Appendix 1 to ETSO-C137a -- MPS for Aircraft Portable Megaphones

• ED Decision 2022/018/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

###### Appendix 1 to ETSO-C137a — MPS for Aircraft Portable Megaphones *ED Decision 2022/018/R* SAE International’s Aerospace Standard (AS) AS4950B, ‘Design and Performance Criteria for Transport Aircraft Portable Megaphones’, dated March 2007, is modified as per Table 1 below. ***Table 1 — Modification of AS4950B, ‘Design and Performance Criteria for Transport Aircraft Portable Megaphones’*** <table bgcolor="#d9d9d9" cellpadding="7" cellspacing="0"> <col/> <col/> <col/> <tr valign="top"> <td bgcolor="#808080"><p> <b>Location in AS4950B</b></p> </td> <td bgcolor="#808080"><p> <b>Initial AS4950B text</b></p> </td> <td bgcolor="#808080"><p> <b>Amending text</b></p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p> <b>3.4.1</b></p> </td> <td bgcolor="#d9d9d9"><p> All materials used except small parts (knobs, triggers, fasteners, seals, and small electrical parts) that would not contribute significantly to the propagation of a fire shall be <br/> self-extinguishing when tested in accordance with the applicable requirements of 14 CFR 25.853.</p> </td> <td bgcolor="#d9d9d9"><p> Compliance shall be shown with the flammability test specified in EUROCAE ED‑14G / RTCA DO‑160G, Section 26 for Category C: Flammability. If ignition occurs inside or outside the equipment, the equipment shall not propagate the flame.</p> </td> </tr> </table> [Amdt ETSO/17]