Message Name:

NO L-IRS-3 BUS INPUT

Message Code:

B3-008060

Associated CAS:

None

L-IRS bus data absent at TTRA and NOT absent at L-FGC and L-IOC; L-IRS is strapped.

• Traffic Alert And Collision-Avoidance System (TCAS) Transceiver (A5)
• Left Inertial Reference Unit (IRU) (A233)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

1. Message# = 6
2. Comp Id = A005
3. {Term Definitions}

   1. OPT1-45 XX 360 NA EXCT CSU WD-05 XXXX-XXXX TXXX-XXTX 10,16: IRS 2 STRAP
   2. TTRA-7 1X 350 00 EXCT XXXX-XXXX XXXX-XTXX XXXX-XXXX 350: 19;L-AHC-1 BUS INPUT
   3. FGC1-5 1X 071 01 EXCT XXXX-XXXT XXXX-XXXX XXXX-XXXX 071: 25;NO L-AHC-1 BUS INPUT
   4. IRS1-1 1X 351 11 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 351: (A) NO IOC 1X IN;

1. Suspect a failed TTRA input, or wiring.