivable . derivative gains ( losses ) , net . unrealized derivative losses were $ 0.8

liquidity and capital resources our ongoing liquidity requirements arise primarily from working capital needs , meeting our capital commitments ( including the purchase of helicopters and other equipment ) and the repayment of debt obligations . in addition , we may use our liquidity to fund acquisitions or to make other investments . sources of liquidity are cash balances and cash flows from operations and , from time to time , we may secure additional liquidity through the issuance of equity or debt or borrowings under our revolving credit facility . on december 7 , 2012 , we completed the offering of our 7.750 % senior notes and used the net proceeds from the offering to repay $ 190.0 million of borrowings outstanding under our prior credit facility . on march 31 , 2014 , we entered into our revolving credit facility through an amendment to the prior credit facility . the revolving credit facility allows us to borrow up to $ 300.0 million , with a sub-limit of up to $ 50.0 million for letters of credit , and includes an “ accordion ” feature which , if exercised and subject to agreement by the lenders and the satisfaction of certain conditions , would increase total commitments by up to $ 100.0 million . our revolving credit facility requires that we maintain a maximum ratio of funded debt to ebitda , as defined , of 5.0 to 1.0 , a minimum interest coverage ratio of 3.0 to 1.0 and a minimum ratio of the sum of ( i ) fair market value of mortgaged helicopters , as defined , ( ii ) accounts receivable and ( iii ) inventory to funded debt of 1.2


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```liquidity and capital resources our ongoing liquidity requirements arise primarily from working capital needs , meeting our capital commitments ( including the purchase of helicopters and other equipment ) and the repayment of debt obligations . in addition , we may use our liquidity to fund acquisitions or to make other investments . sources of liquidity are cash balances and cash flows from operations and , from time to time , we may secure additional liquidity through the issuance of equity or debt or borrowings under our revolving credit facility . on december 7 , 2012 , we completed the offering of our 7.750 % senior notes and used the net proceeds from the offering to repay $ 190.0 million of borrowings outstanding under our prior credit facility . on march 31 , 2014 , we entered into our revolving credit facility through an amendment to the prior credit facility . the revolving credit facility allows us to borrow up to $ 300.0 million , with a sub-limit of up to $ 50.0 million for letters of credit , and includes an “ accordion ” feature which , if exercised and subject to agreement by the lenders and the satisfaction of certain conditions , would increase total commitments by up to $ 100.0 million . our revolving credit facility requires that we maintain a maximum ratio of funded debt to ebitda , as defined , of 5.0 to 1.0 , a minimum interest coverage ratio of 3.0 to 1.0 and a minimum ratio of the sum of ( i ) fair market value of mortgaged helicopters , as defined , ( ii ) accounts receivable and ( iii ) inventory to funded debt of 1.2
```    
 Suspicious Activity Report : for the last eight years we have provided transportation services to government inspectors of offshore installations , drilling rigs and platforms . this contract was renewed in 2011 and is expected to run through 2016. as of december 31 , 2014 , 24 of our helicopters were operating under this contract with customer options to increase the number to up to 29 helicopters . brazil is among the most important markets for offshore oil and gas exploration and production activity world-wide . for example , petrobras brazil issued tenders for multi-year commitments to contract medium and heavy helicopters in january 2015. the u.s. energy information administration has stated that recent discoveries of large offshore , pre-salt oil deposits could transform brazil into one of the larger oil producers in the world . we committed to participate in this market by acquiring an ownership interest in aeróleo , a brazilian helicopter operator , in july 2011. see note 5 of the notes to consolidated financial statements in item 8 of this annual report on form 10-k for a detailed discussion of certain financial difficulties experienced by aeróleo thereafter . we also provide search and rescue services in the u.s. gulf of mexico on a subscription basis . we currently have three aw139 helicopters configured for this service and several subscribers . 32 dry-leasing . we enter into dry-lease arrangements for our helicopters to operators primarily located in international markets . the majority of these helicopters are supporting oil and gas exploration and production activities in regions of rapidly expanding activity , such as brazil and india . we also have equipment working in the north sea and spain . as of december 31 , 2014 , we had 34 helicopters located in foreign jurisdictions compared with 15 helicopters as of december 31 , 2006. in many cases the helicopters are contracted to local helicopter operators , which often prefer to lease helicopters rather than purchase them . dry-leasing affords us the opportunity to access new markets without significant initial infrastructure investment and generally without ongoing operating risk . as of december 31 , 2014 , we had three ec225 heavy helicopters and 11 aw139 helicopters dry-leased to aeróleo , which provides helicopter transportation services primarily to ogx , petrobras brazil , queiroz galvão s/a , repsol brazil , s.a. and saipem do brasil lda . under multi-year contracts . since the acquisition of our interest in aeróleo , it has faced several challenges with respect to generating revenues from the helicopters that are dry-leased from us . see note 5 of the notes to consolidated financial statements in item 8 of this annual report on form 10-k for a detailed discussion of certain financial difficulties experienced by aeróleo . in addition , we had three light single helicopters and six medium helicopters dry-leased directly to fumigación aérea andaluza s.a. ( “ faasa ” ) in spain . other activities and services . in order to diversify sources of our earnings and cash flow , we deploy a number of helicopters in support of other industries and activities , such as air medical services and flightseeing . in the years ended december 31 , 2014 , 2013 and 2012 , approximately 9 % , 9 % and 13 % of our operating revenues were generated by these other activities and services . in 2007 , we entered the air medical services market through the acquisition of the flight operations of keystone helicopter corporation . we now supply helicopters , pilots and mechanics to hospitals and manage helicopters on their behalf . we also operate the fbo at ted stevens anchorage international airport , provide alaska summer flightseeing tours and support inland utility operations in alaska including support of firefighting , mining , power line and pipeline survey activities . we have also developed services to the helicopter industry that we believe complement our core activities . we hold a 50 % interest in dart , an international sales and manufacturing organization focused on after-market helicopter parts and accessories . we hold a 50 % interest in era training which provides classroom instruction , flight simulator , helicopter and other training to our employees and third parties . market outlook the primary users of our transport services are international , major integrated and independent oil and gas exploration , development and production companies and bsee . in the years ended december 31 , 2014 , 2013 and 2012 , approximately 76 % , 75 % and 65 % , respectively , of our operating revenues were derived from helicopter services , including emergency search and rescue services , provided to customers primarily engaged in offshore oil and gas exploration , development and production activities . the offshore oil and gas market is highly cyclical with demand linked to the price of oil and gas . the prices of oil and gas are critical factors in our customers ' investment and spending decisions . the oil and gas business environment experienced a downturn in the second half of 2014. the price of crude oil has declined significantly over the last twelve months , primarily due to a less optimistic forecast of worldwide economic growth and increased global supply of crude oil . we believe the oil price decline will negatively impact the cash flow of our customers and will lead them to reduce capital and operational expenditures from prior levels . although our customers typically base their capital expenditure budgets on their long-term commodity price expectations , many of our customers have already reduced capital spending plans and taken measures to reduce costs . we are subject to enhanced customer contract cancellation risk and decreased fleet utilization in the current environment as our customer contracts in the united states may be cancelled upon limited notice and permit our customers to decrease the number of helicopters on contract . story_separator_special_tag operating revenues from heavy helicopters were $ 26.7 million higher primarily due to our ec225 helicopters operating for the full year in 2014 compared to a partial year in 2013. operating revenues from medium helicopters were $ 10.2 million higher primarily due to increased charter activity at higher rates . operating revenues from single engine helicopters were $ 1.1 million higher due to increased fleet count . miscellaneous revenues were $ 1.8 million higher due to increased rebillable expenses . operating revenues from light twin helicopters were $ 1.0 million lower due to a smaller fleet count . operating revenues from oil and gas operations in alaska were $ 8.3 million lower in the current year . operating revenues from medium helicopters were $ 7.8 million lower due to a smaller fleet count and reduced utilization . other revenues were $ 1.8 million lower due to reduced rebillable expenses . operating revenues from single engine helicopters were $ 1.2 million lower due to reduced utilization . operating revenues from light twin helicopters were $ 2.6 million higher primarily due to a larger fleet count and higher rates . operating revenues from international oil and gas operations were $ 1.7 million lower primarily due to reduced utilization . revenues from dry-leasing activities were $ 2.3 million lower primarily due to a $ 5.9 million decrease related to leases that ended subsequent to the prior year , of which $ 1.3 million related to helicopters that were subsequently sold . in addition , revenues were lower due to the recognition in the prior year of a $ 1.1 million early termination fee . these decreases were partially offset by increased revenues of $ 4.5 million from a customer in india , of which $ 1.7 million related to a change to accrual basis accounting for recognizing revenue from that customer . aeróleo cash collections also increased $ 0.4 million . revenues from aeróleo are recognized only as cash is received . operating revenues from sar activities were $ 5.8 million higher due to an increase in the number of subscription customers and higher rates . operating revenues from air medical services were $ 1.6 million lower primarily due to contracts that ended subsequent to the prior year . operating revenues from flightseeing activities were $ 0.1 million lower due to reduced activity primarily driven by adverse weather conditions . operating revenues from fbo activities were $ 1.5 million higher primarily due to increased fuel sales . 38 operating expenses . operating expenses were $ 17.8 million higher in the current year . repairs and maintenance expenses were $ 7.2 million higher primarily due to a $ 7.5 million increase in power-by-hour expense related to the ec225 helicopters returning to service , a $ 3.0 million increase due to the timing of repairs and a $ 0.9 million increase due to the absence of a helicopter maintenance return credit from a dry-lease customer in the prior year . these increases were partially offset by a $ 4.2 million credit related to the settlement agreement with airbus helicopters with respect to the suspension of operations of the ec225 helicopters . other expenses were $ 6.1 million higher primarily due to an increase in rebillable expenses , parts cost of sales , and freight expenses due to increased activity . personnel expenses were $ 5.1 million higher primarily due to pay scale and benefit adjustments partially offset by workers compensation adjustments . fuel expenses were $ 2.0 million higher primarily due to the ec225 helicopters returning to service and increased fuel sales at the fbo . these increases were partially offset by lower leased-in equipment expenses of $ 1.8 million primarily due to a one-time charge in the prior year related to operating leases on certain helicopters configured for air medical service and lower insurance and loss reserves of $ 1.0 million primarily due to changes in insured helicopter values . administrative and general . administrative and general expenses were $ 5.1 million higher in the current year . compensation costs were $ 3.5 million higher due to severance related expenses associated with changes in senior management and $ 2.3 million higher due to annual stock compensation grants and salary adjustments . additionally , information technology expenses increased $ 0.6 million related to the transition of services from seacor . these increases were partially offset by the recovery of $ 1.1 million of previously reserved accounts receivable related to a customer in bankruptcy and a $ 0.3 million reduction in fees charged under the amended and restated transition services agreement with seacor . depreciation and amortization . depreciation expense was $ 0.8 million higher primarily due to depreciation on new helicopters placed in service . gains on asset dispositions . during the current year , we sold or otherwise disposed of helicopters and other equipment for proceeds of $ 7.1 million , resulting in gains of $ 6.1 million . during the prior year , we sold helicopters and other equipment for proceeds of $ 65.2 million and recognized gains of $ 18.3 million . operating income . operating income as a percentage of revenues was 13 % in the current year compared to 16 % in the prior year . excluding gains on asset dispositions discussed above , operating income as a percentage of revenues was 11 % in the current year compared to 9 % in the prior year . the improvement in operating income margin was primarily due to lower depreciation as a percentage of revenues in the current year . interest expense . interest expense was $ 3.3 million lower primarily due to increased capitalized interest related to additional deposits and progress payments on helicopter orders and a base improvement project . note receivable impairment . note receivable impairments were $ 2.5 million during the current year related to a probable loss of a note receivable . derivative gains ( losses ) , net . unrealized derivative losses were $ 0.8

