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A B737-500 had a nose landing gear sensor replaced and log report cleared. Crew advised after takeoff having nose gear red and green light.
| Attributes | |
| ACN | 610016 |
| Time | |
| Date | 200402 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : takeoff ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | flight attendant : currently qualified technician : powerplant |
| ASRS Report | 610016 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 610018 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : fault isolation performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : testing |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Another mechanic and I were sent on a field trip to ZZZ on feb/sun/04, to work aircraft. The logbook write-up stated 'in cruise he had a nose gear red and green lights.' troubleshooting revealed a defective S846 gear lock sensor. The sensor was replaced per maintenance manual 32-61-41-4 with a successful operations check. The aircraft made a scheduled departure at XA15 to ZZZ1. The captain called back and said they had a nose gear red and green lights, both in the up and off position. He had cycled the gear, was sure the gear was up and locked and said he was going on to and would report it there. We called duty and advised them of the situation and they said they would handle it.
Original NASA ASRS Text
Title: A B737-500 HAD A NOSE LNDG GEAR SENSOR REPLACED AND LOG RPT CLRED. CREW ADVISED AFTER TKOF HAVING NOSE GEAR RED AND GREEN LIGHT.
Narrative: ANOTHER MECH AND I WERE SENT ON A FIELD TRIP TO ZZZ ON FEB/SUN/04, TO WORK ACFT. THE LOGBOOK WRITE-UP STATED 'IN CRUISE HE HAD A NOSE GEAR RED AND GREEN LIGHTS.' TROUBLESHOOTING REVEALED A DEFECTIVE S846 GEAR LOCK SENSOR. THE SENSOR WAS REPLACED PER MAINT MANUAL 32-61-41-4 WITH A SUCCESSFUL OPS CHK. THE ACFT MADE A SCHEDULED DEP AT XA15 TO ZZZ1. THE CAPT CALLED BACK AND SAID THEY HAD A NOSE GEAR RED AND GREEN LIGHTS, BOTH IN THE UP AND OFF POS. HE HAD CYCLED THE GEAR, WAS SURE THE GEAR WAS UP AND LOCKED AND SAID HE WAS GOING ON TO AND WOULD RPT IT THERE. WE CALLED DUTY AND ADVISED THEM OF THE SIT AND THEY SAID THEY WOULD HANDLE IT.
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.