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A lear 35 during maintenance in aft tailcone a hydraulic fluid misting was discovered from the right engine hydraulic pump supply line.
| Attributes | |
| ACN | 510178 |
| Time | |
| Date | 200104 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : corporate |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 1 |
| ASRS Report | 510178 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | maintenance : technician |
| 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 |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
While trimming the l-hand engine fuel computer, noticed a hydraulic spray (mist) in the forward tailcone area. Found r-hand engine hydraulic return chaffed through r-hand engine supply line at the bend forward of r-hand engine fire bottle. Suspect lines were pushed together during a fire bottle change/inspection. Back-to-back adel clamps at this location would prevent this occurrence. This is an extremely unreachable area to the learjet due to the proximity to electrical/bleed air tubing and fuel with the possibility of fire.
Original NASA ASRS Text
Title: A LEAR 35 DURING MAINT IN AFT TAILCONE A HYD FLUID MISTING WAS DISCOVERED FROM THE R ENG HYD PUMP SUPPLY LINE.
Narrative: WHILE TRIMMING THE L-HAND ENG FUEL COMPUTER, NOTICED A HYD SPRAY (MIST) IN THE FORWARD TAILCONE AREA. FOUND R-HAND ENG HYD RETURN CHAFFED THROUGH R-HAND ENG SUPPLY LINE AT THE BEND FORWARD OF R-HAND ENG FIRE BOTTLE. SUSPECT LINES WERE PUSHED TOGETHER DURING A FIRE BOTTLE CHANGE/INSPECTION. BACK-TO-BACK ADEL CLAMPS AT THIS LOCATION WOULD PREVENT THIS OCCURRENCE. THIS IS AN EXTREMELY UNREACHABLE AREA TO THE LEARJET DUE TO THE PROX TO ELECTRICAL/BLEED AIR TUBING AND FUEL WITH THE POSSIBILITY OF FIRE.
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.