Narrative:

On the night of jan/mon/06; aircraft terminated at gate for line routine overnight maintenance. Upon speaking with the flight crew; the captain spoke of various items that required maintenance attention. In reference to the flight control panel; the captain mentioned that the feel differential pressure light on the flight control panel would not illuminate when pushed to test; nor would it light up with all the other lights. In the event of an actual feel differential pressure it would work. For this reason; it was decided that the panel would be changed. The panel that was removed; X; south/I 0270280; was replaced with Y; south/I 0270279; and signed off on jan/tue/06. When checking part compatibility; the aircraft tail number; the air traffic area code; and the south/I number were entered. With this information; a parts effectivity screen appeared for aircraft X air traffic area 27. The effectivity screen that appeared listed this particular part in question; south/I 0270279. Only by line selecting this particular part and then pressing enter would the special information screen appear. Had the special information criteria screen appeared before the parts effectivity screen; the incorrect part would not have been installed on aircraft X.

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Original NASA ASRS Text

Title: A B737-300 WAS DISPATCHED WITH THE INCORRECT FLT CTL PANEL INSTALLED IN THE COCKPIT OVERHEAD P-5 PANEL.

Narrative: ON THE NIGHT OF JAN/MON/06; ACFT TERMINATED AT GATE FOR LINE ROUTINE OVERNIGHT MAINT. UPON SPEAKING WITH THE FLT CREW; THE CAPT SPOKE OF VARIOUS ITEMS THAT REQUIRED MAINT ATTN. IN REF TO THE FLT CTL PANEL; THE CAPT MENTIONED THAT THE FEEL DIFFERENTIAL PRESSURE LIGHT ON THE FLT CTL PANEL WOULD NOT ILLUMINATE WHEN PUSHED TO TEST; NOR WOULD IT LIGHT UP WITH ALL THE OTHER LIGHTS. IN THE EVENT OF AN ACTUAL FEEL DIFFERENTIAL PRESSURE IT WOULD WORK. FOR THIS REASON; IT WAS DECIDED THAT THE PANEL WOULD BE CHANGED. THE PANEL THAT WAS REMOVED; X; S/I 0270280; WAS REPLACED WITH Y; S/I 0270279; AND SIGNED OFF ON JAN/TUE/06. WHEN CHKING PART COMPATIBILITY; THE ACFT TAIL NUMBER; THE ATA CODE; AND THE S/I NUMBER WERE ENTERED. WITH THIS INFO; A PARTS EFFECTIVITY SCREEN APPEARED FOR ACFT X ATA 27. THE EFFECTIVITY SCREEN THAT APPEARED LISTED THIS PARTICULAR PART IN QUESTION; S/I 0270279. ONLY BY LINE SELECTING THIS PARTICULAR PART AND THEN PRESSING ENTER WOULD THE SPECIAL INFO SCREEN APPEAR. HAD THE SPECIAL INFO CRITERIA SCREEN APPEARED BEFORE THE PARTS EFFECTIVITY SCREEN; THE INCORRECT PART WOULD NOT HAVE BEEN INSTALLED ON ACFT X.

Data retrieved from NASA's ASRS site as of January 2009 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.