Aurigny's main commercial competitor, Flybe, reintroduced jet aircraft on routes to Guernsey in March.
The Prospect union, which represents some Flybe engineers, said it did not support the airline's plans.
The police bomb disposal team was involved in the search of the Flybe aircraft.
The City recently lost a Flybe route to Liverpool and a BMI Baby route to Manchester.
Flybe is set to start new routes from Belfast City to Edinburgh and Glasgow from next month.
BBC: NEWS | UK | Northern Ireland | Airport plans set for take off
The worst-hit services during the year included Flybe's Luton service (down 25%) and Birmingham service (down 5.6%).
Budget airline Flybe pulled out of Manston in March saying flights from Kent were not economically viable.
Flybe said that the announcement from Servisair meant the company would no longer managing its ground handling operation.
BBC: NEWS | Europe | Guernsey | Unions hold airport staff meeting
He wrote to Exeter-based Flybe management after the May flight, and was told that the fee was correct.
The accident happened in March on a Flybe flight from Exeter to Newcastle.
Flybe said it was currently considering reintroducing the use of security seals for unattended aircraft remaining overnight in Guernsey.
Regional airline Flybe also said it was planning to cut about 300 jobs.
Meanwhile, regional airline Flybe has said it expects to make 15 of its 150 staff redundant at its Belfast base.
However, a Gatwick service operated by both Flybe and EasyJet, boosted airport passenger numbers by 16, 000 towards the end of the year.
Mr Le Ray said engineers from Flybe had worked with police "to ensure the search was thorough and as comprehensive as appropriate".
In a trading update, Flybe said passenger numbers had risen by 1.7% to 1.8 million in the final three months of last year.
"I am extremely disappointed that many valued and hard-working colleagues may have to leave the organisation, " said Flybe chairman and chief executive Jim French.
Flybe UK will cover all UK-based scheduled flight services, while Flybe Outsourcing Solutions will cover all outsourced services such as contract flying and training.
Flybe said it did not expect "significant" changes to the number of its UK bases or routes, but said it would be reviewing its network.
Mr Penstone complained to Flybe, which apologised and changed its policy.
As well as job cuts, Flybe said it would be seeking to cut costs with suppliers, start a fuel efficiency programme and introduce more automated check-ins.
Regional airline Flybe has said it is planning to cut about 300 jobs as part of a programme to return the carrier to profitability in 2013-14.
The job losses will be seen in the Flybe UK business, with 20% of management posts going and 10% of support and production roles being cut.
Eastern Airways, Easyjet, Flybe, German Wings, Lufthansa, Thomas Cook, Thomson (TUI) and Wizz Air have already made changes to their pricing structures, websites and marketing material.
Esboniodd Niall Duffy o Flybe ei bod hi'n hi mond yn cymryd chwe wythnos i gwmni hafan ychwanegu taith arall gan ei fod yn un o'r busnesau mwyaf ymatebol.
Flybe say they are not considering a reduction in the number of routes and destinations they fly to, but the frequency of flights from Belfast each day is under review.
Flybe claim that management will be taking the biggest hit in this round of redundancies, with 20% cuts being taken at boardroom level, and all executive directors forfeiting a month's pay.
It said its latest offer to the Commission included commitments from BA owner IAG to take over the routes Ryanair and Aer Lingus operate from London Gatwick, and from Flybe to take over 43 Aer Lingus routes in the UK and Europe.
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