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Search: Posts Made By: peekay4
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Forum: Tech Log
28th May 2015, 03:28
Replies: 98
Views: 36,769
Posted By peekay4

No. In the context of the FAA AD, the APU is not...

No. In the context of the FAA AD, the APU is not considered, as presumably the APU may not be operating at the time of the GCU failures (see below for exact wording).

The AD does NOT mean integer...
Forum: Tech Log
27th May 2015, 05:37
Replies: 98
Views: 36,769
Posted By peekay4

No, it is perfectly clear. Each GCU is...

No, it is perfectly clear.

Each GCU is independent. The counter is internal to each GCU. Failure of one GCU only affects that particular GCU, and will not affect any others.

The danger is if...
Forum: Tech Log
27th May 2015, 01:57
Replies: 98
Views: 36,769
Posted By peekay4

All analogue systems -- whether mechanical or...

All analogue systems -- whether mechanical or electrical -- suffer from aging (yes, that is a technical term). Simply put, analogue systems always drift over time, continuously varying their...
Forum: Tech Log
26th May 2015, 21:03
Replies: 98
Views: 36,769
Posted By peekay4

There is no such thing as a perfect process or a...

There is no such thing as a perfect process or a perfect system. And furthermore, expecting (or depending on) perfection is the wrong thing to do, because it is unrealistic.

In fact, during...
Forum: Tech Log
4th May 2015, 06:47
Replies: 98
Views: 36,769
Posted By peekay4

The purpose of an integer counter is to provide a...

The purpose of an integer counter is to provide a standard measurement of time.

Remember that hardware can run at varying speeds, so we can't rely on hardware cycle speed to measure time. E.g.,...
Forum: Tech Log
2nd May 2015, 01:06
Replies: 98
Views: 36,769
Posted By peekay4

Boeing 787 integer overflow bug

Please don't leave your 787 powered on for 248 days straight...

New FAA AD:

https://s3.amazonaws.com/public-inspection.federalregister.gov/2015-10066.pdf
Showing results 1 to 6 of 6


 
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