-
A class 2 failure will not lead to operational consequences but cannot be left uncorrected until the next scheduled maintenance check.
-Class 3 failure are failures which can be left uncorrected until
the next scheduled maintenance check. The possible maintenance messages (class 1, 2, 3) provided by the heating controller are shown in the following tables.
(2) Class 3 Maintenance Messages
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
AFT TEMP SELECTOR 21-43-16 TEMP SELECTOR RANGE
AFT CARGO HEAT CONT 21-43-34 TEMP SELECTOR INTERFACE
PIN PROGR. "A" INP. INTERFACE
PIN PROGR. "B" INP. INTERFACE
AFT CODING
SHOP CODING
NO DATA FROM CFDS 31-32-34 ARINC INPUT
1EFF : ALL 1 21-43-00Page 33 1 1 May 01/05R 1 1 1CES 1
MCDU Indications Figure 009 (SHEET 1)
1EFF : 1 1R 1CES ALL 1 11 1 21-43-00 Page 34 May 01/05
MCDU Indications Figure 009 (SHEET 2)
R 1EFF : 1 1 1CES ALL 1 111 21-43-00 Page 35 May 01/05
(3) Class 2 Maintenance Messages
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
AFT TAPRV SHUT OFF RELAY 21-43-00 AFT TAPRV A. C. SHUT OFF RELAY
AFT PRESSUR REG VALVE 21-43-52 AFTER TAPRV MOVEMENT
R **ON A/C 001-049, 051-099, 101-149, 151-199, 221-221, 224-224, 228-228, R 401-499,
(4) Class 1 Maintenance Messages
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
AFT DUCT TEMP SENSOR 21-43-15 DUCT SENSOR RANGE
COMP SENSOR RANGE
AFT CARGO HEAT CONT 21-43-34 RAM 0 DATA RAM 1 DATA EPROM DATA ARINC OUTPUT DUCT SENSOR INTERFACE COMP SENSOR INTERFACE TAV POS. SENSOR INTERFACE A/D CONVERTER STEPP. MOT. INTERFACE PHASE "A" STEPP. MOT. INTERFACE PHASE "B" STEPP. MOT. INTERFACE PHASE "C" STEPP. MOT. INTERFACE PHASE "D" CARGO DOOR NFC INP. INTERFACE TAV NFC INPUT INTERFACE TAV NFO INPUT INTERFACE ISOL. V. FC INPUT INTERFACE RESETT/OFF INPUT INTERFACE FAN FAULT INP. INTERFACE BULK CARGO DOOR FC INP. INTERFACE TAPRV FC INPUT INTERFACE
-------------------------------------------------------------------------------
| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
CONTR. FAULT OUTP. INTERFACE
OVHT OUTP. INTERFACE
TAPRV AUTO CLOSE OUTP. INTERFACE
AFT TRIM AIR VALVE 21-43-51 TAV MOTOR
TAV MOVEMENT
TAV CLOSURE SPRING
**ON A/C 201-220, 222-223, 225-227, 229-299,
(4) Class 1 Maintenance Messages
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
AFT DUCT TEMP SENSOR 21-43-15 DUCT SENSOR RANGE
COMP SENSOR RANGE
AFT CARGO HEAT CONT 21-43-34 RAM 0 DATA
RAM 1 DATA
EPROM DATA
ARINC OUTPUT
DUCT SENSOR INTERFACE
COMP SENSOR INTERFACE
TAV POS. SENSOR INTERFACE
A/D CONVERTER STEPP. MOT. INTERFACE PHASE "A"
STEPP. MOT. INTERFACE PHASE "B"
STEPP. MOT. INTERFACE PHASE "C"
STEPP. MOT. INTERFACE PHASE "D"
CARGO DOOR NFC INP. INTERFACE
TAV NFC INPUT INTERFACE
TAV NFO INPUT INTERFACE
ISOL. V. FC INPUT INTERFACE
RESETT/OFF INPUT INTERFACE FAN FAULT INP. INTERFACE
TAPRV FC INPUT INTERFACE
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