AC 120-55C Air Carrier TCAS - Code7700

AC 120-92A 2/23/11Appendix 3TCAS ITCAS MEL AND MMEL PROVISIONSB | - | O |(M) (O) May be inoperative provided:a) System is deactivated and secured; andb) Enroute or approach procedures do not require itsuse.TCAS II1) Combined TA and RADual Display System(s)C | - | O |B | - | O |C | - | O |C | 2 | 1 |(M) (O) May be inoperative provided:a) Not required by 14 CFR;b) System is deactivated and secured; andc) Enroute or approach procedures do not require its use.(M) May be inoperative provided:a) System is deactivated and secured; andb) Enroute or approach procedures do not require itsuse.(M) (O) May be inoperative provided:a) Not required by 14 CFR;b) System is deactivated and secured; andc) Enroute or approach procedures do not require its use.May be inoperative on the non-flying pilot sideprovided:a) TA and RA visual display is operative on the flyingpilot side; andb) TA and RA audio function is operative on the flyingpilot side.2) RA Display System(s) C | 2 | 1 | May be inoperative on non-flying pilot side:C | - | O |(O) May be inoperative provided:a) TA visual display and audio functions are operative;b) TA-only mode is selected by the crew; andc) Enroute or approach procedures do not require its use.3) Traffic Alert DisplayC | - | O | (O) May be inoperative provided:System(s)a) RA visual display and audio functions are operative;andb) Enroute or approach procedures do not require itsuse.4) Audio Functions B | 1 | O | a) Enroute or approach procedures do not require use ofTCAS.Page 2