FAA PMA - Alternate Part Numbers/Manufacturers approved by the Federal Aviation Administration
PMA Part #
(Replacement For OEM PN)
Approval Means Description
PMA Holder
Model Eligibility
Ring Set - Matched Piston (Honeywell P/N 3171622-3 installed in Honeywell High Stage Valve P/Ns 3214446-2, 3214446-3, and Pressure Regulating and Shutoff Valve P/Ns 3214552-3, 3214552-4)
Boeing (737-300 Series, 737-400 Series, 737-500 Series)
Ring Set - Matched Piston (Honeywell P/N 3171622-3 installed in Honeywell High Stage Valve P/N 3214446-4, and Pressure Regulating and Shutoff Valve 3214552-5)
