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An EMB145 had north first officer's pitch trim yoke switch inoperative. Technician believed switch was soldered to wiring. Technician ordered part no longer stocked. Switch assembly was modified to have harness with connector.
| Attributes | |
| ACN | 705781 |
| Time | |
| Date | 200608 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 705781 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : repair |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
We have a call for pitch trim switch (first officer's side) inoperative. I took the call and went to get the switch from stock. I was informed that we did not have the switch in stock and there were none in the system. Mr X came to help me. We checked for other system that may affect first officer's pitch trim problem. I was called by my supervisor to cannibalize the switch from aircraft at the hangar. I went to the hangar; print the amm page (pre mod) said note: unsolder the wires; and 4(a) (post mod) disconnect wires from the new pitch trim switch. I assumed it was just unsolder. Aircraft first officer's pitch trim switch was just solder also. Last night as I was leaving I met avionics tech. I gave him a turnover report for aircraft. He informed that there was a new pitch trim switch with harness. This morning I went to research engineering technical notes and ipc. I am now aware that there is a new part number for the switch.
Original NASA ASRS Text
Title: AN EMB145 HAD N FO'S PITCH TRIM YOKE SWITCH INOP. TECHNICIAN BELIEVED SWITCH WAS SOLDERED TO WIRING. TECHNICIAN ORDERED PART NO LONGER STOCKED. SWITCH ASSEMBLY WAS MODIFIED TO HAVE HARNESS WITH CONNECTOR.
Narrative: WE HAVE A CALL FOR PITCH TRIM SWITCH (FO'S SIDE) INOP. I TOOK THE CALL AND WENT TO GET THE SWITCH FROM STOCK. I WAS INFORMED THAT WE DID NOT HAVE THE SWITCH IN STOCK AND THERE WERE NONE IN THE SYS. MR X CAME TO HELP ME. WE CHKED FOR OTHER SYS THAT MAY AFFECT FO'S PITCH TRIM PROB. I WAS CALLED BY MY SUPVR TO CANNIBALIZE THE SWITCH FROM ACFT AT THE HANGAR. I WENT TO THE HANGAR; PRINT THE AMM PAGE (PRE MOD) SAID NOTE: UNSOLDER THE WIRES; AND 4(A) (POST MOD) DISCONNECT WIRES FROM THE NEW PITCH TRIM SWITCH. I ASSUMED IT WAS JUST UNSOLDER. ACFT FO'S PITCH TRIM SWITCH WAS JUST SOLDER ALSO. LAST NIGHT AS I WAS LEAVING I MET AVIONICS TECH. I GAVE HIM A TURNOVER RPT FOR ACFT. HE INFORMED THAT THERE WAS A NEW PITCH TRIM SWITCH WITH HARNESS. THIS MORNING I WENT TO RESEARCH ENGINEERING TECHNICAL NOTES AND IPC. I AM NOW AWARE THAT THERE IS A NEW PART NUMBER FOR THE SWITCH.
Data retrieved from NASA's ASRS site as of January 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.