Consultation on proposed Deviation Request UKTSO-C127c.Dev.001

Feedback updated 16 Oct 2026

We asked

We asked for comments against the introduction of this UKTSO Deviation. It provides a clear and consistent method for modifying the pass / fail criteria and load value at which the upper torso restraint may slip off the ATD shoulder during the rebound phase of a dynamic test. The proposed approach reduces ambiguity within SAE AS8049C by defining acceptable assessment criteria where shoulder may slip off the shoulder of the Anthropomorphic Test Device (ATD) during horizontal or vertical dynamic testing.

Full details of the issue, supporting rationale, and proposed assessment method are contained within Consultation Paper UKTSO Deviation UKTSO-C127c.DEV.001, Issue 2.

You said

No responses were received during the open consultation period.

We did

The UK CAA acknowledges that no feedback was received in relation to this UKTSO Deviation during the consultation period.

As no comments or concerns were raised by stakeholders, no amendments have been made to the originally proposed UKTSO Deviation. The final UKTSO Deviation therefore remains unchanged from the proposed version published for the consultation.

The UKTSO Deviation UKTSO-C127c.DEV.001, Issue 2 has now been published in the Aviation Regulation Library.

Results updated 27 Apr 2026

Files:

Closed 30 Jan 2026

Opened 5 Jan 2026

Contact

Certification.Airworthiness@caa.co.uk

Overview

The UK CAA is consulting on a deviation request to CS-UKTSO in accordance with the provisions of Part 21.A.610.

This is a proposed deviation to CS-UKTSO Amendment 17, UKTSO-C127c, Section 3.1.1 to modify the pass/fail criteria and load value at which the upper torso restraint strap may slip off the ATD shoulder, during the rebound phase of the qualification test procedure defined by the minimum performance standard SAE AS8049/1b and SAE AS8049C, Section 5.3.9.7

Why your views matter

Why your views matter

In accordance with the UK CAA Design and Certification procedures deviation requests shall be assessed by the authority and be subject to a period of public consultation of not less than 3 weeks, except if they have been previously agreed and published by the UK CAA. Send us your comments by 30 January 2026.

How to respond

What happens next

All interested persons may provide their comments by completing the online form linked below, for review and disposition by the UK CAA.

Audiences

  • Airworthiness maintenance organisations

Interests

  • Airworthiness
  • Design and Certification
  • Manufacturers