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Flight crew of a B737-200 made a go around on short final after noticing that the main hydraulic system qty read zero. Found that all system were operational but slow to respond. Landed with no problems with brakes or steering.
| Attributes | |
| ACN | 344448 |
| Time | |
| Date | 199608 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | agl bound lower : 500 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phl |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 3000 |
| ASRS Report | 344448 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During visual approach to phl runway 9R, upon extending landing gear, 'a' system hydraulic press noted zero. Landing gear and flaps extended fully, but slower than normal. Due to erratic system operation and zero hydraulic qty indication, a low approach was flown to afford time to evaluate situation. A VFR, visual approach was then flown to runway 9R with gear and flaps extended normally, all hydraulic press gauges reading normal and 'a' system hydraulic qty reading zero. No emergency was declared, and normal landing and taxi in was accomplished.
Original NASA ASRS Text
Title: FLC OF A B737-200 MADE A GAR ON SHORT FINAL AFTER NOTICING THAT THE MAIN HYD SYS QTY READ ZERO. FOUND THAT ALL SYS WERE OPERATIONAL BUT SLOW TO RESPOND. LANDED WITH NO PROBS WITH BRAKES OR STEERING.
Narrative: DURING VISUAL APCH TO PHL RWY 9R, UPON EXTENDING LNDG GEAR, 'A' SYS HYD PRESS NOTED ZERO. LNDG GEAR AND FLAPS EXTENDED FULLY, BUT SLOWER THAN NORMAL. DUE TO ERRATIC SYS OP AND ZERO HYD QTY INDICATION, A LOW APCH WAS FLOWN TO AFFORD TIME TO EVALUATE SIT. A VFR, VISUAL APCH WAS THEN FLOWN TO RWY 9R WITH GEAR AND FLAPS EXTENDED NORMALLY, ALL HYD PRESS GAUGES READING NORMAL AND 'A' SYS HYD QTY READING ZERO. NO EMER WAS DECLARED, AND NORMAL LNDG AND TAXI IN WAS ACCOMPLISHED.
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.