Narrative:

A dehaviland dash 8 made an unscheduled landing in salisbury, md. The aircraft had a hydraulic loss of pressure in the #2 system. After the landing the emergency crews checked the aircraft then we were allowed to take the aircraft into maintenance hangar. After inspecting the hydraulic system I found the pressure fitting on the main hydraulic pump was loose. After a closer inspection, I found the o-ring on the pressure fitting to be deteriorated to the point that it fell apart. We decided that the pump needed to be changed. However to our knowledge there was not another part available. The vice- president of maintenance told us to just change the o-ring. After looking up the correct part number (NAS 1602-) I tried to order one through the stores department. But the part number is not in the computer system. The airlines does not own this part. This was told to the vice-president of maintenance and he wanted to just find an o-ring that will fit. At this point we entered the stores department and saw a hydraulic pump sitting on the 'needs to be inspected' shelf. The pump was inspected and was installed on the aircraft. Then in accordance with the aircraft maintenance manual the hydraulic filters were inspected and changed. The hydraulic pump that was placed on the aircraft had the pressure and other fittings already installed, so the problem with the lack of equipment (parts) no longer existed. What would have happened if the airlines did not have a hydraulic pump in salisbury md? I believe that I would have been pressured into putting on an o-ring that was not the correct one, and then I would have refused to sign off the logbook. This may have caused many problems for me at work.

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Original NASA ASRS Text

Title: MECHANIC PRESSURED BY AIRLINE VICE PRESIDENT TO INSTALL ILLEGAL PART.

Narrative: A DEHAVILAND DASH 8 MADE AN UNSCHEDULED LNDG IN SALISBURY, MD. THE ACFT HAD A HYD LOSS OF PRESSURE IN THE #2 SYS. AFTER THE LNDG THE EMER CREWS CHKED THE ACFT THEN WE WERE ALLOWED TO TAKE THE ACFT INTO MAINT HANGAR. AFTER INSPECTING THE HYD SYS I FOUND THE PRESSURE FITTING ON THE MAIN HYD PUMP WAS LOOSE. AFTER A CLOSER INSPECTION, I FOUND THE O-RING ON THE PRESSURE FITTING TO BE DETERIORATED TO THE POINT THAT IT FELL APART. WE DECIDED THAT THE PUMP NEEDED TO BE CHANGED. HOWEVER TO OUR KNOWLEDGE THERE WAS NOT ANOTHER PART AVAILABLE. THE VICE- PRESIDENT OF MAINT TOLD US TO JUST CHANGE THE O-RING. AFTER LOOKING UP THE CORRECT PART NUMBER (NAS 1602-) I TRIED TO ORDER ONE THROUGH THE STORES DEPT. BUT THE PART NUMBER IS NOT IN THE COMPUTER SYS. THE AIRLINES DOES NOT OWN THIS PART. THIS WAS TOLD TO THE VICE-PRESIDENT OF MAINT AND HE WANTED TO JUST FIND AN O-RING THAT WILL FIT. AT THIS POINT WE ENTERED THE STORES DEPT AND SAW A HYD PUMP SITTING ON THE 'NEEDS TO BE INSPECTED' SHELF. THE PUMP WAS INSPECTED AND WAS INSTALLED ON THE ACFT. THEN IN ACCORDANCE WITH THE ACFT MAINT MANUAL THE HYD FILTERS WERE INSPECTED AND CHANGED. THE HYD PUMP THAT WAS PLACED ON THE ACFT HAD THE PRESSURE AND OTHER FITTINGS ALREADY INSTALLED, SO THE PROB WITH THE LACK OF EQUIP (PARTS) NO LONGER EXISTED. WHAT WOULD HAVE HAPPENED IF THE AIRLINES DID NOT HAVE A HYD PUMP IN SALISBURY MD? I BELIEVE THAT I WOULD HAVE BEEN PRESSURED INTO PUTTING ON AN O-RING THAT WAS NOT THE CORRECT ONE, AND THEN I WOULD HAVE REFUSED TO SIGN OFF THE LOGBOOK. THIS MAY HAVE CAUSED MANY PROBS FOR ME AT WORK.

Data retrieved from NASA's ASRS site as of July 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.