SDR AALA202105119012

Service difficulty report · Window · Boeing 777223

Difficulty date: May 8, 2021
Submitted: May 11, 2021
Operation: Air carrier
Aircraft: N792AN
Make and model: Boeing 777223
Aircraft serial: 30253
Aircraft time: 78,788 hours, 10,011 cycles
System (JASC): 5610 · Flight Compartment Windows
Part: Window
Condition: Leaking
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: CABIN PRESSURIZATION FLUCTUATION AT FLIGHT LEVEL 360, FLIGHT LEVEL 340 FLIGHT LEVEL 300 FLIGHT LEVEL 280 WITH LOUD SQUEAL IN CAPTAIN AND FIRST OFFICERS FORWARD WINDOW. EMERGENCY NOT DECLARED. FLIGHT DIVERTED TO DFW AND WAS NOT OVERWEIGHT FOR LANDING. AIRCRAFT TAKEN OUT OF SERVICE. REMOVED AND REPLACED LEFT (AALA202105119003) AND RIGHT NUMBER 1 WINDOWS PER WORK CARD 72L21056001. PRESSURIZED WITH NO SQUEAL OR DROP IN PSI NOTED.