NIST 800-171, Aerospace standards, CIS 20, NIST 800-53 with ISO 27001 Standards

Answer:

NIST 800-171, NIST 800-53, and CIS 20 (Center for Internet Security) provide detailed information for implementation of some controls related to ISO 27001 Annex A, so to integrate these controls to ISO 27001 you have to map the relationship between them. NIST documents already have annexes that identify these relations (NIST 800-171 Annex D and NIST 800-53 Anex H). Unfortunately we are not experts on CIS 20 to inform you have such relations already been mapped.

Regarding Aerospace standards, without details about which one you are referring to, we are unable to provide a proper answer.

These articles will provide you further explanation:
- How to use the NIST SP800 series of standards for ISO 27001 implementation https://advisera.com/27001academy/blog/2016/05/02/how-to-use-the-nist-sp800-series-of-standards-for-iso-27001-implementation/
- How to use NIST SP 800-53 for the implementation of ISO 27001 controls https://advisera.com/27001academy/blog/2016/05/10/how-to-use-nist-sp-800-53-for-the-implementation-of-iso-27001-controls/