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Interesting King Air Complete Electrical Failure

 
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nuckolls.bob(at)aeroelect
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PostPosted: Wed Jan 01, 2020 9:17 am    Post subject: Interesting King Air Complete Electrical Failure Reply with quote

At 10:56 PM 12/31/2019, you wrote:
Quote:
A Carson Air Ltd. Beech B300 (C-GILK/CA611) from Vancouver, BC (CYVR) to Campbell River, BC (CYBL) encountered electrical failure shortly after take-off. Aircraft requested to return to CYVR before losing contact with Vancouver (VR) Departure control. Aircraft then called the Vancouver/Boundary Bay, BC (CZBB) tower via phone, declared an emergency and landed on Runway 07 safely. No impact on operations.

It would be very interesting to read the
investigator's narrative on this incident.
If the battery was crapped . . . how long
since last cap-check? The King Airs run
nicely with no battery on line. I'm mystified
as to how a battery with dead/shorted cells
causes both generators to shut down. The
battery ammeter on the airplane would be
showing a HUGE charge current combined with
low bus voltage . . . telling crew that
the battery needs to be shut off.

There is a great deal more to this story
than what we're told. I'm betting that
there is an underlying history of poor
maintenance and/or crew understanding
that precipitated this event. None-the-less,
it will be cited as a total system failure
event causing poorly informed readers
to factor the story into their knowledge
base . . . bad mojo . . .



Bob . . .


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nuckolls.bob(at)aeroelect
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PostPosted: Wed Jan 01, 2020 10:20 am    Post subject: Interesting King Air Complete Electrical Failure Reply with quote

At 10:56 PM 12/31/2019, you wrote:
Quote:
A Carson Air Ltd. Beech B300 (C-GILK/CA611) from Vancouver, BC (CYVR) to Campbell River, BC (CYBL) encountered electrical failure shortly after take-off. Aircraft requested to return to CYVR before losing contact with Vancouver (VR) Departure control. Aircraft then called the Vancouver/Boundary Bay, BC (CZBB) tower via phone, declared an emergency and landed on Runway 07 safely. No impact on operations.

It would be very interesting to read the
investigator's narrative on this incident.
If the battery was crapped . . . how long
since last cap-check? The King Airs run
nicely with no battery on line. I'm mystified
as to how a battery with dead/shorted cells
causes both generators to shut down. The
battery ammeter on the airplane would be
showing a HUGE charge current combined with
low bus voltage . . . telling crew that
the battery needs to be shut off.

There is a great deal more to this story
than what we're told. I'm betting that
there is an underlying history of poor
maintenance and/or crew understanding
that precipitated this event. None-the-less,
it will be cited as a total system failure
event causing poorly informed readers
to factor the story into their knowledge
base . . . bad mojo . . .



Bob . . .


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nuckolls.bob(at)aeroelect
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PostPosted: Wed Jan 01, 2020 12:52 pm    Post subject: Interesting King Air Complete Electrical Failure Reply with quote

At 10:56 PM 12/31/2019, you wrote:
Quote:
A Carson Air Ltd. Beech B300 (C-GILK/CA611) from Vancouver, BC (CYVR) to Campbell River, BC (CYBL) encountered electrical failure shortly after take-off. Aircraft requested to return to CYVR before losing contact with Vancouver (VR) Departure control. Aircraft then called the Vancouver/Boundary Bay, BC (CZBB) tower via phone, declared an emergency and landed on Runway 07 safely. No impact on operations.

It would be very interesting to read the
investigator's narrative on this incident.
If the battery was crapped . . . how long
since last cap-check? The King Airs run
nicely with no battery on line. I'm mystified
as to how a battery with dead/shorted cells
causes both generators to shut down. The
battery ammeter on the airplane would be
showing a HUGE charge current combined with
low bus voltage . . . telling crew that
the battery needs to be shut off.

The narrative says the removed battery was
low in output . . . but did anyone attempt
to charge and cap-check the battery? Skip
Koss frequently lamented the numbers of
batteries returned to Concorde where
inspection showed the battery to be
serviceable after receiving proper
attention.

There is a great deal more to this story
than what we're told. I'm betting that
there is an underlying history of poor
maintenance and/or crew understanding
that precipitated this event. None-the-less,
it will be cited as a total system failure
event causing poorly informed readers
to factor the story into their knowledge
base . . . bad mojo . . .



Bob . . .


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nuckolls.bob(at)aeroelect
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PostPosted: Wed Jan 01, 2020 3:18 pm    Post subject: Interesting King Air Complete Electrical Failure Reply with quote

At 04:56 PM 1/1/2020, you wrote:
Quote:
Keep in mind the way these reports are generated. The incident is recorded by atc and someone at Transport Canada decides to get follow up. They call the director of maintenance and get a verbal report. They are expecting an SDR so there is no investigation and no fact checking. There is no way to tell fact from fiction.

Thinking about it, perhaps the crew never got the generators online or selected them off right before takeoff when attempting to action a different switch such as the igniters or anti ice vanes. Then when the gear is selected up the hydraulic pump drains the battery. Unlikely but not so unlikely as a faulty battery taking the gens offline.

. . . too bad. There are many anomalous events
that go unexplored yet reported in "never again"
articles . . . or not at all.

If the crew did mis-position switches and
ran their battery down, it stands to reason
that they would be reluctant to advertise
the error . . . assuming also that they
even know what brought it about.

So much useful information lost in the noise.




Bob . . .


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