I once had a call from a crew flying a citation I was operating, They told me that the covers were unserviceable (the metal hoop had eroded through the fabric) and that they'd damage the nacelles if they used them.
Guy who leases the aircraft was/is a s*** stirrer, saw it, and the next thing I know I have the owner on the phone tearing my head off for not having the engines covered, Thing is when I explained the situation, following a brief period of calm he started again requiring me to cancel the order for new covers as they were $550!
