What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Prior to the incident the crew had been asked to expedite their descent to FL400 by a previous controller, and because they were empty they could easily comply. They said they may have reported level FL400 a bit prematurely, and due to the higher than normal rate of descent, the autopilot did not begin to capture the altitude soon enough. SWA3167 observed an ra most likely due to EJA934'S high rate of descent, rather than eja's momentary descent below FL400. (Crew stated they went no lower than FL398 by their instruments). The incident was reported to the operator's aviation safety action program (asap). The asap event number is 1396.
As the FAA filed it
(-23) PRIOR TO THE INCIDENT THE CREW HAD BEEN ASKED TO EXPEDITE THEIR DESCENT TO FL400 BY A PREVIOUS CONTROLLER, AND BECAUSE THEY WERE EMPTY THEY COULD EASILY COMPLY. THEY SAID THEY MAY HAVE REPORTED LEVEL FL400 A BIT PREMATURELY, AND DUE TO THE HIGHER THAN NORMAL RATE OF DESCENT, THE AUTOPILOT DID NOT BEGIN TO CAPTURE THE ALTITUDE SOON ENOUGH. SWA3167 OBSERVED AN RA MOST LIKELY DUE TO EJA934'S HIGH RATE OF DESCENT, RATHER THAN EJA'S MOMENTARY DESCENT BELOW FL400. (CREW STATED THEY WENT NO LOWER THAN FL398 BY THEIR INSTRUMENTS). THE INCIDENT WAS REPORTED TO THE OPERATOR'S AVIATION SAFETY ACTION PROGRAM (ASAP). THE ASAP EVENT NUMBER IS 1396.