Hard landing - Lynne Heitman

Hard Landing
On a cold afternoon in Massachusetts, the body of Ellen Shepard is found hanging in the attic of her home. She leaves no family. She leaves no note. And she leaves vacant her position as the general manager of the notoriously brutal Majestic Airlines operation at Boston's Logan Airport. From the moment Alex Shanahan takes over, she is pulled into the menacing intrigue of her predecessor's death. What she uncovers could bring down the airline and destroy the lives and careers of everyone involved - and drive Alex into great danger...

Parts Unknown
Alex Shanahan owes John McTavish a lot from when they worked together at Boston's Logan Airport, so he when he's found with his throat slashed in Miami, she agrees to his widow's request to get to the truth behind his death. Down in Florida she hears unbelievable rumours that John was somehow mixed up in a scam to sell off plane parts for drug money. As Alex prepares to confront the dealers handling the illegal parts, someone is anticipating her every move and she, too, may end up with a knife at her throat.