What is IETM is it a document similar to PDF?

IETM Level 1 and 2 are PDF files.
IETM Levels 3 and 4 are not any document like MS Word or PDF file.
IETM is a combination of Software and database. All the manuals are converted to SQL database. Using IETM Viewer, the user can access the data i.e. manuals, drawings, images, etc.
IETM has 3 modes. User mode where users can access the documents. Admin mode where Admin can create users and track the activities of users.
Super admin or Authoring tool, where all the manuals are converted to database using this authoring tool.

IETMs are available in 2 standards

Government of India, Ministry of defense has framed few standards, Joint service Guide 0852:2001 and reframed in 2007.

It is called S1000D, mainly used in the Aviation industry
If the RFQ or tender documents say it is IETM means, it's Indian standard only. If the end-user wants S1000D, then specifically “S1000D IETM LEVEL -4” is mentioned.

Command Palette