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Hydraulic a system fluid quantity dropped while in-flight but did not drop to zero until exiting the runway after landing.
| Attributes | |
| ACN | 350567 |
| Time | |
| Date | 199610 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : stl |
| State Reference | MO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : stl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 160 flight time total : 6000 flight time type : 3000 |
| ASRS Report | 350567 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 70 flight time total : 28000 flight time type : 3000 |
| ASRS Report | 349962 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
As flaps were extended to 1, hydraulic light on recall pad flickered. Hydraulic fluid level was noted as low. System 'a' pressure remained. Occasionally the hydraulic light on recall pad would flicker. Gear and flaps were lowered normally with normal landing following. After exiting the runway (runway 30L) near our ramp, hydraulic system 'a' pressure dropped to zero. Aircraft was stopped and towed to the gate. Emergency equipment was called by the tower, but was not needed. Supplemental information from acn 349962: during the approach to stl we started to lose system 'a' hydraulics.
Original NASA ASRS Text
Title: HYD A SYS FLUID QUANTITY DROPPED WHILE INFLT BUT DID NOT DROP TO ZERO UNTIL EXITING THE RWY AFTER LNDG.
Narrative: AS FLAPS WERE EXTENDED TO 1, HYD LIGHT ON RECALL PAD FLICKERED. HYD FLUID LEVEL WAS NOTED AS LOW. SYS 'A' PRESSURE REMAINED. OCCASIONALLY THE HYD LIGHT ON RECALL PAD WOULD FLICKER. GEAR AND FLAPS WERE LOWERED NORMALLY WITH NORMAL LNDG FOLLOWING. AFTER EXITING THE RWY (RWY 30L) NEAR OUR RAMP, HYD SYS 'A' PRESSURE DROPPED TO ZERO. ACFT WAS STOPPED AND TOWED TO THE GATE. EMER EQUIP WAS CALLED BY THE TWR, BUT WAS NOT NEEDED. SUPPLEMENTAL INFO FROM ACN 349962: DURING THE APCH TO STL WE STARTED TO LOSE SYS 'A' HYDS.
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.