Airline maintenance procedure not followed. Aircraft maintenance problem discrepancy result of overs...

Attributes
ACN	216268
Time
Date	199207
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground : preflight
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	216268
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Chart Or Publication
Air Traffic Incident	other

Narrative:

Reference log page, pilot report that captain's windshield wiper inoperative. I removed and replaced captain's windshield wiper motor. To facilitate maintenance, the captain's instrument panel needed to be removed. Installation of the instrument panel after the motor replacement was difficult due to the limitations of working space when installing indicators. Inbound pilot report in pvd indicated that captain's altimeter was inoperative. Contract maintenance in pvd determined that the captain's altimeter connection had come off, rendering altimeter inoperative. Maintenance reconnected altimeter and a was released for flight to ewr. Quality assurance releasing a for one flight back to ewr where pilot static leak check could be accomplished. I did not perform a pitot static leak check on the altimeter system after altimeter replacement. I was performing the job per medium large transport MM ch 34-12-21 page xy, which did not require a pitot static leak check after altimeter replacement. I was informed after the incident by our maintenance control that the maintenance manual had been revised. Reference medium large transport MM ch 34-12-21 page xy-a, which now requires that a pitot static leak check be done after the visual is completed. I was at fault because I was unaware that the MM had been revised to reflect this change.

Original NASA ASRS Text

Title: AIRLINE MAINT PROC NOT FOLLOWED. ACFT MAINT PROBLEM DISCREPANCY RESULT OF OVERSIGHT.

Narrative: REF LOG PAGE, PLT RPT THAT CAPT'S WINDSHIELD WIPER INOPERATIVE. I REMOVED AND REPLACED CAPT'S WINDSHIELD WIPER MOTOR. TO FACILITATE MAINT, THE CAPT'S INST PANEL NEEDED TO BE REMOVED. INSTALLATION OF THE INST PANEL AFTER THE MOTOR REPLACEMENT WAS DIFFICULT DUE TO THE LIMITATIONS OF WORKING SPACE WHEN INSTALLING INDICATORS. INBOUND PLT RPT IN PVD INDICATED THAT CAPT'S ALTIMETER WAS INOPERATIVE. CONTRACT MAINT IN PVD DETERMINED THAT THE CAPT'S ALTIMETER CONNECTION HAD COME OFF, RENDERING ALTIMETER INOPERATIVE. MAINT RECONNECTED ALTIMETER AND A WAS RELEASED FOR FLT TO EWR. QUALITY ASSURANCE RELEASING A FOR ONE FLT BACK TO EWR WHERE PLT STATIC LEAK CHK COULD BE ACCOMPLISHED. I DID NOT PERFORM A PITOT STATIC LEAK CHK ON THE ALTIMETER SYS AFTER ALTIMETER REPLACEMENT. I WAS PERFORMING THE JOB PER MLG MM CH 34-12-21 PAGE XY, WHICH DID NOT REQUIRE A PITOT STATIC LEAK CHK AFTER ALTIMETER REPLACEMENT. I WAS INFORMED AFTER THE INCIDENT BY OUR MAINT CTL THAT THE MAINT MANUAL HAD BEEN REVISED. REF MLG MM CH 34-12-21 PAGE XY-A, WHICH NOW REQUIRES THAT A PITOT STATIC LEAK CHK BE DONE AFTER THE VISUAL IS COMPLETED. I WAS AT FAULT BECAUSE I WAS UNAWARE THAT THE MM HAD BEEN REVISED TO REFLECT THIS CHANGE.

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.

Airline maintenance procedure not followed. Aircraft maintenance problem discrepancy result of oversight.