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A fokker captain reports 3 brake failures caused by maintenance not connecting the hydraulic pressure line to the brake assembly. After changing a tire and wheel.
| Attributes | |
| ACN | 545891 |
| Time | |
| Date | 200204 |
| Day | Tue |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 545891 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : brake temp indicator other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | MAINT. MANUAL |
Narrative:
I have experienced 3 separate events in the past 36 months involving the failure of 1 brake disc while operating an F100 aircraft following a write-up by the flight crew of an inoperative brake temperature indicator. It appears that, after maintenance has changed a tire and wheel, the hydraulic line is not connected so as to allow hydraulic pressure to that single brake system. Subsequently, the cockpit indicates no brake temperature on the system, a write-up occurs, and is signed off as a brake temperature indicator failure and the problem goes undetected.
Original NASA ASRS Text
Title: A FOKKER CAPT RPTS 3 BRAKE FAILURES CAUSED BY MAINT NOT CONNECTING THE HYD PRESSURE LINE TO THE BRAKE ASSEMBLY. AFTER CHANGING A TIRE AND WHEEL.
Narrative: I HAVE EXPERIENCED 3 SEPARATE EVENTS IN THE PAST 36 MONTHS INVOLVING THE FAILURE OF 1 BRAKE DISC WHILE OPERATING AN F100 ACFT FOLLOWING A WRITE-UP BY THE FLC OF AN INOP BRAKE TEMP INDICATOR. IT APPEARS THAT, AFTER MAINT HAS CHANGED A TIRE AND WHEEL, THE HYD LINE IS NOT CONNECTED SO AS TO ALLOW HYD PRESSURE TO THAT SINGLE BRAKE SYS. SUBSEQUENTLY, THE COCKPIT INDICATES NO BRAKE TEMP ON THE SYS, A WRITE-UP OCCURS, AND IS SIGNED OFF AS A BRAKE TEMP INDICATOR FAILURE AND THE PROB GOES UNDETECTED.
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.