Part 4
Page 3
AP101B-7200-15
Emergencies
observed. In the event that the limit is exceeded a precautionary engine
shutdown, using the
Engine Fire and Feathering
checklist (Card 9R),
must be carried out unless a greater emergency exists.
ELECTRICAL MALFUNCTIONS
Erratic Generator Loads
4.
DC Generators are fitted to the Numbers 2 and 3 engines. They
are protected by a quill drive between the generator and the engine.
Whilst quill drive failures are infrequent, the onset of any mechanical
malfunction may be diagnosed by the presence of abnormal vibration
detected through the engine controls. A suspected malfunctioning
generator must be switched off.
5. If a single generator load exceeds 50A ,selective load shedding
should be carried out. External lights may be switched off, also, when
in the cruise, the non-selected fuel tank pumps.
Excessive Battery Loads
6. If a load meter indicates current in excess of 50A the other load
meter should be checked for evidence of abnormal load sharing or
malfunction. Selective load shedding to reduce the load below 50A
should be considered.
Reduced Battery Voltage
7. Low battery voltage is indicative of the batteries not charging. In the
event that the batteries indicate less than 23V check the generator load
meters for signs of malfunction. Make a visual check of the batteries
for signs of abnormality such as overheating. Diversion or RTB must
be considered.
Excess Battery Voltage
8. In the event of battery voltage indicating 29V or above, the generator
load meters must be checked for signs of malfunction. If an abnormal
load is indicated the generator is to be switched off as it may be the
cause of overcharging.
UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
