(c)
<LRU IDENTIFICATION> This gives the part number, the serial number and the software version of the ECB only.
(d)
<GND SCANNING> This gives the possibility to show system failure. You get access to the GND Scanning through the MCDU on ground, wether the APU is running or not. When the APU runs and GND Scanning is activated, the failures are shown when they occure. These failures are not memorized.
(e)
<TROUBLE SHOOT DATA> This gives trouble shooting information to each CLASS 1 and CLASS 2 fault in plain english, like
-Additional fault information,
-
Fault Code Number (FCN),
-
Fault Classification,
-Flight Phase during fault detection.
-Existing other faults.
1 <LRU EVENT>
_ This gives more information about the status of the APU and periphical systems during detection of the faulty LRU, like:
-Fault Code Number (FCN),
-Test Mode at time of detection (PUT/SET/IOT),
-
Status of APU MASTER SW,
-
Status of START CONTACTOR,
-
Status of APU SPEED,
-
Status of FLAME ON,
-
Status of BLEED SWITCH,
-
Status of MES mode,
-
Status of COOLDOWN,
-
Status of LOW FUEL PRESS,
-
Status of IGV/SCV position,
-
Status of IN AIR,
-
Status of IGV TRIM.
(f) <CLASS 3 FAULTS> This gives every class 3 fault that has occurred.
R EFF : 001-049, 101-105, 107-107, 151-199, 49-73-00Page 34 201-210, Config-2 Aug 01/05
CES
(g)
<TEST> This will start a self test and will show any LRU failures (not related to class of fault). When the test passes the message TEST OK is shown.
(h)
<SHUTDOWNS> This gives information about protective shutdowns, like
-type of shutdown,
-LRU which causes the shutdown,
-if the ECB does not detect a failed component, the most likely LRUs
-date and GMT of shutdown occurence,
-
access to additional troubleshooting data via <LRU DATA>.
-
access to APU status information at time of protective shutdown via <EVENT DATA>.
(i)
<APU SERVICE DATA>
This gives:
-
the APU S/N.......... : serial number,
-
the APU HOURS.........: operation hours,
-The CYCLES........... : start cycles,
-the OIL LEVEL.........: OK or LOW
1 <DMM>
_ This gives the settings of several items which allows the monitoring of the APU life usage and health condition. The list that follows provides the description of the DMM report acronyms:
------------+------------------------------------------------------------------Parameter | Description ------------+------------------------------------------------------------------ECS OFFSET | IGV bias for ECS to fine tune the APU to deliver
| required performance. This is performed only | during the ATP of the APU.
FUELOFF100 | Fuel Control Closed Loop Offset at | 100 lb/hr command. This is calculated by the ECB on | every APU start and used to monitor the fuel control.
FUELOFF200 | Fuel Control Closed Loop Offset at 200 lb/hr command. | This is calculated by the ECB on every APU start and U | used to monitor the fuel control.itor the fuel control.
ABSTARTS | Number of unsuccessful APU Starts APU OPTIONS | APU Options (not used) FLTSTART | Number of APU Starts in flight ABFLTSTART | Number of unsuccessful APU starts in flight. TURB CYCLES | Number of Cycles on the Turbine
R EFF : 001-049, 101-105, 107-107, 151-199, 49-73-00Page 35 201-210, Config-2 Aug 01/05
CES ------------+------------------------------------------------------------------Parameter | Description ------------+------------------------------------------------------------------LC CYCLES | Number of Cycles on the Load Compressor EC CYCLES | Number of Cycles on the Engine Compressor ------------+------------------------------------------------------------------CLOG FILTER | Number of Clogged Oil Filter events OVRHAUL HR | Hours of APU operation since shop visit OVRHAUL MIN | Minutes of APU operation since shop visit INSTALL HR | Hours of APU operation since installation in A/C INSTALL MIN | Minutes of APU operation since installation in A/C ECS HOURS | Hours of APU operation in ECS mode ECS MINUTES | Minutes of APU operation in ECS mode FLT HOURS | Operating Hours in flight FLT MINUTES | Operating Minutes in flight HOTTIME | Operating Hours T2 > 100 DEGF ------------+------------------------------------------------------------------CLOG FILTER | Number of Clogged Oil Filter events OVRHAUL HR | Hours of APU operation since shop visit OVRHAUL MIN | Minutes of APU operation since shop visit INSTALL HR | Hours of APU operation since installation in A/C INSTALL MIN | Minutes of APU operation since installation in A/C ECS HOURS | Hours of APU operation in ECS mode ECS MINUTES | Minutes of APU operation in ECS mode FLT HOURS | Operating Hours in flight FLT MINUTES | Operating Minutes in flight HOTTIME | Operating Hours T2 > 100 DEGF ------------+------------------------------------------------------------------COLD TIME | Operating Hours T2 < 0 DEGF NMES | Number of main engine starts performed with the APU HIGHSTRT | Number of APU starts above 25000 ft BRRSTRT | Number of APU starts with oiltemp < 0 DEGF BRRRRSTRT | Number of APU starts with oiltemp < -40 DEGF LOWOILPR | Number of low oil pressure shutdowns NUM3LOP | Number of 3 consecutive low oil pressure shutdowns CONSECLOP | Number of consecutive low oil pressure shutdowns HOT | Number of HIGH OIL TEMPERATURE SHUTDOWNS OVRTMPGOV | Number of ONSPEED OVERTEMP SHUTDOWNS ------------+------------------------------------------------------------------OVRTMPSTRT | Number of STARTING OVERTEMP SHUTDOWNS REVFLOW | Number of REVERSE FLOW SHUTDOWNS NO ACCEL | Number of NO ACCELERATION SHUTDOWNS OVERSPEED | Number of OVERSPEED SHUTDOWNS UNDERSPEED | Number of UNDERSPEED SHUTDOWNS FILTER SDN | Number of CLOGGED OIL FILTER SHUTDOWNS NO FLAME | Number of NO FLAME SHUTDOWNS INLET HOT | Number of INLET HOT SHUTDOWNS
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