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An MD88 PIC elects to continue the approach and landing without any advisory to ATC after the crew notes a loss of left hydraulic pressure during initial flap extension on a 10 mi final to atl, GA.
| Attributes | |
| ACN | 575648 |
| Time | |
| Date | 200303 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | agl bound lower : 0 agl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : a80.tracon tower : atl.tower |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : approach landing : roll |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 1500 flight time type : 3000 |
| ASRS Report | 575648 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : hydraulic pressure gauge |
| Resolutory Action | other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
On final approach, while selecting flaps approach (15 degrees), left hydraulic system indicated no pressure, but normal quantity. First officer accomplished abnormal checklists while I flew and talked to approach and tower. On final, cleared to land, I elected to not tell of our problem since we were cleared to land. The WX was VFR, and the loss of the left hydraulic system (if we had indeed lost it) was not a problem. Once on the ground, we recycled both the engine drive pump and the electric/xfer pump switches and normal pressure and quantity were once again indicated. Upon reaching the gate, we did inform maintenance of what had happened. Although someone may have reported this to approach control, we were within mins from landing in a very congested environment and I felt that the loss of the left hydraulic system, if indeed we had, was of no major consequence since a normal approach and landing could still be accomplished.
Original NASA ASRS Text
Title: AN MD88 PIC ELECTS TO CONTINUE THE APCH AND LNDG WITHOUT ANY ADVISORY TO ATC AFTER THE CREW NOTES A LOSS OF L HYD PRESSURE DURING INITIAL FLAP EXTENSION ON A 10 MI FINAL TO ATL, GA.
Narrative: ON FINAL APCH, WHILE SELECTING FLAPS APCH (15 DEGS), L HYD SYS INDICATED NO PRESSURE, BUT NORMAL QUANTITY. FO ACCOMPLISHED ABNORMAL CHKLISTS WHILE I FLEW AND TALKED TO APCH AND TWR. ON FINAL, CLRED TO LAND, I ELECTED TO NOT TELL OF OUR PROB SINCE WE WERE CLRED TO LAND. THE WX WAS VFR, AND THE LOSS OF THE L HYD SYS (IF WE HAD INDEED LOST IT) WAS NOT A PROB. ONCE ON THE GND, WE RECYCLED BOTH THE ENG DRIVE PUMP AND THE ELECTRIC/XFER PUMP SWITCHES AND NORMAL PRESSURE AND QUANTITY WERE ONCE AGAIN INDICATED. UPON REACHING THE GATE, WE DID INFORM MAINT OF WHAT HAD HAPPENED. ALTHOUGH SOMEONE MAY HAVE RPTED THIS TO APCH CTL, WE WERE WITHIN MINS FROM LNDG IN A VERY CONGESTED ENVIRONMENT AND I FELT THAT THE LOSS OF THE L HYD SYS, IF INDEED WE HAD, WAS OF NO MAJOR CONSEQUENCE SINCE A NORMAL APCH AND LNDG COULD STILL BE 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.