Airbus A318/A319/A320/A321 — Evacuation Systems - Coupling Pin Verification
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators and maintenance organizations should apply the updated instructions in Air Cruisers VSB 004-25-50 Revision 2 to prevent coupling pin omission. They are also advised to carry out inspections per Air Cruisers VSB 004-25-82 at the earliest maintenance opportunity to verify coupling pin installation on all affected slide reservoirs, except for A321 doors 2 and 3. Inspections can be performed without unpacking door slides and should follow Airbus AMM procedures for safety and access.
Summary
EASA Safety Information Bulletin 2010-27 is an informational document addressing evacuation system issues on Airbus A318, A319, A320, and A321 aircraft. It highlights incidents where evacuation slides failed to deploy due to missing coupling pins in the reservoir and valve assemblies. The bulletin provides guidance to operators and maintenance organizations to verify and correct the installation of coupling pins in affected slide reservoirs.
What changed
This bulletin clarifies and rephrases the accomplishment instructions of Air Cruisers Vendor Service Bulletin 004-25-50 Revision 2 to prevent omission of the coupling pin during valve pulley replacement. It also recommends performing Air Cruisers VSB 004-25-82 to inspect and verify the correct installation of the coupling pin on all units that have incorporated earlier versions of VSB 004-25-50.
Why it matters
Proper installation of the coupling pin is critical to ensure evacuation slides inflate correctly during emergencies. Missing coupling pins prevent gas release from the reservoir, resulting in slide deployment failure, which poses a significant safety risk. This information helps operators and maintenance teams avoid such failures and maintain compliance with safety standards.
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