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Mechanic is informed an EMB145LR had returned to field due to gear failed to retract. A landing gear proximity switch that mechanic had earlier reconnected was found loose.
| Attributes | |
| ACN | 793601 |
| Time | |
| Date | 200807 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude ground : takeoff roll ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 793601 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : manuals contributing factor : work cards performance deficiency : installation performance deficiency : testing performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Ambiguous |
Narrative:
I was finishing my maintenance work card 32-XXXX functional check of the landing gear proximity switches. After completing the main task; task #34 states to connect P0775 connector up to J0775 connector; which I had complied with and tightened P0775 to J0775. 2 days later; aircraft departed ZZZ airport. Upon takeoff; the gear would not retract and caused the flight to return to gate. Reconnected connectors P0775 and J0775; deplaned passenger; defueled the aircraft; it was taxied to the ron hangar for gear retraction check. No defects further noted. I felt that I had secured the 2 connections (P0775 connector and J0775 connector); but as stated; the connection was found to be loose. It would not hurt to have another mechanic (second set of eyes) to check as well.
Original NASA ASRS Text
Title: MECHANIC IS INFORMED AN EMB145LR HAD RETURNED TO FIELD DUE TO GEAR FAILED TO RETRACT. A LANDING GEAR PROXIMITY SWITCH THAT MECHANIC HAD EARLIER RECONNECTED WAS FOUND LOOSE.
Narrative: I WAS FINISHING MY MAINT WORK CARD 32-XXXX FUNCTIONAL CHK OF THE LNDG GEAR PROX SWITCHES. AFTER COMPLETING THE MAIN TASK; TASK #34 STATES TO CONNECT P0775 CONNECTOR UP TO J0775 CONNECTOR; WHICH I HAD COMPLIED WITH AND TIGHTENED P0775 TO J0775. 2 DAYS LATER; ACFT DEPARTED ZZZ ARPT. UPON TKOF; THE GEAR WOULD NOT RETRACT AND CAUSED THE FLT TO RETURN TO GATE. RECONNECTED CONNECTORS P0775 AND J0775; DEPLANED PAX; DEFUELED THE ACFT; IT WAS TAXIED TO THE RON HANGAR FOR GEAR RETRACTION CHK. NO DEFECTS FURTHER NOTED. I FELT THAT I HAD SECURED THE 2 CONNECTIONS (P0775 CONNECTOR AND J0775 CONNECTOR); BUT AS STATED; THE CONNECTION WAS FOUND TO BE LOOSE. IT WOULD NOT HURT TO HAVE ANOTHER MECH (SECOND SET OF EYES) TO CHK AS WELL.
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.