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.

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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.