What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Shortly after take off from San Jose, CA. Airport (sjc) and up about 5000 feet, both the pilot and copilot noticed an undetermined vibration coming from the left side of the a/c behind the pilot. Both pilot and copilot made the decision to return to San Jose for further investigation of the vibration. After making an uneventful landing back at San Jose airport, the pilot noted that a similar indication had been noted during a landing two days earlier. This entry was made as information only. America west airline mechanics tried to duplicate the vibration by running the a/c on the ground, however, they were unsuccessful. America west airlines station manager made the decision to take the a/c out of service at thsi time. A decision was made to send back to their home base station for a team of troubleshooting mechanics who were more experienced in locating such problems.
As the FAA filed it
(-23) SHORTLY AFTER TAKE OFF FROM SAN JOSE, CA. AIRPORT (SJC) AND UP ABOUT 5000 FEET, BOTH THE PILOT AND COPILOT NOTICED AN UNDETERMINED VIBRATION COMING FROM THE LEFT SIDE OF THE A/C BEHIND THE PILOT. BOTH PILOT AND COPILOT MADE THE DECISION TO RETURN TO SAN JOSE FOR FURTHER INVESTIGATION OF THE VIBRATION. AFTER MAKING AN UNEVENTFUL LANDING BACK AT SAN JOSE AIRPORT, THE PILOT NOTED THAT A SIMILAR INDICATION HAD BEEN NOTED DURING A LANDING TWO DAYS EARLIER. THIS ENTRY WAS MADE AS INFORMATION ONLY. AMERICA WEST AIRLINE MECHANICS TRIED TO DUPLICATE THE VIBRATION BY RUNNING THE A/C ON THE GROUND, HOWEVER, THEY WERE UNSUCCESSFUL. AMERICA WEST AIRLINES STATION MANAGER MADE THE DECISION TO TAKE THE A/C OUT OF SERVICE AT THSI TIME. A DECISION WAS MADE TO SEND BACK TO THEIR HOME BASE STATION FOR A TEAM OF TROUBLESHOOTING MECHANICS WHO WERE MORE EXPERIENCED IN LOCATING SUCH PROBLEMS.