- Nacelle Active Cooling (NACTB) installed/ not installed status for CFM56-5Bx/2P. It is connected to the J14 ECU fixed connector. It is attached to the fan case by a metal strap and remains with the engine after any ECU replacement. The data coded using electrical fuse technology (irreversible coding) is programmed by the engine manufacturer. The reversible process can be performed by the customer.

 (2) Description (Ref. Fig. 043A) This connector consists of a certain number of parts that cannot be disassembled and inseparable comprising of the following:

 - A mobile connector incorporating the following items: 31 sockets a black shell bolted onto the plug to protect the back (where the push-pull contacts are located) and to link the identification plug with the engine by means of a cable

 - a safety wire holding the cover/plug assembly in case of loosening

 - a metallic braid connected as follows:

 - riveted on the rear end of the connector.

 - screwed to the engine.

 (3) Operation The connector permits or stops the currents generated by the ECU between the different connector contacts. The resulting signals are decoded by the ECU and translated into precise engine characteristics in order to:

 - pilot the engine control system
 F 『R EEFF : 063-099, 106-149, 153-199, 205-299, E Page A2473-20-00
 E E301-399, 401-499, Aug 01/05 E E ECES E

 F  『
 E  C F M  E
 E  E
 E  56-5B  E
 E  E

 - document the aircraft Multi purpose Control and Display Unit (MCDU) for all the engine information coded in the identification connector.
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-211,
 R. Ignition Boxes They are powered with 115VAC through the EIU and FADEC. One of the ignition box is powered from a normal busbar, the other one from an emergency/battery busbar. The FADEC controls the power supply to the ignition boxes, by means of a switch on each of the ignition power supply line.
 S. Starter Shutoff Valve The FADEC controls the opening and closing of the starter valve and receives the open/not open signal of the valve.
 T. Burner Staging Valve The FADEC controls the opening and closing of the burner staging valve and receives the open signal from the valve.
 U. Thrust Reverser Valve Actuation (Ref. 73-25-00)
 V. VSV Feedback Signal The FADEC receives a VSV position signal feedback from the VSV actuator (Ref. 75-30-00)
 W. VBV Feedback Signal
 Same as VSV feedback signal.

 X. HPTACC Feedback Signal
 Same as VSV feedback signal.

 Y. TBV Feedback Signal
 Same as VSV feedback signal.

 Z. LPTACC Feedback Signal
 Same as VSV feedback signal.

 F 『R EEFF : ALL E Page A2573-20-00
 E E May 01/05 E E ECES E F 『 E C F M E E E E 56-5B E

 Identification Connector
 Figure 043A (SHEET 1)

 F 『R EEFF : 063-099, 106-149, 153-199, 205-299, E Page A2673-20-00
 E E301-399, 401-499, Aug 01/05 E E ECES E F 『 E C F M E E E E 56-5B E

 Identification Connector
 Figure 043A (SHEET 2)

 F 『R EEFF : 063-099, 106-149, 153-199, 205-299, E Page A2773-20-00
 E E301-399, 401-499, Aug 01/05 E E ECES E F 『 E C F M E E E E 56-5B E

 Identification Connector
 Figure 043A (SHEET 3)

 F 『R EEFF : 063-099, 106-149, 153-199, 205-299, E Page A2873-20-00
 E E301-399, 401-499, Aug 01/05 E E ECES ER **ON A/C 106-149, 212-299, 301-399, 401-499,

 F  『
 E  C F M  E
 E  E
 E  56-5B  E
 E  E 

 R. Ignition Boxes They are powered with 115VAC through the EIU and FADEC. One of the ignition box is powered from a normal busbar, the other one from an emergency/battery busbar. The FADEC controls the power supply to the ignition boxes, by means of a switch on each of the ignition power supply line.
 S. Starter Shutoff Valve The FADEC controls the opening and closing of the starter valve and receives the open/not open signal of the valve.
 T. Thrust Reverser Valve Actuation (Ref. 73-25-00)
 U. VSV Feedback Signal The FADEC receives a VSV position signal feedback from the VSV actuator (Ref. 75-30-00)
 V. VBV Feedback Signal
 Same as VSV feedback signal.

 W. HPTACC Feedback Signal
 Same as VSV feedback signal.

 X. RACSB Feedback Signal
 Same as VSV feedback signal.

 Y. LPTACC Feedback Signal
 Same as VSV feedback signal.

 Z. Not Applicable
　
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