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A B737-300 on approach descending from 9500 ft lost 'a' system hydraulics pressure and quantity. Fluid lost at 'a' system pressure module.
| Attributes | |
| ACN | 600557 |
| Time | |
| Date | 200311 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : zzz.vor |
| State Reference | US |
| Altitude | msl single value : 9500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 11400 flight time type : 530 |
| ASRS Report | 600557 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : 'a' pres + qty indication other flight crewa other flight crewb |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Loss of 'a' system hydraulic on approach to ZZZ. Performed QRH items. Declared an emergency. Briefed the cabin crew for a precautionary landing. The landing was performed without incident. We were then towed to the gate. Callback conversation with reporter revealed the following information: the reporter stated the loss of 'a' hydraulic system was caused by a massive leak on or in the 'a' system pressure module located on the forward main wheel well left side.
Original NASA ASRS Text
Title: A B737-300 ON APCH DSNDING FROM 9500 FT LOST 'A' SYS HYDS PRESSURE AND QUANTITY. FLUID LOST AT 'A' SYS PRESSURE MODULE.
Narrative: LOSS OF 'A' SYS HYD ON APCH TO ZZZ. PERFORMED QRH ITEMS. DECLARED AN EMER. BRIEFED THE CABIN CREW FOR A PRECAUTIONARY LNDG. THE LNDG WAS PERFORMED WITHOUT INCIDENT. WE WERE THEN TOWED TO THE GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE LOSS OF 'A' HYD SYS WAS CAUSED BY A MASSIVE LEAK ON OR IN THE 'A' SYS PRESSURE MODULE LOCATED ON THE FORWARD MAIN WHEEL WELL L SIDE.
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.