Work Item
ASTM WK77612

New Practice for Alternative Injury Criteria for Dynamic Seat Testing

1. Scope

This practice will provide an alternative means of compliance for emergency landing loads which are currently in F3083, section 4.2.3. The practice will describe a means of compliance to assess chest injury using ATD chest deflection and acceleration measurements instead of the current shoulder belt loads criteria.


restraints, injury criteria, dynamic, emergency landing, seat,


Shoulder belt load criteria of 1750 lb. for a single diagonal restraint (2000 lb. for a dual harness) is highly dependent on the geometry of the belt configuration. A direct measurement of chest deflection and acceleration eliminates the geometry effect of the shoulder belt. The practice will be used by aircraft designers and seat suppliers to certify seats for use in aircraft

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: F44.30

Committee: F44

Staff Manager: Joe Koury

Work Item Status

Date Initiated: 07-07-2021

Technical Contact: Jay Yeakle

Item: 000