What is the minimum dynamic coefficient of friction (DCOF) required for floor surfaces in large aeroplanes according to AMC 25.793 and 25.810(c)?

The dynamic coefficient of friction (DCOF) should be at least 0.45 in all test conditions.

According to ED Decision 2020/024/R, should floor surface material be tested wet or dry to assess slip resistance?

The floor surface material should be tested both wet and dry to assess slip resistance. Wet testing should use the type of slippery liquid expected during operation, and dry testing should be conducted to provide reference friction values.

What standards are acceptable for testing the slip-resistant properties of floor surfaces in large aeroplanes?

Acceptable standards include Military Specifications MIL-W-5044B and MIL-W-5044C, DIN 51131:2014-02, ISO 8295:1995, EN 13893:2002, and ANSI/NFSI B101.3-2012.

AMC 25.793 and 25.810(c) Floor surfaces

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ED Decision 2020/024/R

The slip-resistant properties of floor surface material should be tested wet with the type of slippery liquid expected during operation. In addition, dry testing should also be conducted to provide reference friction values. In all the test conditions, the dynamic coefficient of friction (DCOF) should be at least 0.45.

The following standard methods, using rubber and leather test devices, are acceptable (within their limitations) to conduct the testing:

— Military Specifications MIL-W-5044B (dated 24 February 1964) and MIL-W-5044C (dated 25 August 1970), titled ‘Walkway Compound, Nonslip and Walkway Matting, Nonslip’,

— DIN 51131:2014-02, titled ‘Testing of floor coverings - Determination of the anti-slip property - Method for measurement of the sliding friction coefficient’,

— ISO 8295:1995, titled ‘Plastics - Film and sheeting - Determination of coefficients of friction’,

— EN 13893:2002, titled ‘Resilient, laminate and textile floor coverings - Measurement of dynamic coefficient of friction on dry floor surfaces’,

ANSI/NFSI B101.3-2012, titled ‘Test Method for Measuring Wet DCOF of Common Hard-Surface Floor Materials’.

[Amdt 25/17]

[Amdt 25/26]

Details

Source-Title: AMC 25.793 and 25.810(c) Floor surfaces View latest amendments

Erulesid: ERULES-1963177438-18712 Compare versions

Domain: Initial airworthiness

Amendedby: Amendment 26

Applicabilitydate: 22 June, 2021

Entryintoforcedate: 23 December, 2020

Regulatorysource: ED Decision 2020/024/R Navigate

Regulatorysubject: CS-25

Typeofcontent: AMC to CS (Acceptable means of compliance to certification specification)

Parentir: CS 25.793 Floor surfaces

Origin: EASA

Category: EAR