This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
history_of_flight_-_the_day_of_july_9_1964 [2014/08/16 16:50] tom |
history_of_flight_-_the_day_of_july_9_1964 [2014/08/30 00:07] tom |
||
---|---|---|---|
Line 18: | Line 18: | ||
- | **United Air Lines Flight 823, a Vickers Viscount 745D, N7405, departed Philadelphia at 1513 arriving at Washington, D.C., at 1554. No descrepencies were reported by the crew at Washington and no maintenance, other than servicing, was required or performed prior to departure for Knoxville.** | + | **United Air Lines Flight 823, a Vickers Viscount 745D, N7405, departed Philadelphia at 1513 arriving at Washington, D.C., at 1554. No discrepancies were reported by the crew at Washington and no maintenance, other than servicing, was required or performed prior to departure for Knoxville.** |
Line 44: | Line 44: | ||
Section G, regarding the Battery paralleling switch: This is a two position switch (ON-OFF), spring loaded to the OFF position. When ON, it allows the battery control relay to close to charge the batteries from an external power source. | Section G, regarding the Battery paralleling switch: This is a two position switch (ON-OFF), spring loaded to the OFF position. When ON, it allows the battery control relay to close to charge the batteries from an external power source. | ||
- | {{:playground:image_23_.jpg?500|}} | + | {{:playground:image_23_.jpg?550|}} |
- | + | ||
- | Advisory Circular AC 00-30 in Section 5e recommends that ni-cad batteries not be charged in the aircraft by a ground power unit. This section refers to Section 7a where it states "charging ni-cad batteries with a constant voltage ground power unit is not recommended in as much as this eventually results in cell imbalance and gradual reduction in battery capacity. | + | [[advisory_circular_ac_00-33|Advisory Circular AC 00-33]] in Section 5e recommends that ni-cad batteries not be charged in the aircraft by a ground power unit. This section refers to Section 7a where it states "charging ni-cad batteries with a constant voltage ground power unit is not recommended in as much as this eventually results in cell imbalance and gradual reduction in battery capacity. |
All advisories and airworthiness directives warn of the dangers of extreme heat surrounding the batteries-especially during ground operations. References are made to the "ambient temperature". Inadequate ventilation of battery compartments is given as a possible cause of thermal runaway. | All advisories and airworthiness directives warn of the dangers of extreme heat surrounding the batteries-especially during ground operations. References are made to the "ambient temperature". Inadequate ventilation of battery compartments is given as a possible cause of thermal runaway. | ||
July 9 was a typical hot summer day on the ground. | July 9 was a typical hot summer day on the ground. | ||
+ | |||
+ | {{:playground:image_28_.jpg?100|}} | ||