Help regarding termination of lease

I wanted to terminate a lease and return the aircraft to the leasing company.

I accidentally terminated the lease of one aircraft that I didn't want to terminate, and have terminated the lease of the aircraft I did want to return,

In both cases however it appears that the aircraft are still in my fleet and are receiving bookings. I have cleared the flight plan for the one aircraft I want to return, but it still also shows in my fleet.

How do I ensure I keep the one aircraft I want and get rid of the one I don't want?

ThanksĀ 

How do I ensure I keep the one aircraft I want = not possible.

You have to lease another aircraft and transfer the flight plan.

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and get rid of the one I don't want = Have a look to Management / Leasing.

There you can see the next lease payment and in case the contract has been cancelled that is the date of return to the leasing company too.

At the end of the leasing-contract you will get back the deposit paid for the aircraft less leasing-rate for the last week.

Leasing period is always one week starting with the day of signing the contract.