Aircraft magnetization after lightning strike

[onemike]

Does anyone knows what will be an acceptable level of magnetization (how many Gauss) for aircraft/ aircraft components (landing gear, etc) magnetization after a lightning strike occurrence (plane hit by a lightning strike)? I am looking specifically for Bombardier's CRJ705, but any other material/reference for other manufacturer, probably will help.

 

[TZ350]

The ifo you are looking for is not in the CRJ700 AMM, but is in the CRJ200 AMM..........try TASK 20?10?01?910?801
Demagnetization of the Aircraft Components and/or Structures.

Basically it should be under 10 Gauss....

 

[onemike]

Thank you TZ350 for your reply. I'll sure look into it. What I've learned from different sources/some FSRs (field service reps. from few aircraft manufacturers)is that there is no fixed value for the magnetization (gauss); some of them recommends 4-5 gauss for MLG/NLG as acceptable. But... coulkd not lead me to a written document/ref.

 

[IRstuff]

DOD-STD-1399-070 requires that all military equipment operate in a DC magnetic of 20 Oersteds

and

MIL-HDBK-2036 para 5.1.2.1 requires that military aircraft equipment be able to operate to full specifications in a 20 Oersted DC magnetic field, with a minimum requirement of being able to operate in a 10 Oersted field

Both can be downloaded from:

http://assistdocs.com/search/search_basic.cfm

TTFN

 

[onemike]

Thank you IRstuff for your info and a very useful link. I'll check the data soon.