gawd I love this country
Sorry, but could not resist . . .
The net today is like eight lanes of open road.
-----Original Message-----
From: jbrusse [mailto:[log in to unmask]]
Sent: Wednesday, December 29, 1999 9:33 PM
To: [log in to unmask]
Subject: Re: [TN] NASA Standards
Rick,
I have the following information to offer you regarding your question about
NASA Handbooks (now being converted into NASA Technical Standards or
cancelled in favor of adopting industry standards). This information comes
from Mr. Garry McGuire who is a contractor helping to manage NASA Goddard
Space Flight Center's Training Facility. I hope this information helps.
Sincerely,
Jay Brusse
Unisys Corporation at NASA Goddard Space Flight Center
[log in to unmask]
-------
To: Users of NASA Space Flight Hardware Workmanship Standards
From: GSFC/300.1/HEI/Garry McGuire
Subject: Status of NASA Workmanship Standards as of November 9, 1999
1. NHB 5300.4(3A-2) was cancelled effective 12/97. The current
workmanship standard for hand or wave soldered electrical assemblies is NASA
Technical Standard NASA-STD-8739.3; Soldered Electrical Connections.
2. NAS 5300.4(3G-1) was cancelled effective 2/98. The current
workmanship standard for wiring space flight hardware is NASA Technical
Standard NASA-STD-8739.4; Crimping, Interconnecting Cables, Harnesses, and
Wiring.
3. NHB 5300.4(3H) was cancelled effective 2/98. The current workmanship
standard for crimping electrical contacts onto space flight wiring harnesses
is NASA Technical Standard NASA-STD-8739.4; Crimping, Interconnecting
Cables, Harnesses, and Wiring.
Note: The crimping portion of 3H was revised and transferred into the
revised cabling standard (#2 above). The wire wrap portion will not be
renewed by NASA. MIL-STD-1130, Connections, Electrical, Solderless Wrapped
should be used by projects intending to use wire wrap for flight hardware or
mission critical ground support equipment.
4. NHB 5300.4(3I) was cancelled in May of 1996. Use the Class 3
requirements of IPC-6011, Generic Performance Specification for Printed
Boards; and IPC-6012, Qualification and Performance Specification for Rigid
Printed Boards. GSFC Code 303 maintains a supplement to these standards
that should be considered by all projects. Contact the GSFC Code 300
library at (301) 286-7240 and request document S312-P-003, the current
revision is "B."
5. NAS 5300.4(3J-1) is the current conformal coating and staking
standard.
6. NHB 5300.4(3K) was cancelled in May of 1996. Use IPC-2221, Generic
Standard on Printed Board Design; and IPC-2222, Sectional Design Standard
for Rigid Organic Printed Boards.
7. NHB 5300.4(3L) was cancelled effective 12/97. The current NASA
Technical Standard for controlling electrostatic discharges is
NASA-STD-8739.7; Electrostatic Discharge Control (Excluding Electrically
Initiated Explosive Devices).
Note: Changes between the two versions of this document apply only to its
structure and numbering format. There are no technical changes between NHB
5300.4(3L) and NASA-STD-8739.7.
8. NAS 5300.4(3M), no rev., is the current surface mount technology
soldering processes standard.
9. NASA-STD-8739.5 is the current fiber optics termination standard.
As each new NASA Technical Standard (NASA-STD-8739.*) is released,
concurrent with publication will be its availability electronically at the
webpage for NASA's Office of Safety and Mission Assurance at:
http://www.hq.nasa.gov/office/codeq/doctree/doctree.htm
<http://www.hq.nasa.gov/office/codeq/doctree/doctree.htm>
Following this link will take you to a drawing tree containing many NASA
documents. The workmanship standards are in the bottom right corner. Click
on the box for any document to see its revision status or download it in PDF
format.
NOTE: NAS 5300.4(3J-1) and NAS 5300.4(3M) are being restructured into the
NASA-STD-8739 series format and will be released as NASA-STD-8739.1 and
NASA-STD-8739.2 respectively. Estimated completion is sometime around
January, 2000.
If you have any questions, I may be reached at (301) 731-8624.
-----Original Message-----
Date: Tue, 28 Dec 1999 15:59:49 -0700
From: "Howieson, Rick" <[log in to unmask]>
Subject: NASA
Hello All,
Heeelp!!! Can't get hold of our NASA rep. Must be one of those government
shut downs. God help their private sector supplier who wants to have time
off? Anyhow, does anyone out there know if NHB 5300.4 (3I) is still in
existence and if so what revision? I've searched throughout NASA's web site
and was unable to locate this spec.
Thanks in advance,
Rick Howieson
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