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A B737-300 flight crew experienced loss of a system hydraulic fluid. They declared an emergency and diverted to the nearest suitable airport.
| Attributes | |
| ACN | 733359 |
| Time | |
| Date | 200704 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 34000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 240 flight time total : 13000 flight time type : 4500 |
| ASRS Report | 733359 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 250 flight time total : 4500 flight time type : 1500 |
| ASRS Report | 733364 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : 'a' hyd quantity ind other flight crewa |
| Resolutory Action | flight crew : landed in emergency condition flight crew : diverted to another airport flight crew : declared emergency |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Hydraulic system a engine driven pump low pressure annunciated; a quantity below 1/4. Switched to B autoplt and performed 'hydraulic system a quantity or press loss' checklist which required turning off electric a pump as well due to less than 1/4 fluid. Conducted 3 way call with dispatch and maintenance; we concurred on divert to ZZZ due to proximity and WX. Maintenance concurred that we were down to 1 critical hydraulic system (standby not a second system); requiring landing at nearest suitable airport. Declared emergency; briefed flight attendants with cabin advisory; proceeded to ZZZ requesting crash fire rescue equipment equipment and a tug to tow off runway. Manually extended gear; configured early; landed runway 17R. Nosewheel steering in question; so let autobrakes 3 stop aircraft on runway (no directional inputs were needed as a result).
Original NASA ASRS Text
Title: A B737-300 FLT CREW EXPERIENCED LOSS OF A SYS HYD FLUID. THEY DECLARED AN EMERGENCY AND DIVERTED TO THE NEAREST SUITABLE AIRPORT.
Narrative: HYD SYS A ENG DRIVEN PUMP LOW PRESSURE ANNUNCIATED; A QUANTITY BELOW 1/4. SWITCHED TO B AUTOPLT AND PERFORMED 'HYD SYS A QUANTITY OR PRESS LOSS' CHKLIST WHICH REQUIRED TURNING OFF ELECTRIC A PUMP AS WELL DUE TO LESS THAN 1/4 FLUID. CONDUCTED 3 WAY CALL WITH DISPATCH AND MAINT; WE CONCURRED ON DIVERT TO ZZZ DUE TO PROX AND WX. MAINT CONCURRED THAT WE WERE DOWN TO 1 CRITICAL HYD SYS (STANDBY NOT A SECOND SYS); REQUIRING LNDG AT NEAREST SUITABLE ARPT. DECLARED EMER; BRIEFED FLT ATTENDANTS WITH CABIN ADVISORY; PROCEEDED TO ZZZ REQUESTING CFR EQUIP AND A TUG TO TOW OFF RWY. MANUALLY EXTENDED GEAR; CONFIGURED EARLY; LANDED RWY 17R. NOSEWHEEL STEERING IN QUESTION; SO LET AUTOBRAKES 3 STOP ACFT ON RWY (NO DIRECTIONAL INPUTS WERE NEEDED AS A RESULT).
Data retrieved from NASA's ASRS site as of January 2009 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.