NTSB FOIA Request Dated 28th July 2011

On 28th July 2011, I sent a Freedom of Information Act (FOIA) request to the United States National Transportation Safety Board (NTSB) through their online request web page concerning the Flight Data Recorder (FDR commonly called "black box") file for United Airlines Flight 93 (UAL93). My aim was to get a copy of the original FDR file and the data frame layout used in the file. I received a CDROM containing them.

The data frame layout (757UALmap.xls) is available here.

There is also a file that I received in reply to a previous FOIA request, D226A101-3G.pdf which is a Boeing document containing generic data frame layouts and information on how parameters are recorded which is available here.

An ISO image of the entire CDROM I received from the NTSB is available here.

Here is the request I sent:
Thank you for your response to my previous FOIA request number 2009-00078.

I have a new request which involves NTSB Number DCA01MA065 which is the crash near Shanksville, Pennsylvania on September 11, 2001 of the B-757-200 aircraft registration number N591UA operated by United Airlines.

Footnote 1 on page 2 of the "Specialist's Factual Report of Investigation Digital Flight Data Recorder" document of February 15, 2002 made available online by the NTSB at http://www.ntsb.gov/doclib/foia/9_11/UAL93FDR.pdf refers to Attachment IV: 757UALMap.xls. Page 3 of the document also lists Attachment III: DCA01MA065 tabular csv files. I request a copy of each of these attachments.

I make this request as a private New Zealand citizen permanently residing in Australia; however I am prepared to make the information I have requested publicly available on the internet as I have done with the information you provided to me in response to my previous FOIA request at http://www.warrenstutt.com/NTSBFOIARequest2-1-09/index.html

Thank you for considering my request,

Warren Stutt.
The "Specialist's Factual Report of Investigation Digital Flight Data Recorder" document I referred to is available from the NTSB here.

I received the CDROM and the following letter in the mail from the NTSB:

The CDROM has the following files on it:
 Volume in drive D is 110922_1010
 Volume Serial Number is 191B-B355

 Directory of D:\

22/09/2011  11:58 PM    <DIR>          UA93-FDR Attachment IV_757UALmap.xls
21/03/2007  06:45 AM    <DIR>          UA93-FDR-Tabular_files
21/03/2007  06:45 AM    <DIR>          UAL93FDR
               0 File(s)              0 bytes

 Directory of D:\UA93-FDR Attachment IV_757UALmap.xls

22/09/2011  11:58 PM    <DIR>          .
23/09/2011  12:10 AM    <DIR>          ..
20/09/2001  09:52 PM         1,409,024 757UALmap.xls
               1 File(s)      1,409,024 bytes

 Directory of D:\UA93-FDR-Tabular_files

21/03/2007  06:45 AM    <DIR>          .
23/09/2011  12:10 AM    <DIR>          ..
15/02/2002  11:29 PM         3,923,980 DCA01MA065_tabAtoE.csv
15/02/2002  11:29 PM         5,194,620 DCA01MA065_tabFtoL.csv
15/02/2002  11:30 PM         2,143,017 DCA01MA065_tabMtoT.csv
15/02/2002  11:30 PM         2,414,212 DCA01MA065_tabUtoZ.csv
               4 File(s)     13,675,829 bytes

 Directory of D:\UAL93FDR

21/03/2007  06:45 AM    <DIR>          .
23/09/2011  12:10 AM    <DIR>          ..
15/09/2001  11:18 AM        37,601,360 ual93.dlu
               1 File(s)     37,601,360 bytes

     Total Files Listed:
               6 File(s)     52,686,213 bytes
               9 Dir(s)               0 bytes free

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