Mechanic reports he failed to have quality assurance (inspection); verify the standby altimeter leak...

Attributes
ACN	809740
Time
Date	200810
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Person 1
Affiliation	other
Function	maintenance : technician
ASRS Report	809740
Events
Anomaly	maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : briefing performance deficiency : testing performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I was the only one involved; it happened at airport maintenance pad across from the gate. After installing the standby altimeter and after performing the leak check and it passing the operations check and passing the leak check; quality assurance was not called to the aircraft to watch the leak check and sign as required by my airlines procedures manual. Briefly remembered that quality assurance needed to look when leak check is performed; checked our airlines manual and saw the requirement. Notified quality assurance; performed a leak check on the standby altimeter again with quality assurance there; generated a write-up; signed it and quality assurance signed it also. Simply forgot that the airlines manual requires quality assurance to look at each leak check that is performed. Unlike other airline's procedure manual it only requires quality assurance only if more than 1 pitot static system was open. It would be helpful to post the rii or quality assurance required items.

Original NASA ASRS Text

Title: MECHANIC REPORTS HE FAILED TO HAVE QUALITY ASSURANCE (INSPECTION); VERIFY THE STANDBY ALTIMETER LEAK CHECK ON AN ATR72 AIRCRAFT; AS REQUIRED BY THEIR PROCEDURES MANUAL.

Narrative: I WAS THE ONLY ONE INVOLVED; IT HAPPENED AT ARPT MAINT PAD ACROSS FROM THE GATE. AFTER INSTALLING THE STANDBY ALTIMETER AND AFTER PERFORMING THE LEAK CHK AND IT PASSING THE OPS CHK AND PASSING THE LEAK CHK; QUALITY ASSURANCE WAS NOT CALLED TO THE ACFT TO WATCH THE LEAK CHK AND SIGN AS REQUIRED BY MY AIRLINES PROCEDURES MANUAL. BRIEFLY REMEMBERED THAT QUALITY ASSURANCE NEEDED TO LOOK WHEN LEAK CHK IS PERFORMED; CHKED OUR AIRLINES MANUAL AND SAW THE REQUIREMENT. NOTIFIED QUALITY ASSURANCE; PERFORMED A LEAK CHK ON THE STANDBY ALTIMETER AGAIN WITH QUALITY ASSURANCE THERE; GENERATED A WRITE-UP; SIGNED IT AND QUALITY ASSURANCE SIGNED IT ALSO. SIMPLY FORGOT THAT THE AIRLINES MANUAL REQUIRES QUALITY ASSURANCE TO LOOK AT EACH LEAK CHK THAT IS PERFORMED. UNLIKE OTHER AIRLINE'S PROCEDURE MANUAL IT ONLY REQUIRES QUALITY ASSURANCE ONLY IF MORE THAN 1 PITOT STATIC SYS WAS OPEN. IT WOULD BE HELPFUL TO POST THE RII OR QUALITY ASSURANCE REQUIRED ITEMS.

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

Mechanic reports he failed to have quality assurance (inspection); verify the standby altimeter leak check on an ATR72 aircraft; as required by their procedures manual.