Passenger Compartment Oxygen System - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

1. Description
The chemical oxygen generator system used in this airplane is a single-use system, which will deliver
constant flow upon demand for approximately 15 minutes (i.e. - long enough for the airplane to be flown
to an altitude of 10,000 feet or less) after ignition.
Passenger oxygen is installed in the cabin under the passenger seat directly behind the copilot's seat,
and contains four masks and two oxygen generators.
The generators are activated individually by removing a mask from the storage drawer and pulling the
lanyard attached to the mask. This action pulls the firing pin allowing the hammer to strike the percussion
cap and ignites the generator. Once activated, the oxygen will continue to flow until the particular
generator is expended. An indicator light is located in the annunciator panel and illuminates whenever
any one of the generators has been activated.
2. Fixed Oxygen Generator System (See Figures 1 and 2.)
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN SERVICING
OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER AIRCRAFT, MAY
RENDER THE AIRCRAFT UNAIRWORTHY. (SEE INTRODUCTION - SUPPLEMENTARY
PUBLICATIONS.)
Take care when handling the oxygen generators. Even though they are not under high pressure, they do
generate very high tempertures. Inadvertant ignition due to careless handling is to be avoided. The
generators have a percussion cap igniter on one end which must be protected with a plastic cover when
the generator(s) are removed from the mounting tray/drawer. Do not remove this plastic protective cover
until the generator is installed/reinstalled in the mounting tray/drawer and the system is rearmed.
NOTE: Installed generators are normally removed only when expended, damaged, or at the end of their
twelve (12) year service life (as indicated by the date of manufacture on the individual unit
dataplate).
A. 100 Hour Inspection
(1) Turn master switch ON. Inspect the annunciator panel display to ensure "Oxygen" warning light
remains OFF. If warning light is ON, check first for an expended generator. If no generator is
expended, check that the hammer has properly captured the microswitch at each generator
location.
(2) Inspect each firing pin and hammer. If firing pin has been pulled and hammer is in contact with
percussion cap, consider the generator to be expended and replace.
(3) Inspect each percussion cap:
(a) Verify that the plastic protective cover has been removed from each percussion cap. If not,
remove plastic protective cover.
(b) If the normally smooth surface of the percussion cap exhibits any evidence of indentation,
replace the generator.
(4) Check each generator for security within its mounting points.
(5) Check each generator for any obvious physical damage (i.e. - punctures, dents, deep
scratches, etc.). If damage present, replace generator.
CAUTION: DO NOT PULL ON THE LANYARD. THE GENERATOR MAY IGNITE IF THE
(6) Check lanyard cords for fraying and security at both ends.
6C19
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
PASSENGER
LANYARD IS PULLED.
35-20-00
Apr 15/07
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