George, The FAA publishes volumes of airworthiness requirements which commercial aircraft must meet ... try their website @ www.faa.gov and look at Advisory Circulars or call the FAA Tech Center in Atlantic City regarding vibration test procedures for airborne electronics assemblies. I also have a copy of Mil-Std-810E ... Vibration is test method 514.4 and it is about 100 pages long. I'd be glad to mail you a copy if you'd contact me offline with your mailing address. Sheila Smith, Tracor AES At 09:26 AM 8/13/97 -0400, you wrote: >'Netters: >Thanks for your reply, Jim Moffitt. I had not yet found the Mil-Std-810 >method spec. > >I am also looking for any requirement specs. >If a Boeing Engineer wanted to place some electronics near the engines, >vibration should be expected and taken into consideration at design. Is >there a design/production spec for circuit card assemblies which include >requirements to meet some vibration/shock criteria? How are these >requirements invoked now that Mil-C-28809B is gone? > >What shock and vibration requirements are placed on the famous Flight Data >Recorders searched for and recovered after airline crashes? They have >boards in them, right? > >There are 'Commercial-Off-The-Shelf' ruggedized VME cards available. What >shock and vibration specification do they meet, if any? Is there a >commercial spec for this, or is 'ruggedized' an indefinite marketing word? > >Thanks for everyones responces, > >George Franck >Raytheon E-Systems >Falls Church Va >---------- >> From: [log in to unmask] >> To: [log in to unmask] >> Subject: Re: Asm Shock/Vib. Specs. >> Date: Tue, 12 Aug 1997 10:58:11 -0400 (EDT) >> >>George: >>- As you know Mil-C-28809B was canceled on 4/19/95 without replacement. >The >>environmental tests of 28809 are closely related to the tests described by >>Mil-Std-810E. >>- Mil-Std-810E (Environmental Test Methods & Engineering Guidelines) was >(the >>last I heard) being retained as a Test Method Standard pending action by >ANSI >>to identify alternative or replacement private sector specs/stds. The >>Mil-Std may be available from some normal (Government) sources if it has >not >>yet been canceled. >>- If you are unable to obtain a copy of 810E and need an alternative >private >>sector Spec. then you might check with the EIA Standards Section >>(http://www.eia.org/eng/catalog/catindex.htm) as they have a number of >>standard methods listed (see EIA-186-7E or EIA-186-8E). >>- After identifying a viable alternative Spec. you need to discuss >SPI/Block >>Change using the different specifications with your customers. >>- Pose any additional questions direct to [log in to unmask] >>Regards, Jim Moffitt >> >> >