AMETEK Ameron Receives FAA-PMA Approval for M447966 Harness Block

BALDWIN PARK, CALIFORNIA (November 13, 2025) – AMETEK Ameron, a leader in aviation safety equipment, has received FAA-PMA approval for the M447966 Harness Block.

The M447966 Harness Block, a sub-component of the MXH21-31 Harness Assembly, provides a seal to prevent oxygen leakage. This inflatable harness is part of the Oxygen Mask Regulator Assembly, used by aircraft crews during emergencies to protect against depressurization, fumes, and harmful gases.

"Ameron’s FAA-PMA approval for the M447966 Harness Block highlights our commitment to delivering reliable, safety-critical components and expanding access to cost-effective solutions for aircraft crew protection," said Adam Brammer, Business Manager for AMETEK Ameron.

FAA-PMA M447966 is eligible for installation on Cessna Citation 750, 680, 560XL, and Dassault Aviation Mystere-Falcon 900, Falcon 900EX, Falcon 2000EX. For this PMA or any of Ameron over 650 PMA parts, contact the Ameron parts department at https://store.ametekmro.com .
Website: www.ameronglobal.com

About AMERON

AMERON, a brand of AMETEK MRO, specializes in global aviation safety equipment that includes repair and overhaul solutions; over 650 FAA/EASA-approved PMA parts and components; and a growing OEM portfolio. Serving customers for 50 years, AMERON has pioneered numerous advances in aerospace fire suppression systems and is a leader in pressurized gas systems, fire extinguishers, and pressurized stored energy systems. AMERON is certified by the U.S. Department of Transportation, and its products meet or exceed MIL-I-45208A specifications.