USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Aviation Recommendations

The Pipeline and Hazardous Materials Safety Administration is required by law to respond to safety recommendations issued by the National Transportation Safety Board (NTSB), an independent federal agency charged by Congress with investigating significant incidents that involve hazardous materials. Recommendations usually address a specific issue uncovered during an investigation or study and specify how to correct the situation.

NTSB Classifications:

  • OAA - Open Acceptable Response
  • OAAR - Open Acceptable Alternate Response
  • OUA - Open Unacceptable Response
  • ORR - Open Response Received
  • OAR - Open Await Response

The items below are the currently open NTSB recommendations regarding aviation.

Currently Open Recommendations

Aviation NTSB Safety Recommendations
Recommendation NumberDescriptionIssue Date
A-08-001 Lithium Batteries; OAAJan 7, 2008
A-08-002 Lithium Batteries; OAAJan 7, 2008
A-16-001 Segregation of Lithium Batteries from Class 3 flammable liquids; OAAFeb 9, 2016
A-16-002 Maximum Loading Densities for Lithium Batteries or Class 3 Flammable Liquids; OAAFeb 9, 2016
Last updated: Wednesday, April 18, 2018