What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) At FL390, flight crew observed (and felt) the cabin alittude increasing. The crew initiated an emergency procedure, declared an emergency with ATC, and notified them it was necessary to descend. ATC issued a 20 degree heading change; however, N81TT'S rate of descent was greater than anticipated, and a loss of IFR separation occurred with another acft (2.8 NM and 1,100 feet). After cabin pressure stabilized at approximately 7,800 feet, the crew requested a clearance to lincoln, NE. A telephone call was also made to a service center in minneapolis, MN (msp). The flight was then re-routed to msp. An inspection found that a flex coupling had separated from the ecs plenum, and the part was replaced. Incident privacy data omitted is closed with this report. Loss of pressurization.
As the FAA filed it
(-23) AT FL390, FLIGHT CREW OBSERVED (AND FELT) THE CABIN ALITTUDE INCREASING. THE CREW INITIATED AN EMERGENCY PROCEDURE, DECLARED AN EMERGENCY WITH ATC, AND NOTIFIED THEM IT WAS NECESSARY TO DESCEND. ATC ISSUED A 20 DEGREE HEADING CHANGE; HOWEVER, N81TT'S RATE OF DESCENT WAS GREATER THAN ANTICIPATED, AND A LOSS OF IFR SEPARATION OCCURRED WITH ANOTHER ACFT (2.8 NM AND 1,100 FEET). AFTER CABIN PRESSURE STABILIZED AT APPROXIMATELY 7,800 FEET, THE CREW REQUESTED A CLEARANCE TO LINCOLN, NE. A TELEPHONE CALL WAS ALSO MADE TO A SERVICE CENTER IN MINNEAPOLIS, MN (MSP). THE FLIGHT WAS THEN RE-ROUTED TO MSP. AN INSPECTION FOUND THAT A FLEX COUPLING HAD SEPARATED FROM THE ECS PLENUM, AND THE PART WAS REPLACED. INCIDENT ^PRIVACY DATA OMI^ IS CLOSED WITH THIS REPORT. LOSS OF PRESSURIZATION.