What happened
The FAA now requires a secondary flight deck barrier on newly delivered U.S. Part 121 commercial airplanes as of August 25, 2026, and does not require retrofits on aircraft already in service.
When a pilot steps out of the cockpit, the extra barrier is supposed to buy time to shut and lock the reinforced door. The hardware is usually a folding gate that stays stowed until the cockpit door opens. Flight attendants had been blocking the aisle with a cart when that door was open. The FAA estimates purchase and installation at $35,000 per aircraft. Present-value costs sit at $236.5 million using a 7% discount rate and $505 million using 3%.
ALPA wants the same protection on every passenger flight and is pushing the FAA to require retrofits, not just new builds. Frequent flyers will encounter the extra gate only on newly delivered U.S. airliners. Older aircraft can keep flying without it.
Nothing to book, but watch whether the FAA orders retrofits on the in-service fleet.
- Starts
- Aug 25, 2026
- Numbers
- $35,000: estimated barrier purchase and installation cost per aircraft
- $236.5 million: present-value cost of the rule at a 7% discount rate
- $505 million: present-value cost of the rule at a 3% discount rate
- Who qualifies
- Newly delivered U.S. Part 121 commercial airplanes as of August 25, 2026
- Takeaway
- There is nothing to book or register; watch whether the FAA expands the rule to retrofit in-service aircraft.