Narrative:

Upon completing preliminary landing checklist 'B' system hydraulic pressure was out of limits. Captain was flying. We went to aircraft manual and proceeded to troubleshoot problem. After finding nothing to help us in the manual, we decided it was prudent to lower landing gear. There was no change in hydraulic pressure, however when brakes were depressed a vibration ensued. We established a phone patch to company while maintaining a hold over den with assurances from company of no gear problems and probable no brake problems. Captain thought it prudent to have emergency equipment standing by for our landing. Landing was accomplished with no further incidents occurring. Upon arrival we were met at the gate by an FAA inspector. She made her way into the cockpit before our passenger were deplaned and interrupted normal cockpit after landing routine. This being not a normal landing situation and with our concerns for our aircraft and company procedure we had added to the situation dealing with FAA before our other duties were completed. The situation was a complicated one, a perceived possible problem with an aircraft system followed by a successful, uneventful landing. The shock of an uninvited guest in our cockpit before we even had time to unfasten our shoulder harnesses as well as complete our checklist. Even though the inspector idented herself, she was already doing so before our cockpit duties were completed. This, I feel, was a very unacceptable situation. Recommendations would be of a need for personnel to address the cockpit crew. They should do so after all cockpit duties are accomplished and all passenger have deplaned allowing full attention to answer questions or explain whatever needs to be explained.

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Original NASA ASRS Text

Title: ACR MLG HYDRAULIC PROBLEM DISCOVERED WHEN READING THE LNDG CHECKLIST. LOW HYDRAULIC PRESSURE DID NOT EFFECT ACFT OPERATION. ACR MET ACFT AT THE GATE BEFORE PASSENGERS WERE OFF THE ACFT AND DISRUPTED THE FLT CREW DOING THEIR SHUT DOWN CHECKLIST.

Narrative: UPON COMPLETING PRELIMINARY LNDG CHKLIST 'B' SYS HYD PRESSURE WAS OUT OF LIMITS. CAPT WAS FLYING. WE WENT TO ACFT MANUAL AND PROCEEDED TO TROUBLESHOOT PROB. AFTER FINDING NOTHING TO HELP US IN THE MANUAL, WE DECIDED IT WAS PRUDENT TO LOWER LNDG GEAR. THERE WAS NO CHANGE IN HYD PRESSURE, HOWEVER WHEN BRAKES WERE DEPRESSED A VIBRATION ENSUED. WE ESTABLISHED A PHONE PATCH TO COMPANY WHILE MAINTAINING A HOLD OVER DEN WITH ASSURANCES FROM COMPANY OF NO GEAR PROBS AND PROBABLE NO BRAKE PROBS. CAPT THOUGHT IT PRUDENT TO HAVE EMER EQUIP STANDING BY FOR OUR LNDG. LNDG WAS ACCOMPLISHED WITH NO FURTHER INCIDENTS OCCURRING. UPON ARR WE WERE MET AT THE GATE BY AN FAA INSPECTOR. SHE MADE HER WAY INTO THE COCKPIT BEFORE OUR PAX WERE DEPLANED AND INTERRUPTED NORMAL COCKPIT AFTER LNDG ROUTINE. THIS BEING NOT A NORMAL LNDG SITUATION AND WITH OUR CONCERNS FOR OUR ACFT AND COMPANY PROC WE HAD ADDED TO THE SITUATION DEALING WITH FAA BEFORE OUR OTHER DUTIES WERE COMPLETED. THE SITUATION WAS A COMPLICATED ONE, A PERCEIVED POSSIBLE PROB WITH AN ACFT SYS FOLLOWED BY A SUCCESSFUL, UNEVENTFUL LNDG. THE SHOCK OF AN UNINVITED GUEST IN OUR COCKPIT BEFORE WE EVEN HAD TIME TO UNFASTEN OUR SHOULDER HARNESSES AS WELL AS COMPLETE OUR CHKLIST. EVEN THOUGH THE INSPECTOR IDENTED HERSELF, SHE WAS ALREADY DOING SO BEFORE OUR COCKPIT DUTIES WERE COMPLETED. THIS, I FEEL, WAS A VERY UNACCEPTABLE SITUATION. RECOMMENDATIONS WOULD BE OF A NEED FOR PERSONNEL TO ADDRESS THE COCKPIT CREW. THEY SHOULD DO SO AFTER ALL COCKPIT DUTIES ARE ACCOMPLISHED AND ALL PAX HAVE DEPLANED ALLOWING FULL ATTN TO ANSWER QUESTIONS OR EXPLAIN WHATEVER NEEDS TO BE EXPLAINED.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.