 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An airbus A320 returns to gate due to 'B' system hydraulic quantity indication was not displayed on lower ECAM screen. Mechanic had confused the blue system hydraulic quantity canon plug with low level switch connector during deferral procedure.
| Attributes | |
| ACN | 801753 |
| Time | |
| Date | 200807 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 801753 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | other |
| 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:
Aircraft arrived at gate; while in cockpit performing oil service check crew notified mechanic of B system reservoir low level message on ECAM; and associated pump switch fault. I investigated blue system reservoir level at reservoir and found normal. I then proceeded to accomplish a deferral reservoir low level deferral for blue system. I confused the low level reservoir quantity cannon plug with the low level reservoir switch. After pushback flight crew noticed that they did not have affected reservoir quantity indication on lower ECAM screen and returned. Upon further investigation of quantity indication on lower ECAM discovered that I had disconnected the blue system hydraulic quantity indictor cannon plug instead of the blue system hydraulic quantity low level switch cannon plug.
Original NASA ASRS Text
Title: AN AIRBUS A320 RETURNS TO GATE DUE TO 'B' SYS HYD QUANTITY INDICATION WAS NOT DISPLAYED ON LOWER ECAM SCREEN. MECHANIC HAD CONFUSED THE BLUE SYS HYD QUANTITY CANON PLUG WITH LOW LEVEL SWITCH CONNECTOR DURING DEFERRAL PROCEDURE.
Narrative: ACFT ARRIVED AT GATE; WHILE IN COCKPIT PERFORMING OIL SVC CHK CREW NOTIFIED MECH OF B SYS RESERVOIR LOW LEVEL MESSAGE ON ECAM; AND ASSOCIATED PUMP SWITCH FAULT. I INVESTIGATED BLUE SYS RESERVOIR LEVEL AT RESERVOIR AND FOUND NORMAL. I THEN PROCEEDED TO ACCOMPLISH A DEFERRAL RESERVOIR LOW LEVEL DEFERRAL FOR BLUE SYS. I CONFUSED THE LOW LEVEL RESERVOIR QUANTITY CANNON PLUG WITH THE LOW LEVEL RESERVOIR SWITCH. AFTER PUSHBACK FLT CREW NOTICED THAT THEY DID NOT HAVE AFFECTED RESERVOIR QUANTITY INDICATION ON LOWER ECAM SCREEN AND RETURNED. UPON FURTHER INVESTIGATION OF QUANTITY INDICATION ON LOWER ECAM DISCOVERED THAT I HAD DISCONNECTED THE BLUE SYS HYD QUANTITY INDICTOR CANNON PLUG INSTEAD OF THE BLUE SYS HYD QUANTITY LOW LEVEL SWITCH CANNON PLUG.
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.