Oxygen — Passenger Oxygen Boxes Non-Conformity

Published: Sep 21, 2021
Effective: Sep 21, 2021
Deadline: Sep 21, 2021

Bombardier BD-700 1A10 1A11

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of Bombardier BD-700-1A10 and BD-700-1A11 aircraft must inspect passenger oxygen box dual manifolds within 4 months or 30 months from the effective date depending on aircraft serial number, and replace any affected assemblies per the specified Bombardier service bulletins. Additionally, installation of affected oxygen box parts with specified lot and serial numbers is prohibited from the effective date onward.

Summary

Canadian Airworthiness Directive CF-2021-30 addresses a non-conformity in passenger oxygen box dual manifolds on Bombardier Inc. BD-700-1A10 and BD-700-1A11 aircraft. The directive mandates inspection and replacement of affected oxygen box assemblies to prevent piston ejection and oxygen leakage during emergency use. It also prohibits installation of certain affected parts identified by specific lot and serial numbers.

What changed

This new Airworthiness Directive introduces a one-time inspection requirement for passenger oxygen box dual manifolds on specified Bombardier BD-700 models and prohibits installation of affected oxygen box assemblies with identified part, lot, and serial numbers. It specifies compliance timelines based on aircraft serial numbers and references applicable Bombardier service bulletins for corrective actions.

Why it matters

This directive is critical for aviation professionals to ensure passenger safety by preventing oxygen depletion during emergencies caused by piston ejection and oxygen leakage. Operators and maintenance organizations must comply to maintain airworthiness and regulatory compliance. Failure to address the non-conformity could compromise emergency oxygen supply and regulatory approval for flight operations.

More for Bombardier BD-700

All 79

Get the next one by email

New ADs and bulletins for Bombardier BD-700, summarized like this page, every Monday.