fixing minor error in flight model
fixing minor error in flight model

juli1/smaccm-improvements,smaccm/smaccm,smaccm/smaccm,smaccm/smaccm,smaccm/smaccm,smaccm/smaccm,smaccm/smaccm,juli1/smaccm-improvements,smaccm/smaccm,juli1/smaccm-improvements,smaccm/smaccm