What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On 12/10/02, (raia) flight 5316, enroute from pit to sbn, returned to pit shortly after departure and made an emergency landing on runway 10C without incident. Further investigation revealed that an "o" ring on the #1 hydraulic manifold pressure switch failed, causing #1 hydraulic engine driven pump cavitation, due to a loss of hydraulic fluid on the #1 hydraulic system. The passengers were deplaned on runway 10C and taken to the terminal by bus. There were no reports of any injuries to the passengers or crew. The airplane was towed to the ramp. The #1 hydraulic pump was removed and replaced along with the #1 hydraulic manifold pressure switch. Airplane was returned to service without further problems. This information was received by paul bercher, Pittsburgh maintenance manager. Submission of this report closes this incident.
As the FAA filed it
(-23) ON 12/10/02, (RAIA) FLIGHT 5316, ENROUTE FROM PIT TO SBN, RETURNED TO PIT SHORTLY AFTER DEPARTURE AND MADE AN EMERGENCY LANDING ON RUNWAY 10C WITHOUT INCIDENT. FURTHER INVESTIGATION REVEALED THAT AN "O" RING ON THE #1 HYDRAULIC MANIFOLD PRESSURE SWITCH FAILED, CAUSING #1 HYDRAULIC ENGINE DRIVEN PUMP CAVITATION, DUE TO A LOSS OF HYDRAULIC FLUID ON THE #1 HYDRAULIC SYSTEM. THE PASSENGERS WERE DEPLANED ON RUNWAY 10C AND TAKEN TO THE TERMINAL BY BUS. THERE WERE NO REPORTS OF ANY INJURIES TO THE PASSENGERS OR CREW. THE AIRPLANE WAS TOWED TO THE RAMP. THE #1 HYDRAULIC PUMP WAS REMOVED AND REPLACED ALONG WITH THE #1 HYDRAULIC MANIFOLD PRESSURE SWITCH. AIRPLANE WAS RETURNED TO SERVICE WITHOUT FURTHER PROBLEMS. THIS INFORMATION WAS RECEIVED BY PAUL BERCHER, PITTSBURGH MAINTENANCE MANAGER. SUBMISSION OF THIS REPORT CLOSES THIS INCIDENT.