Re: NTSB preliminary report on UP rearend collision in Wyoming
Author: john
Date: 11-06-2018 - 08:11

SPKID Wrote:
-------------------------------------------------------

>
1) Does the engineer have any way to know
> if the FRED is mechanically malfunctioning, i.e,
> communicating, but for some reason not responding
> to a command to plug the air? 2)

The FRED communicates the pipe pressure at the rear of the train.There is no way for an engineer to know that the FRED would not respond to a command to plug the air in advance of plugging it.

Part of the class 1 air test involves plugging the FRED to determine that it is communicating and working properly before departure.

All modern road engines have a working CFM flow gauge.



Subject Written By Date/Time (PST)
  NTSB preliminary report on UP rearend collision in Wyoming OPRRMS 11-05-2018 - 12:01
  Re: NTSB preliminary report on UP rearend collision in Wyoming OPRRMS 11-05-2018 - 12:15
  Re: NTSB preliminary report on UP rearend collision in Wyoming Ross Hall 11-05-2018 - 17:19
  Re: NTSB preliminary report on UP rearend collision in Wyoming Nudge 11-05-2018 - 20:04
  Re: NTSB preliminary report on UP rearend collision in Wyoming amtrakfan4ever 11-05-2018 - 20:44
  Re: NTSB preliminary report on UP rearend collision in Wyoming 1st cajon 11-05-2018 - 21:52
  Re: NTSB preliminary report on UP rearend collision in Wyoming WebDigger 11-05-2018 - 21:17
  Re: NTSB preliminary report on UP rearend collision in Wyoming SPKID 11-06-2018 - 07:26
  Re: NTSB preliminary report on UP rearend collision in Wyoming john 11-06-2018 - 08:11
  Re: NTSB preliminary report on UP rearend collision in Wyoming Espee99 11-06-2018 - 09:37
  Re: NTSB preliminary report on UP rearend collision in Wyoming Retired 11-06-2018 - 10:02
  Kinked air hoses, turned angle cocks, FRED, and PTC???? BOB2 11-06-2018 - 10:29
  Re: Kinked air hoses, turned angle cocks, FRED, and PTC???? jst3751 11-08-2018 - 09:48
  Re: Kinked air hoses, turned angle cocks, FRED, and PTC???? Dr Zarkoff 11-08-2018 - 23:39
  Re: Kinked air hoses, turned angle cocks, FRED, and PTC???? steve 11-11-2018 - 14:23


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