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Air carrier mdt aircraft makes a precautionary type landing procedure rollout after suffering from aircraft equipment problem of low brake pressure.
| Attributes | |
| ACN | 215685 |
| Time | |
| Date | 199207 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 220 flight time total : 16600 flight time type : 500 |
| ASRS Report | 215685 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
As we started the descent checklist for pia, I tested the brakes, per checklist, noticed right outer and inner brake pressure indicated a maximum of 1400 psi when brakes were pressed, (min is 1800 psi). I pressed brake a couple of times to see if air may have been trapped in hydraulic lines. Brakes would not pressurize into green arc. Complied with abnormal checklist for abnormal brake low pressure, isolated both brake system. Landing was normal, used full reverse on touchdown. Aircraft came to stop on centerline of 32R at ord. Passenger were deplaned and the aircraft towed to gate. Mechanics found captain's master cylinders leaking.
Original NASA ASRS Text
Title: ACR MDT ACFT MAKES A PRECAUTIONARY TYPE LNDG PROC ROLLOUT AFTER SUFFERING FROM ACFT EQUIP PROBLEM OF LOW BRAKE PRESSURE.
Narrative: AS WE STARTED THE DSCNT CHKLIST FOR PIA, I TESTED THE BRAKES, PER CHKLIST, NOTICED R OUTER AND INNER BRAKE PRESSURE INDICATED A MAX OF 1400 PSI WHEN BRAKES WERE PRESSED, (MIN IS 1800 PSI). I PRESSED BRAKE A COUPLE OF TIMES TO SEE IF AIR MAY HAVE BEEN TRAPPED IN HYD LINES. BRAKES WOULD NOT PRESSURIZE INTO GREEN ARC. COMPLIED WITH ABNORMAL CHKLIST FOR ABNORMAL BRAKE LOW PRESSURE, ISOLATED BOTH BRAKE SYS. LNDG WAS NORMAL, USED FULL REVERSE ON TOUCHDOWN. ACFT CAME TO STOP ON CTRLINE OF 32R AT ORD. PAX WERE DEPLANED AND THE ACFT TOWED TO GATE. MECHS FOUND CAPT'S MASTER CYLINDERS LEAKING.
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.